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    • 专利摘要:
    ENERGY MANAGEMENT SYSTEM FOR INSTALLATION OF ELEVATOR MOVED TO SOLAR ENERGY. The present invention relates to an energy management system (1) for an elevator installation (2) coupled to an alternative energy source (4) that integrates several operational modes with respect to the optimization of energy use. The power management system (1) selectively performs these modes depending on at least one predetermined parameter from a variety of parameters. The power management system (1) has a processor (22) and a switching module (24) coupled to the processor (22) to receive a control signal from the processor (22). By processing at least one of the parameters, the processor (22) selects one of a plurality of operating modes (F1-F6) from the elevator installation (2) and generates the control signal as a function of the selected operating mode for cause energy to flow through the switch module (24) from one of the inputs of the switch module (24) to the output of the switch module (24).
    公开号:BR112013020957B1
    申请号:R112013020957-7
    申请日:2012-03-07
    公开日:2020-12-22
    发明作者:Eric Rossignol
    申请人:Inventio Ag；
    IPC主号:
    专利说明:

    description
    [0001] The various types of innovation described here refer, in general, to elevator installations, in particular, to installations that are coupled to an alternative source of electrical energy, such as a photovoltaic system. More specifically, these innovation modes refer to an energy management system for such elevator installations. In addition, these modalities refer to a method for operating an elevator installation that is coupled to an alternative source of electrical energy.
    [0002] In the planning phase of a building, the building owner and the architect need to decide whether an elevator installation should be installed in the building or not. During this process, building owners and architects increasingly consider parameters such as energy consumption, whether it is eco-friendly and the overall operating costs of elevator installations. In certain countries, the reliability of the public electricity network is an additional parameter, since the lack of energy can shut down an elevator installation leaving it unavailable during a power outage.
    [0003] Several approaches that address some of these considerations are known. For example, JP 4-272073 describes a "clean" elevator system that has solar cells that charge a battery. The battery provides power to drive an elevator system motor. In addition, the battery absorbs the energy regenerated by the engine when it acts as a power generator.
    [0004] In addition, CN101544332 describes an elevator system driven by a switchable power supply. The elevator system has a commercial power supply, a power supply input identification interface, an intelligent power supply controller, a power supply output identification interface, a lift drive controller. a solar power generation device and energy storage. The solar power generation device is connected with the power supply input identification interface and the energy storage; and the energy storage is connected with the input source input identification interface and the elevator drive controller. The elevator is powered by a standby power supply provided by the solar power generating device, where the energy storage stores electrical energy to ensure that the elevator works normally in the case of a commercial power supply fails.
    [0005] Even though these approaches address some of the parameters, building owners and architects increasingly consider them as individual approaches and provide little flexibility and adaptability to various circumstances. Therefore, there is a need for an alternative approach with improved flexibility and adaptability. Therefore, the various modalities of such an alternative approach described here refer to an energy management system, in which several operational modes with respect to the optimization of energy use are integrated and selectively execute these modes. , depending on at least one predetermined parameter on a variety of parameters.
    [0006] One aspect of the invention is a power management system for an elevator installation coupled to an alternative power source, wherein the power management system includes a processor and a switching module. The processor has a first input to connect to an electrical energy storage device to obtain a parameter indicating a charge status of the electrical energy storage device, a second input to connect to the alternative energy source to obtain a parameter indicative of the available energy from the alternative energy source, a third input to connect to an electrical network to obtain a parameter indicative of a status of the energy network, and a fourth input to connect to an elevator installation controller for obtain a parameter indicative of an elevator installation operation. The switching module is coupled to the processor to receive a control signal from the processor, and has a first input to connect to the electrical energy storage device, a second input to connect to the alternative power source, a third input to connect to the electric power network. The switching module has an output for coupling a motor that drives the elevator installation to one of the electrical energy storage device, the alternative energy source and the electrical power network. The processor is configured to process at least one of the parameters to select one of a plurality of operating modes of the elevator installation and to generate the control signal as a function of the selected operating mode to cause a flow of energy from one of the inputs of the switching module to the output of the switching module.
    [0007] Another aspect of the invention is a system that includes an elevator installation that has a drive motor and an elevator controller, an alternative energy source coupled to an electrical energy storage device, and a management system of power that has a processor and a switching module attached to the processor to receive a control signal from the processor. The processor has a first input for coupling to an electrical energy storage device to obtain a parameter indicating a charge status of the electrical energy storage device, a second input for coupling to the alternative energy source to obtain a parameter indicative of the available energy from the alternative energy source, a third input to connect to a power network to obtain a parameter indicating a status of the energy network, and a fourth input to connect to a power controller elevator installation to obtain a parameter indicative of an elevator installation operation. The switching module has a first input to connect to the electrical energy storage device, a second input to connect to the alternative energy source, a third input to connect to the electricity network and an output to connect to an drive motor of the elevator installation to one of the electrical energy storage device, the alternative energy source and the electrical energy network. The processor is configured to process at least one of the parameters to select one of a plurality of operating modes of the elevator installation and to generate the control signal as a function of the selected operating mode to cause a flow of energy from one of the inputs of the switching module to the output of the switching module.
    [0008] In addition, one aspect of the invention is a method for managing energy for an elevator installation. The method processes at least one parameter of a group that comprises a parameter indicating a charge status of the electrical energy storage device, a parameter indicating the energy available from the alternative energy source, an indicative parameter vo of a status of the power grid and a parameter indicative of an operation of the elevator installation. In response to processing, the method selects one of a plurality of operating modes of the elevator installation, and generates a control signal for a switching module as a function of the selected operating mode to cause energy to flow from a from the switching module ports to another switching module port.
    [0009] In certain modalities, the above system or the energy management system may not have an input to connect to a power network. In such modality, the elevator installation is exclusively supplied with the energy from the alternative energy source or the electrical energy storage device (battery system), or both.
    [00010] An advantage is that the energy management system can detect through the parameter indicative of an elevator installation operation that a motor that drives the elevator installation is in a regenerative mode and can then control the switching module to allow power to flow from the output to one of the first input and the third input of the switching module. However, it is observed that such a regenerative mode is optional and may not be present in all modalities.
