• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SUMMARY The invention relates to a method and a device for power supply of a lift of the type in which a drive machinery (109) is supported by a load carrier (107) and the intermediate interaction between gears (111) and rack (112) can drive the load carrier in a first and second direction. along a path along a substantially vertical mast (110). In order to reduce the external power demand and thereby reduce the costs of the elevator power supply system as a whole, it is proposed according to the procedure; arranging a load carrier (107); that the load carrier (107) is arranged to carry an electric operating motor (109) included in the drive machinery, which electric motor is selected so that in regenerative operation it generates an energy flow, that the electric motor (109) is arranged so that it can drive the load carrier (107) in the first direction along the path reverse regenerative operation can drive the load carrier to generate an energy flow during braking and moving in the other direction down the track, that the load carrier (107) is arranged to support an energy storage system (10) comprising an energy storage (60) designed to store, receive and deliver electrical energy. that the load carrier (107) is equipped with a first current transmitting bus (11) allowing the energy flow emitted from the electric motor (109) during braking and regenerative operation to be transferred from the electric motor to the energy storage (60) included in the energy storage system (10) and, if necessary, reverse from the energy storage to the drive motor , and that the load carrier (107) is assigned to increase its positional energy during acceleration or roar upward along the mast by the action of energy taken from the energy storage (60). W: Other_Casedocuments Patent P409- P40904575SEOO 100223 besk.doc
    公开号:SE1050183A1
    申请号:SE1050183
    申请日:2010-02-26
    公开日:2011-08-27
    发明作者:Lars Cederblad；Jonny Eliasson
    申请人:Alimak Hek Ab；
    IPC主号:
    专利说明:

    15 20 25 30 35 2 the electric power cable is given an adapted length to be able to follow the elevator car all the way up along the mast. In conclusion, it can be mentioned that rack-and-pinion lifts are usually intended to be used for non-permanent use in the construction industry, ie. when a structure is erected, the elevator is dismantled.
    However, the lifts are getting higher and it has been shown that at lift heights up to 500 m and higher, the weight of the electric power cable becomes so significant that it affects the lift's load capacity. The fact that the electric power cable is extended as the elevator car moves along the mast also means difficulties in accommodating the entire length of the power cable, especially when the power cable is to supply high-power electric motors with the required current. When it comes to elevators that are intended to move between the floors of very tall buildings, the length, rigidity and dead weight of the electric power cable are both problems, whereby the relatively coarse electric power cable that comes with the elevator car becomes difficult to control, heavy to carry and shelter.
    It should be understood that the limited ability of the rack-and-pinion elevator to balance the positional energy of the elevator car due to its lack of counterweight leads to the need for very powerful electric motors and associated electrical equipment such as electric cables with relatively large cross-sectional area to deliver required current motors. during the start moment or the so-called the acceleration phase.
    When the elevator car is driven to a certain level up the mast, its positional energy increases following formula; (Ep ° t = mgh; where m = mass, h = lift height and g = weight acceleration). In the absence of a counterweight, the positional energy of an elevator car which is lifted to a certain height has increased substantially, whereby significant amounts of energy have been supplied to the elevator via the power supply system. It should be understood that in the elevated position of the elevator car, the supplied energy collected in the elevator car is present as positional energy.
    In addition to the mentioned high lift heights, it is of course also a problem that power, power supply systems must be dimensioned based on the highest most critical power the lift motors only periodically drive the lift with full because the lift is normally only required during certain short periods of operation, especially at the start but also during that the elevator moves upwards along the mast. However, the greatest momentary force is needed at the starting moment, ie. during the initial part of the driving cycle when the elevator car is accelerated. When the elevator car has reached a constant speed, the power requirement decreases significantly. In conventional counterbalanced elevators, changes in the positional energy (potential energy) of the elevator car during movements are balanced by means of a counterweight. Rack-mounted lifts usually lack this possibility, but the position energy must always be overcome by the power supply system, which of course places significant demands on this. Large amounts of energy are generated when a rack-and-pinion lift basket during braking (deceleration) moves downwards along the mast. The position energy which then departs from the elevator car is usually converted into heat energy in separate resistors (brake resistors) or fed back into the power grid by so-called regenerative W: Other_Casedocuments Patent P409- P40904575SEOO 100223 besk.doc 10 15 20 25 30 35 3 braking. It should be understood that when compared to conventional counterbalanced elevators, a rack-and-pinion elevator produces significantly more energy when moving downward due to the lack of counterweight. Previous attempts to equip rack-and-pinion lifts with a counterweight have been less successful, mainly due to complicated constructions and the extra work that the counterweight arrangement entails during assembly and disassembly work with the lift.