    [00011] Another advantage is that the energy management system can detect through at least the parameter indicating the available energy from the alternative energy source that an excess of alternative energy is available and can then control the power module. switching to allow power to flow from the second input to the third input of the switching module so that alternative energy is fed back into the power grid. This may also be an optional feature and may not be present in all modalities.
    [00012] An additional advantage is that the energy management system can detect through the parameter indicating an elevator installation operation that the elevator installation is in a standby mode and then can control the module. switching to supply power from one of the first input and the second input of the switching module to the elevator controller.
    [00013] In one embodiment, the system has a voltage converter coupled between the energy management system and the electrical energy storage device. The voltage converter is configured to convert a predetermined voltage supplied via a DC link to a voltage adapted to a predetermined voltage of the electrical energy storage device, and / or to convert the predetermined voltage of the electrical energy storage device. electrical power for the predetermined voltage of the DC link. Advantageously, the voltage conversion can be unidirectional or bidirectional.
    [00014] Advantageously, flexibility with regard to the type of power grid is provided by a charging device (for example, a battery charger). The charging device is coupled to the electrical energy storage device and the energy network to charge the electrical energy storage device with energy from the energy network, where the energy network is a single-phase energy network or the network of three-phase energy.
    [00015] The new features and characteristics of method steps of the invention are defined in the embodiments. However, the invention itself, as well as other characteristics and advantages of the same, is better understood as a reference for the following detailed description, when read in conjunction with the attached drawings, in which: Fig 1 schematically illustrates the interactions and functions of an energy management system as an example of an elevator installation modality in a building; Fig. 2 schematically illustrates the interactions of the energy management system with peripheral entities with respect to the status and flow of energy; Fig. 3 is a schematic overview of a system that uses solar energy during standby operation; Fig. 4 is a schematic overview of a system, based on a power network, which uses solar energy and allows regenerative energy to be fed back into a battery system; Fig. 5 is a schematic overview of the system, without a power grid, which uses solar energy and allows regenerative energy to be fed back into a battery system; Fig. 6 is a schematic overview of a system that supplies power from an alternative energy source to the power grid; Fig. 7 schematically illustrates a modality of a DC / DC converter; Fig. 8 schematically illustrates a modality of an elevator installation in a building, with a battery system and a DC / DC converter positioned on top of a building; and Figures 9a, 9b, 9c show various examples of symbols and pictograms shown on a display device.
    [00016] Fig. 1 schematically illustrates the interactions and functions of an energy management system 1 of an elevator installation 2 installed in a building 5. The energy management system 1 is coupled to an alternative power source 4 and a power network 6, for example, a 400-volt (3 x 400 V) three-phase system. Briefly, the energy management system 1 is configured to select one of several operating modes, which are defined via functions F1 - F6, as a function of several parameters (for example, status of alternative energy source 4, status of the power network 6, operational parameters of the elevator installation, day and time, and predefined routines) to operate the elevator installation 2. Therefore, the energy management system 1 allows a flexible and dynamic configuration in an operational way , which results, for example, in energy consumption and optimized general operating costs and improved availability of the elevator installation 2.
    [00017] To facilitate the illustration, the energy management system 1 is shown in Fig. 1, as well as in the following figures, as part of and coupled to the elevator installation 2. However, it can be seen that the power management system 1 is generally a part of the elevator installation 2; this can be an integral (central) part of an elevator installation control system 2, or it can be a decentralized part of the control system. In addition, certain functionality can be shared with other hardware or software components of the elevator installation 2, or can be provided by other hardware or software components, as long as the overall functionality of the power management system 1, that is, to manage the energy within the elevator 2 installation, be guaranteed.
    [00018] The example elevator installation 2 of Fig. 1 serves (for example, three) floors 10 of building 5 and includes a car 8, a control system 14, a unit that has a driving motor 12, the terminals floor 16 and a car terminal 20. At least one suspension means 18 connects the car 8 to the unit. The unit is configured to drive the suspension means 18 to move the cabin 8 up and down from a well or housing. In one embodiment, the elevator installation 1 is a traction-type elevator, that is, a drive pulley coupled to the drive motor 12 acts on the suspension medium 18 by means of traction between the drive pulley and the medium suspension 18. In such an embodiment, the suspension medium 18 serves as a suspension and traction medium.
    [00019] In one embodiment, the suspension medium 4 has a belt-type configuration in which several strings of metallic material are totally or partially embedded in an elastomeric coating. Such a configuration has a cross section that has a width that is longer than its height. The surface of such a suspension means 18 can be flat or have longitudinal grooves. In another mode of a suspension medium 18 with such a cross section, the strings of non-metallic material, such as aramid fibers, are totally or partially embedded in an elastomeric material. In yet another mode, the suspension means 18 may have a round configuration in which the strings of metallic or non-metallic material are twisted into a string. Such a round suspension medium can be uncoated or coated with an elastomeric material.
    [00020] It is noted that the order for the energy management system 1 is not limited to a specific type of elevator installation 2 or suspension means 18. For example, those skilled in the art will observe that the energy management system energy 1 described here can be used not only with a traction type elevator, with round or flat suspension medium 18, but can also be used with other types of elevators, for example, hydraulic elevators.
    [00021] In the various modalities described here, the alternative energy source 4 includes a photovoltaic system positioned on a roof 5a of building 5. The photovoltaic system has a predetermined number of solar cells. These solar cells are available for commercialization as solar panels 4a, in which each solar panel 4a is classified for a certain voltage or electrical energy. If higher electrical energy is desired, several panels can be coupled together. Solar panels are typically placed on the roof 5a of a building, but can be positioned in other locations, such as on the walls of the building or even remote to the building. It is observed that other alternative sources of energy (electric) can also be used, such as wind generators that generate electrical energy when the wind turns on its rotor.
    [00022] The number of solar panels required is chosen as a function of the requirements of the operator or architect of the building defined for the installation of elevator 2, such as a maximum number of trips per hour, the number of stops / floors and residential or co buildings - merchandises that have different usage patterns. The electrical energy generated by the solar panels is powered and stored in a battery system (battery system 26 in Fig. 2), for example, between about 24 V and 48 V, preferably 24 V or 48 V. One Battery system is an example of an electrical energy storage device. The person skilled in the art will note that other stresses are also possible. The battery system can include one or more individual batteries coupled in series so that the total voltage of the battery system is the sum of the voltages of the individual batteries. The energy management system 1 is coupled to the battery system, determines the available electrical energy, calculates the energy required for the next trip and determines whether the battery system can supply the energy required for the next trip. If the battery system energy is too low, a “solar recharge” message is displayed or the normal mode, that is, the energy from the power grid 6 is stored again.
    [00023] In addition, the number of solar panels 4a also depends on the geographic location of the building 5. It is noted that for each geographical location, the meteorological data are available or can be determined to provide, for example, the average number of sunny days per month and year and the intensity of the sun monthly. The geographic location determines, in combination with the meteorological data, the angle and orientation in which the solar panels 4a must be positioned on the ceiling 5a. The angle and orientation of solar panels 4a can track the position of the sun during the day or the year. For most installations, however, it will probably be sufficient and more economical to position solar panels 4a at an angle and in a fixed orientation and add one or more additional solar panels 4a to ensure that solar panels 4a provide sufficient energy over the course of a year.
    [00024] Fig. 2 schematically illustrates the interactions of the energy management system 1 with peripheral entities. Peripheral entities include power grid 6, drive motor 12, alternative energy source 4, elevator controller 14 and a battery 26 (or battery system). The interactions show schematically in Fig. 2 including various data exchanges with respect to the status information S1 - S5 that refer to these entities, and the routing of energy through the energy paths E1 - E5.
    [00025] The energy management system 1 includes a processor 22 and a switch / converter equipment 24 (also called a switching module). Processor 22 is coupled to switch / converter equipment 24 via a CTRL signal line to control switch / converter equipment 24. Processor 22 obtains status information S1 from elevator controller 14, status information S2 of the power grid 6, the status information S3 of the battery 26 and the capital status information S4 of the alternative energy source 4. As shown in Fig. 2, the elevator controller 14 interacts with the unit 12 to obtain the status information S5 of the unit 12. The switch / converter equipment 24 is coupled to the battery 26 via an energy path E1, to the power network 6 via an energy path E2, to the alternative energy source 4 via an energy path E4 and to unit 12 through an energy path E5. An additional energy path E3 connects the alternative energy source 4 to the battery 26.
    [00026] With reference to Fig. 1 and Fig. 2, the following functions F1 - F6 are defined and implemented by the energy management system 1. In function F1 ("in standby mode"), the generation system energy rencing 1 determines that the elevator installation 2 is in a standby mode, that is, the car 8 is not moving and waiting for a passenger to request a trip, for example, during low traffic periods or at night. The fact that information is provided via the S1 status line of elevator controller 14 as standby mode is a well-defined mode in an elevator installation. During standby, energy consumption is kept to a minimum, as energy is only used for basic functions, such as powering the electronic circuitry or lighting the landing operation panels, but not for power of unit 12.
    [00027] Additionally, the energy management system 1 obtains additional status information through the status lines S3 and / or S4 indicative of the available energy next to the battery system 26 and / or the alternative energy source 4 / solar panel 4a. If such energy is available, the energy management system 1 causes the elevator installation 2 to obtain the required energy in standby mode from battery system 26 via the energy path E1 or directly from the alternative energy source 4 through the energy path E4. During the day, for example, the alternative energy source 4 completely supplies the installation of elevator 2 in the standby mode with energy. In addition, the alternative energy source 4 charges, through the energy path E3, the battery 26 if not all the energy generated is required for the operation of the elevator installation 2.
    [00028] During the night, or during periods of low sun, the battery system 26 supplies the elevator installation 2 with energy through the energy paths E1 and E5. As discussed, the alternative energy source 4 charges battery system 26 through solar panels 4a during the day. With the battery system 26 that supplies the power, no energy from the power grid 6 is used. With a power consumption of 0 W from the power grid 6, the elevator installation 2 achieves a power consumption rating of class A, or higher A +++, in standby mode. In the conventional classification system of energy consumption of class AG (see, for example, EU Directive 2010/30 / EU) used for a variety of energy consumption devices, a class A energy consumption classification or A +++ is the highest possible rating. For example, if a power consumption of about 50 W reaches a class A rating, a power consumption of 0 W in standby mode would achieve a class A +++ rating.
    [00029] The energy management system 1 selects function F2 ("backup / emergency power") to operate the elevator installation 2 in an emergency situation. For example, in the event of a power failure from power line 6, the status information S2 from power line 6 changes to indicate such a power failure. The system processor 22 detects this change, interprets it as a power failure and activates the switch / converter equipment 24 to change the energy path from the energy path E2 to the energy path E1 or E4 to supply the drive motor 12 with power through the E5 energy path to keep elevator installation 2 running.
    [00030] In the event of a power failure, the elevator installation 2 is automatically changed to “solar mode”, which still allows the use of elevator installation 2. To further improve the availability of elevator installation 2 ( for example, over a longer period of time), its performance can be selectively reduced, for example, by turning off the (floor) indicators, reducing the light in car 8, reducing a rated speed at which car 8 moves within the well, reduce the maximum payload of the elevator installation, reduce the number of trips per hour and / or if elevator installation 2 includes a group of elevators, operate only one elevator of the group, or operate to each trip only the elevator that provides optimized energy consumption for the group. The F2 function can be applied, in particular, in countries that have frequent power interruptions.
    [00031] Availability or reduced performance is probably noticeable to passengers. To inform passengers of the reason for reduced availability or performance, an optional audio or video message, display or indicator can be provided inside the car 8 or at each landing indicating, for example, "Execution with Solar Energy", or "Battery recharge" or similar, if the accumulated energy is low. More details regarding the communication information are described below with reference to Fig. 8.
    [00032] The energy management system 1 selects function F3 ("temporary solar mode") to operate the elevator installation 2 in solar (temporary) mode, although power from the power grid 6 was available. In this solar mode, the elevator installation 2 is exclusively powered by solar energy. Solar mode is selected for the purpose of conserving electricity, for example, when traffic is low, or to reduce operating costs, for example, during periods when electricity is more expensive, or a combination of these objectives .
    [00033] The solar energy mode can be selected manually, for example, by the building operator, or automatically when traffic is low or during times when electricity is cooler. In one mode, the mode selection takes place on the elevator controller 14. Accordingly, the energy management system 1 detects any mode selection via status information S1 and changes the energy path from E2 to E1 or E4 depending on status information S3 and S4.
    [00034] When elevator installation 2 operates in solar mode, elevator controller 14 can be configured to modify the movement speed and / or acceleration of the elevator car 8. For example, the movement speed can be adapted to the load in cart 8 to optimize energy consumption. In addition, the maximum available load can be reduced when the available energy is low; the load reduction can be called “solar energy overload” and indicated as such for passengers, as described with reference to Fig. 8. This mode can be combined with energy recovery when executed in the generator, see Figures 5 and 6.
    [00035] Energy management system 1 can be applied in an elevator installation 2 that is not connected to the mains 6. In this case, energy management system 1 selects function F4 ("solar mode" permanent ") and operates the installation of elevator 2 exclusively with solar energy as the main energy source. The relative operating principle that evaluates the status information S1, S3 and S4 and the selection of the corresponding energy paths E1, E3 and E4, is as described with reference to functions F1 - F3.
    [00036] The energy management system 1 can also be implemented in an elevator installation 2 that feeds the energy generated by the solar panels back to the electrical network 6. Thus, the energy management system selects a function F5 ("solar energy back to the grid"), if it is determined that the energy consumption of the elevator installation is less than the energy actually ensured by the solar panels. The solar panels, therefore, generate a surplus of energy that can be fed back into the mains. This situation can exist, for example, when the installation of elevator 2 is not used (standby mode) or traffic is low, as indicated by the status information S1.
    [00037] The F5 function is particularly interesting, in combination with a regeneration unit that has a power factor (PF) of 1 (one unit is referred to as the PF1 energy unit), as it allows you to make the most of PF1 energy. The energy in the PF1 unit is sized for the peak regenerative energy in the installation of elevator 2 and is, in general, used in this energy only for a few minutes a day. The exploitation of this PF1 energy allows the user to have a production of solar energy at a very low cost.
    [00038] In one embodiment, the energy management system 1 can operate the elevator installation 2, according to a function F6 ("mains power"). This F6 function can be a standard mode, for example, when alternative energy source 4 is not available or is not desired. Alternative energy source 4 may not be available, for example, during repair, replacement or service. In one mode, status information S1, S3 and S4 indicate this unavailability. In another mode, the F6 function can be manually configured in the energy management system 1 to replace or ignore any status information S1, S3 and S4.
    [00039] Fig. 3 shows a schematic view of an example system that uses, according to function F1, solar energy, during the standby operation of the installation of elevator 2. In Fig. 3, the processor 22 and controller 14 are shown to be part of the energy management system coupled to a drive motor 12. It is noted, however, that it is not relevant when the "processor" or "controller" functionality is physically implemented . Power management system 1 is connected to power grid 6 and battery system 26, which is still connected to alternative power source 4. Power grid 6 is a three-phase system that provides 3 x 400 V. The battery system 26 provides a voltage of between about 24 V and about 48 V. In one mode, the battery system 26 provides a voltage of about 24 V. In another embodiment, the battery system 26 provides a voltage of about 48 V.
    [00040] As previously discussed with regard to function F1, if the energy management system 1 determines by means of controller 14 that the elevator installation 2 is in standby mode, the energy management system 1 causes that, through processor 22, the installation of the elevator 2 obtains the necessary energy from the battery system 26 through the energy path E1, as shown in Fig. 3, or directly from the alternative energy source 4 through of the E4 energy path.
    [00041] In case the alternative energy source 4 is not sufficient to charge the battery system 26, in order to provide sufficient energy for the installation of elevator 2, for example, during periods of duration or intensity limited sunlight (for example, in winter), an optional battery charger 28 can be provided. The battery charger 28 is coupled between the power supply 6 and the battery system 26. In Fig. 3, the fact that the battery system 26 is optional is indicated by dashed lines. The power consumption of the battery charger 28 can be limited to a maximum of 50 W while maintaining the Class A energy rating of the elevator 2 installation in standby mode.
    [00042] Another optional feature is a DC / DC converter (unidirectional) 30 (also shown by dashed lines in Fig. 3.) coupled via a link 32 for the DC voltage (hereinafter referred to as a DC link) ) between the energy management system 1 and the battery system 26. This feature can be applied when the installation of the elevator 2, that is, its motor unit 12 performs a regenerative trip. In this case, the DC 32 link supplies a voltage of about 560 V to the DC / DC 30 converter. The DC / DC 30 converter uses the input voltage of about 560 V to output a voltage of, for example , about 24 V to be supplied to the battery system 26.
    [00043] The different configurations of DC / DC converters are, in general, known in the technique of developing electronic circuits. They can be configured as unidirectional converters or as bidirectional converters, where a bidirectional converter can be used as a good unidirectional converter. An example of a bidirectional DC / DC converter is a split converter that allows the flow of energy from a first port (for example, inlet) to a second port (for example, outgoing) and, in the opposite, that is, from the second door to the first door. This converter uses controlled switches to store energy cyclically in coils and capacitors to smooth the DC voltage. Another modality of a DC / DC converter is described below with reference to Fig. 7.
    [00044] Fig. 4 is a schematic overview of an example system that can use energy from power supply 6 or alternative energy source 4, and allows the return of regenerative energy to the battery system 26 An electronic circuit 34, 38, which is seen here as part of the energy management system 1, is coupled to the electrical network 6, the motor unit 12 and a bidirectional DC / DC converter 30a through the DC link 32. The DC / DC converter 30a is also coupled to the battery system 26 which is coupled to the alternative power source 4. The processor or controller 22, 14 are not shown in Fig. 4, however, it is noted that these components they are still present in the installation of elevator 2 and perform their respective functions, as described above.
    [00045] As indicated in Fig. 4, in a direction from the battery system 26 to the energy management system 1, the DC / DC converter 30a converts the voltage (24 V) supplied by the battery system 26 at a voltage of about 560 V input to the power management system 1. In the opposite direction, the DC / DC converter 30a converts the voltage (560 V) supplied by the power management system with a voltage of about 24 V to be supplied to the battery system 26.
    [00046] The drive motor 12 is a component of a variable frequency drive system, which includes a controller unit / circuit (34, 38). The controller unit / circuit (34, 38) includes solid-state electronic energy conversion devices, such as bipolar isolated-port transistors (IGBT) with antiparallel diodes, in which the transistors function as switches. For illustrative purposes, the controller unit / circuit (34, 38) is in Fig. 4 as part of the power management system 1; in an alternative illustration, the controller unit / circuit (34, 38) can be part of motor unit 12. Drive motor 12 is a three-phase induction motor coupled to the controller unit / circuit, which emits a drive signal to drive motor 12. As is known in the elevator unit technique, the rotation speed of drive motor 12 depends on the frequency of the excitation signal, a change in the frequency of the The drive leads to a change in the motor rotation speed.
    [00047] The three-phase electrical network (3 x 400 V) 6 is coupled to a set of three-phase rectifier circuits 38 of the unit / controller circuit. Rectifier circuitry 38 is a full-wave diode bridge that generates for each phase a pulsed DC signal of a predetermined voltage. These DC signals carry a capacitor 40 and a DC voltage of about 560 V. The DC voltage for which capacitor 40 is charged is generally referred to as a "DC link". A set of inverter switching circuits 34 of the unit / controller circuit is coupled to the motor drive 12 and converts the DC signals to the three-phase, almost sinusoidal AC signals that drive the drive motor 12.
    [00048] In the embodiment of Fig. 4, the set of inverter switching circuits 34 includes an arrangement of three branches, one for each phase, which are connected in parallel with capacitor 40. Each branch has an arrangement in series of two switches 26, for example, isolated port bipolar transistors hereinafter referred to as IGBTs 36, each having an antiparallel diode. Between the two IGBTs in series 36 of a branch, a connection to the drive motor 12 exists. Each switch / IGBT 36 is controlled by a controller 36a phase (only two are shown in Fig. 4) that controls the switching of IGBT 36 with a predetermined frequency to generate the three-phase sinusoidal signal to drive the drive motor 12.
    [00049] Fig. 5 is a schematic overview of an example system, which is configured to use mainly energy from alternative energy source 4 to operate elevator installation 2, and which allows regenerative return energy for the battery system 26. The system includes the alternative energy source 4, the battery system 26 and the bidirectional DC / DC converter 30a which are connected and operate as described with reference to Fig. 4. The system of Fig. 5 differs from the system shown in Fig. 4 in which the energy management system 1 is not directly connected to an electrical network. Therefore, the power management system includes a circuit switching inverter 34 and capacitor 40, but not the rectifier circuit 38 shown in Fig. 4.
    [00050] Since, sometimes, the energy stored in the battery system 26 is not sufficient to operate the installation of elevator 2, the battery system 26 is coupled to an optional battery charger 28. Battery charger 28 is coupled to a 230 V one-phase mains 6a and battery system 26. Battery charger 28 operates as described in relation to Fig. 3. Note that voltage 230 it is exemplary and that the public electrical grid (power grid) of a particular country can supply a different voltage.
    [00051] Advantageously, the system shown in Fig. 5 does not require a 400 V three-phase power grid. Instead, a single 230 V phase of grid power is sufficient to power the battery charger 28 In industrialized countries, residential and commercial buildings are usually connected to the public electricity grid, which provides such a 230 V system, whereas access to a 400 V three-phase system is not usually provided, it is possible, or only at additional expense. The system in Fig. 5, however, allows the operation of the elevator installation 2, even through a 230 V one-phase power network, that is, through the battery charger 28, which charges the system battery 26, which then powers the elevator installation 2. Even though alternative energy source 4 is not available, the elevator installation 2 can be powered by the battery system 26 and the battery charger 28, again through a 230 V phase of the mains 6a.
    [00052] Furthermore, it is an advantage that the system collects energy during peak periods of consumption by the drive motor 12 from battery system 26, and not from the power grid. This is another reason why a 230 V one phase electrical grid is sufficient. Operating costs are thus further reduced since access to a 400 V three-phase electrical network must not be provided.
    [00053] Fig. 6 is a schematic overview of an example system that is configured to use energy from the alternative energy source 4 to operate the elevator installation 2, and which allows the return of the energy generated by the source alternative energy 4. The system includes alternative energy source 4, the battery system 26 and a unidirectional DC / DC converter 30b. As shown in Fig. 6, the DC / DC converter 30b converts the (24 V) voltage supplied by the battery system 26 to a voltage of about 560 V input to the power management system via a DC link 32. The power management system 1 is coupled to the power network 6 and the drive motor 12.
    [00054] The power management system 1 has an inverter switching circuit 38a, which is coupled to the supply network 6, and a set of inverter switching circuits 34a, which is coupled to the drive motor 12. The DC link circuitry 40a is coupled between the inverter switching circuitry 38a and 34a. In the illustrated embodiment, the set of link circuits CC 40 includes a parallel arrangement of two capacitors in series and two resistors in series. The operation of these circuits is as follows:
    [00055] - If the energy management system 1 operates the installation of the elevator 2 in solar energy mode (for example, functions F2, F3 and F4), the DC / DC converter 30b generates a DC voltage of about 560 V for the DC link 32, and the inverter switching circuitry 34a converts the DC voltage into a signal from the three-phase converter to drive the drive motor 12.
    [00056] - If the energy management system 1 operates the installation of the elevator 2 in solar energy back to the mains for the mode (function F5), the DC / DC converter 30b generates a DC voltage of about 560 V for link DC 32, and the inverter switching circuitry 38a converts the DC voltage to a three-phase voltage (3 x 400 V), which is fed back into the mains 6.
    [00057] - If the energy management system 1 operates the installation of the elevator 2 in the mains power mode (function F6), the inverter switching circuitry 38a acts as a rectifier circuitry ( compare the rectifier circuitry 38 in Fig. 4) which emits a DC voltage, which is then converted back to an AC voltage by the inverter switching circuitry 34, as described in relation to Fig. 4.
    [00058] The electronic circuits 34a, 38, 40a are part of an elevator installation that uses the regenerative energy generated by the drive motor 12 and feeds the energy back into the electrical network 6. Advantageously, as an elevator installation can be modified, not only to feed the regenerative energy back into the electrical grid 6, but also the energy generated by the alternative energy source 4. For example, a building owner may want to use solar energy to supply electrical energy for construction (eg for heating / cooling or elevator purposes). If a solar energy system is installed, an additional benefit in the minimum additional cost is the ability to feed the energy generated by the solar system back into the electrical grid 6 if not all the solar energy generated is used in construction.
    [00059] Fig. 7 is a more detailed schematic overview of the example system of Fig. 5, that is, a system that is configured to use mainly the energy of the alternative energy source 4 to operate the elevator installation 2, and which allows regenerative energy feedback to the battery system 26. The system includes alternative energy source 4 (in Fig. 7 shown as PV for the photovoltaic system (solar panel)), the battery system 26, the battery charger 28, bidirectional DC / DC converter 30a, link CC 32 and power management system 1. A solar panel interface 4a (in Fig. 7 shown as MPPT for the maximum power point tracker) is coupled between the alternative energy source 4 and the battery system 26. The use of the solar panel interface 4a is preferable; it can be used to optimize the energy generation efficiency of the solar panel. The solar panel interface 4a is available for commercialization; it is an electronic circuit that has a DC / DC converter that optimizes the correspondence between the alternative energy source 4 and the battery system 26 by converting the ideal DC voltage applied to the alternative energy source 4 into a DC voltage lowest needed to charge the battery system 26.
    [00060] The solar panel interface 4a is coupled to the control system 22a to receive a signal from the control system 22a indicating whether the maximum energy of the alternative energy source 4 (solar panel) should be considered or not, or if a reduced quantity, in the case of battery system 26, is already fully charged. In one embodiment, the solar panel interface 4a is integrated into the energy management system 1 to obtain an even higher degree of integration of all functions that refer to energy management; this results, for example, in an optimization in terms of space requirements and cost.
    [00061] The energy management system 1 controls the battery charger 28, the solar panel interface 4a (if present), the DC / DC converter 30a and receives the input from the link CC 32 and of the battery system 26. To facilitate the illustration, the control and unit functionalities of the energy management system 1 are illustrated as blocks identified as the control system 22a and the motor unit (inverter) 12a. The control system 22a corresponds to the function of processor 22 shown in Fig. 3, and the motor unit (inverter) 12a corresponds to the function of inverter 34, 34a shown in figures 5 and 6.
    [00062] The DC / DC converter 30a is coupled between the battery system 26 and the link DC 32, and receives the control signals from the control system 22a. These control signals control (MOSFET) the switches 31a-31d, 35a-35d of the DC / DC converter 30a according to a predetermined sequence to allow the voltage conversion. In addition, the DC / DC converter 30a includes a transformer 33b and an inductance 33a, wherein a first group of switches 31a-31d is on one side of transformer 33b and a second group of switches 35a-35d is on the other side of the transformer 33b. In each group, two subgroups of switches connected in series are connected in parallel to each other and to the terminal ports.
    [00063] The DC / DC converter 30a is configured for about 6 kW in the case of a residential elevator installation, or about 12 kW, or more, for commercial applications or medium lift installation. Briefly, as seen from battery system 26, switches 31a-31d convert the DC (low) battery voltage into an AC voltage of a predetermined frequency (for example, about 100 kHz). Transformer 33b transforms the AC voltage into a higher AC voltage of the same predetermined frequency. The MOSFET switches used in the DC / DC converter 30a allow faster switching than, for example, IGBT switches, so that the size of transformer 33b is smaller than at lower frequencies. Switches 35a-35d convert the AC voltage to a DC voltage (for example, 560 V) that charges capacitor 40 from DC link 32. In addition, transformer 33b completely isolates the DC voltages on each side of transformer 33b one the other.
    [00064] The control system 22a measures the DC voltages on both sides of the DC / DC converter 30a and controls the MOS-FET switches accordingly to transfer the correct amount of energy. Therefore, the voltage of the DC link 32 is maintained at the nominal value.
    [00065] The battery charger 28 includes a rectifier 28a that converts the AC voltage from the power grid 6 into a DC voltage that charges two capacitors connected in a serial way 28b. The two switches connected in serial mode 28c (semiconductor switches) are connected in parallel to the capacitors connected in serial mode 28b. One terminal of an inductor 28d is connected to a line connecting the switches 28c, and the other terminal is connected to the battery system 28 and the solar panel interface 4a. A control line 4a is connected to a line connecting the two capacitors 28b and to the solar panel interface 4a.
    [00066] In addition, battery charger 28 is designed to charge several individual batteries connected in series. During this process, the battery charger 28 controls a balance of the battery charge, as at a given moment, not all batteries can have the same charge status. In such a case, the battery charger 28 interrupts the charging current of a battery that has a higher charge status than the others.
    [00067] In one embodiment, the battery system 26 is coupled to the elevator controller 14 so that the elevator controller 14 is powered by the battery system 26. In that embodiment, a connection to a 230 V power grid is no longer required.
    [00068] Fig. 8 schematically illustrates a modality of an elevator installation 2 in a building 5, in which the battery system 26 and the DC / DC converter 30 (30a, 30b) are positioned on the roof 5a of the building 5. However, it is observed that in another modality, only one of the battery system 26 and the DC / DC converter 30 (30a, 30b) can be positioned on the ceiling 5a. In one embodiment, the battery system 26 or the DC / DC converter 30 (30a, 30b), or both, are positioned close by, for example, below the solar panels. Then, the solar panel serves as a cover or protection to protect components from weather or environmental conditions. If additional or better protection against such conditions is desired, a separate structure (enclosure or box) located close to the solar panel on the roof 5a can be provided to house the battery system 26 and / or the DC / DC converter 30 ( 30a, 30b).
    [00069] It is observed that the concept of positioning the battery system or the DC / DC converter 30 (30a, 30b) or both on the roof 5a can be applied to all systems that use solar panels for power elevator facilities. Such systems may or may not use an energy management system as described in the present invention.
    [00070] Advantageously, the battery system 26 or the DC / DC converter 30 (30a, 30b) or both need not be positioned inside building 5, for example, in the elevator shaft. No space within building 5 needs to be reserved for battery system 26 or the DC / DC converter 30 (30a, 30b). This provides, for example, more flexibility when developing elevator installation 2 for a specific building 5, as the space requirements of the battery system 26 and / or the DC / DC converter 30 (30a, 30b) do not need to be considered. Depending on a specific configuration of the elevator 2 installation (for example, the power requirement, the number of stops / floors, residential or commercial building, etc.), the battery system 26 or the DC / DC converter 30 (30a, 30b) can be relatively large, but the roof 5a, in general, has enough space to place the entire size of the battery system 26 and / or the DC / DC converter 30 (30a, 30b) close to the solar panels.
    [00071] In addition, positioning the battery system 26 and / or the DC / DC converter 30 (30a, 30b) close to the alternative energy source 4 (solar panel) minimizes the length of the transmission path (ie ie, the cable length) between the solar panel and the battery system 26, and between the battery system 26 and the DC / DC converter 30 (30a, 30b). The loss of energy is therefore reduced.
    [00072] Elevator installation 2 can be configured to communicate information referring to a general or current operating mode, or elevator installation parameters 2 to an operator or building owner, service elevator and personnel maintenance staff, builders or visitors, or elevator users / passengers, or a combination of these groups. For example, some operators or building owners may want to convey a "green" or environmental image by communicating that the elevator installation 2 is powered by solar energy, for example, in general or only temporarily. The effect of using solar energy in reducing the CO2 area in the user's elevator can also be reported.
    [00073] Communicating the operational mode or parameters can occur, for example, through illuminated indicators on / off, monitors or displays (video). With reference to Figures 1 and 8, the elevator installation 2 already has floor 16 and car 20 terminals. In addition to their conventional functions, these terminals 16, 20 can be configured to communicate the operating mode or parameters. In an alternative mode, indicators, monitors or displays separate from these terminals 16, 20 can be supplied, for example, on all floors or only selected (for example, at the entrance) and / or inside cars 8. Fig. 8 shows a mode that has the display devices 42 separated from the terminals 16, 20, one being provided inside the cart 8 and on one of the floors 10. However, it is observed that the display devices 42 can be provided at other locations within the elevator facility 2 or building 5 as well.
    [00074] Monitors or displays (video), or a part of terminals 16, 20, or as separate components, such as display devices 42, are advantageous because they provide more options for communicating information with in relation to the mode of operation, for example, graphics, the multi-level menus, in combination with multimedia content, the weather information, etc. Examples of such information are: the remaining energy in the battery system 26, for example, expressed as number of trips, actual percentage of power delivered by the solar panel 4, the actual power generated by the solar panel (for example, the radiation level), the real power (regenerative) generated by the motor unit 13, the "solar energy overload" and / or thinking about why, for example, the elevator speed is lower or the car light is decreased .
    [00075] Figures 9a, 9b and 9c show several examples of symbols and pictograms shown on a display device 42. In Fig. 9a, with a stylized sun as the background, three pictograms 44, 46 and 48 are shown , each represents a parameter of the elevator installation 2 or the alternative energy source 4. Pictogram 44 represents a current lighting in percentage of the solar panel, for example, 99%. Pictogram 46 represents a number of trips, for example, 40, which are possible with the energy stored in the battery system 26. Pictogram 48 represents a percentage of use of solar energy to use the electricity grid in percentage, for example , solar energy supplies 80% of the energy and the 20% energy network.
    [00076] As described above, the energy management system 1 can operate the elevator installation in temporary or permanent solar mode (F3, F4). In these modes, a pictogram as shown in Fig. 9b can be displayed to indicate that elevator installation 2 is being performed using solar energy only. The pictogram shown in Fig. 9c can be displayed to indicate that elevator installation 2 is operating in a hybrid mode.
    [00077] It is noted that the more or less pictograms, or different ones, can be shown on the display device 42. In addition, in addition or as an alternative to these symbols, the alphanumeric text can also be displayed.
    [00078] It is evident that an energy management system was presented for an elevator installation that completely satisfies the objectives, means and advantages defined here. For example, the power management system integrates several operating modes and selectively executes these modes depending on the predetermined parameters. The energy management system provides the enhanced flexibility that allows the operation and use of the elevator installation under a variety of different environmental and economic conditions. For example, this allows an elevator installation installer to use the energy management system in each elevator installation in a given segment (for example, homes, medium elevation), regardless of a specific country or its climatic conditions. In a country with a high number of sunny days (for example, in India), the energy management system can operate an elevator installation, for example, in permanent solar energy mode, with or without access to the electric grid and with or without feedback of generated energy (solar or regenerative). On the other hand, in northern European countries, the energy management system can operate an elevator installation using solar energy only during waiting times. It is observed that the energy management system is "intelligent", that is, it is programmed to select a suitable mode in view of the various status information described above.
    权利要求:
    Claims (13)
    [0001]
    1. Energy management system (1) for an elevator installation (2) coupled to an alternative energy source (4), characterized by the fact that it comprises: a processor (22) that has a first input to couple to an electrical energy storage device (26) to obtain a parameter indicating a charge status of the electrical energy storage device (26), a second input for coupling to the alternative energy source (4) to obtain a parameter indicating the energy available from the alternative energy source (4), a third input for coupling to an electrical power network (6) to obtain a parameter indicating a status of the power network (6 ), and a fourth input for coupling to a controller (14) of the elevator installation (2) to obtain a parameter indicating an operation of the elevator installation (2), and a switching module (24) coupled to the processor (22 ) to receive a control signal from the processor (22), the switching module (24) having a first port for attaching to the electrical energy storage device (26), a second port for attaching to the alternative power source (4), a third port for attaching to the electrical power network (6) and a fourth door for coupling a drive motor (12) of the elevator installation (2) to one of the electrical energy storage device (26), the alternative energy source (4) and of the electric power network (6), the processor (22) being configured to process at least one of the parameters to select one of a plurality of operational modes (F1-F6) of the elevator installation (2) and pa - to generate the control signal as a function of the selected operating mode to cause energy to flow from one of the ports of the switch module (24) to another port of the switch module (24).
    [0002]
    2. Energy management system (1), according to claim 1, characterized by the fact that the processor (22) is further configured to detect through the parameter indicative of an elevator installation operation (2), that a drive motor (12) of the elevator installation (2) is in a regenerative mode, and to control the switch module (24) to allow power to flow from the fourth door to one of the first door and the third port of the switching module (24).
    [0003]
    3. Energy management system (1), according to claim 1 or 2, characterized by the fact that the processor (22) is further configured to detect through at least the parameter indicative of the available energy from the alternative energy source (4) that an excess of alternative energy is available, and to control the switching module (24) to allow power to flow from the second port to the third port of the switching module (24 ) so that alternative energy is fed back into the power grid (6).
    [0004]
    4. Energy management system (1), according to any one of the previous claims, characterized by the fact that the processor (22) is further configured to detect through the parameter indicative of an elevator installation operation (2), that the elevator installation (2) is in a standby mode, and to control the switch module (24) to supply power from one of the first port and the second port of the switch module (24) to the controller elevator (14).
    [0005]
    5. System, which comprises: an elevator installation (2) that has a drive motor (12) and an elevator controller (14); an alternative energy source (4) coupled to an electrical energy storage device (26); and a power management system (1), characterized by the fact that the power management system (1) comprises a processor (22) and a switching module (24) coupled to the processor (22) to receive a control signal from the processor (22); the processor (22) having a first input for coupling to an electrical energy storage device (26) to obtain a parameter indicating a charge status of the electrical energy storage device (26), a second en - connection for coupling to the alternative energy source (4) to obtain a parameter indicating the available energy from the alternative energy source (4), a third input for coupling to an electrical power network (6) for obtain a parameter indicating an energy network status (6), and a fourth input to connect to a controller (14) of the elevator installation (2) to obtain a parameter indicative of an operation of the elevator installation (2 ), with the switching module (24) having a first port to connect to the electrical energy storage device (26), a second port to connect to the alternative energy source (4), a third port to connect to the electric power network (6) and a fourth door for coupling a drive motor (12) of the elevator installation (2) to one of the electrical energy storage device (26), the alternative energy source (4) and the electrical power network (6 ), and since the processor (22) is configured to process at least one of the parameters to select one of a plurality of operational modes (F1-F6) of the elevator installation (2) and to generate the control as a function of the selected operating mode to cause energy to flow from one of the ports of the switch module (24) to another port of the switch module (24).
    [0006]
    6. System, according to claim 5, characterized by the fact that it also comprises a voltage converter (30, 30a) coupled between the energy management system (1) and the electrical energy storage device (26 ), and the voltage converter (30, 30a) is configured to convert a predetermined voltage supplied via a DC link (32) to a voltage adapted to a predetermined voltage of the electrical energy storage device (26), and / or to convert the predetermined voltage of the electrical energy storage device (26) to the predetermined voltage of the DC link (32).
    [0007]
    7. System, according to claim 5 or 6, characterized by the fact that it also comprises a charging device (28) coupled to the electric energy storage device (26) and the power network (6, 6a) to charge the electrical energy storage device (26) with power from the power network (6a, 6a), since the power network is a single-phase power network (6a) or a three-phase power network (6) .
    [0008]
    8. System according to claim 6, characterized by the fact that the alternative energy source (4), the voltage converter (30, 30a) and the electrical energy storage device (26) are positioned in a roof (5a) of a building (5).
    [0009]
    9. System according to claim 8, characterized by the fact that the voltage converter (30, 30a) and the electrical energy storage device (26) are positioned close to the alternative energy source (4).
    [0010]
    10. Energy management method for an elevator installation (2), comprising: processing at least one parameter of a group comprising a parameter indicating a charge status of an electrical energy storage device (26 ), a parameter indicating the energy available from an alternative energy source (4), a parameter indicating a power network status (6), and a parameter indicating an elevator installation operation (2 ), characterized by the fact that the processing is performed by a processor (22) that has a first input to connect to the electrical energy storage device (26), a second input to connect to the alternative energy source (4) , a third input to connect to the power grid (6), and a fourth input to connect to a controller (14) of the elevator installation (2) to obtain the parameter indicating the operation of the elevator installation (2) ; selecting in response to processing one of a plurality of operating modes (F1-F6) of the elevator installation (2); and generate a control signal for a switching module (24) as a function of the selected operating mode, with the switching module (24) having a first port for coupling to the electrical energy storage device (26), a second door for coupling to the alternative energy source (4), a third door for coupling to the power grid (6), and a fourth door for coupling to a drive motor (12) of the elevator installation (2) to a the electrical energy storage device (26), the alternative energy source (4) and the electrical energy network (6), and the control signal causes energy to flow from one of the module ports switching port (24) to another port of the switching module (24).
    [0011]
    11. Method, according to claim 10, characterized by the fact that it also comprises detecting through the parameter indicative of an elevator installation operation (2) that a drive motor (12) of the elevator installation ( 2) is in a regenerative mode, and control the switch module (24) to allow energy to flow from the fourth port to one of the first port and the third port of the switch module (24).
    [0012]
    12. Method, according to claim 10 or 11, characterized by the fact that it also comprises detecting through at least one parameter indicative of available energy from the alternative energy source (4) that an excess of alternative energy is available, and control the switch module (24) to allow power to flow from the second port to the third port of the switch module (24) so that alternative energy is fed back into the power grid (6).
    [0013]
    13. Method according to any of claims 10 to 12, characterized by the fact that it also comprises detecting through the parameter indicative of an operation of the elevator installation (2) that the elevator installation (2) is in a standby mode, and control the switch module (24) to supply power from one of the first port and the second port of the switch module (24) to the elevator controller (14).
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    同族专利:
    公开号 | 公开日
    IL227223A|2017-01-31|
    PT2686263E|2015-09-21|
    WO2012126728A1|2012-09-27|
    EP2686263A1|2014-01-22|
    CN106026363B|2019-06-21|
    MX2013010534A|2014-08-01|
    CO6811820A2|2013-12-16|
    AU2012230560B2|2017-05-18|
    US9440819B2|2016-09-13|
    PL2686263T3|2015-10-30|
    SG192570A1|2013-09-30|
    CN103582604A|2014-02-12|
    AU2012230560A1|2013-09-12|
    BR112013020957A2|2016-10-11|
    CN106026363A|2016-10-12|
    US20140008155A1|2014-01-09|
    EP2686263B1|2015-05-06|
    ES2544540T3|2015-09-01|
    EP2500309A1|2012-09-19|
    MX339368B|2016-05-20|
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    法律状态:
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-08-13| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-10-06| B09A| Decision: intention to grant|
    2020-12-22| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/03/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP11158872A|EP2500309A1|2011-03-18|2011-03-18|Energy management system for solar-powered elevator installation|
    EP11158872.9|2011-03-18|
    PCT/EP2012/053858|WO2012126728A1|2011-03-18|2012-03-07|Energy management system for solar-powered elevator installation|
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