    Since the power supply system and associated electrical installations must be dimensioned to withstand the highest output required for short periods, while a standard load exerted significantly less demands on the power plant's capacity, overload protection, line systems and other equipment in the consumer circuit will not be fully utilized. capacity. As part of this, the investment cost for the power supply systems will be significant and more extensive than necessary and, from a cost point of view, inefficient.
    Since rack-and-pinion lifts are not infrequently used in the construction of buildings in places that lack electricity and infrastructure of power plants using alternative power sources as main power generators such as diesel generators, it should be understood that it would be desirable to reduce both size and cost of required external power generation. equipment and genset.
    Fig. 1 shows how a general power grid 101 included in a main power generator 100 supplies a three-phase alternating current to a transformer 102 for down-transformation to a suitable voltage level. An AC bus 105 and a three-phase electric power cable 106 which supply a three-phase electric motor 109 supported by an elevator car 107 with electrical energy. As best seen in Fig. 1a, the elevator car 107 is rack-mounted and drivable along a mast 110 by cooperation between a gear 111 driven by the electric motor 109 and a rack 112 arranged on the mast. The selected speed when raising and lowering the elevator car 107 is controlled by appropriate frequency adjustment of the electric motor 109. When the elevator car 107 moves downwards along the mast 110 during braking, a reverse or opposite AC alternating current flow is generated in the electric motor 109.
    The opposite AC current flow can through so-called generator braking is led back to the power grid 101 (not shown).
    Fig. 2 shows an example in which the main power generator 100 includes a diesel generator 113 intended for use as a power source. The diesel unit 113 is mechanically connected to an AC power generator 114. The power generator 114 emits an AC alternating current which via an AC bus 105 and three-phase electric power cable 106 (see Fig. 1) supplies the electric motor 109 of the car body 107. From this point the system is the same as the as described in Fig. 1. As the elevator car 107 moves downward along the mast, a reverse or reverse AC alternating current is generated in the motor. The reverse AC current flow can be generated by generating braking to dissipate as heat in a braking resistor or alternatively led back to the power grid 101 (not shown).
    A first object of the present invention is, on the basis of prior art, to provide a method for powering rack-and-pinion lifts which makes it possible to reduce the external power demand and thereby reduce the costs of the elevator's power supply system as a whole. A second object is to provide a method of power supply which solves the problems of the three-phase electric power cable extending from the ground level unit to the elevator car. A third object of the invention is to provide an apparatus for carrying out said methods.
    These objects of the invention are achieved by a method having the features and features set forth in claim 1 and an apparatus having the features and features set forth in claim 10. In the following an embodiment of the invention will be described in more detail with reference to the accompanying drawings. on which; Fig. 1 schematically shows a block diagram of a known power supply system connected to a public power grid for a rack-and-pinion lift which can be run along a mast; Fig. 1a shows a front view and in more detail the drive unit included in a rack-and-pinion elevator of the type shown in Fig. 1, Fig. 2 schematically shows a block diagram of the power supply system according to Fig. 1 but in an embodiment with a diesel engine driven generator set, a so-called genset; Fig. 3 schematically shows a block diagram of a device according to the invention which for power supply of a rack-and-pinion lift has an energy storage system which comprises a supercapacitor and which system is connected to a general power grid supplying an AC alternating voltage; Fig. 3a schematically shows a block diagram of the supercapacitor shown in Fig. 3 and associated electrical circuits in more detail.
    Fig. 3b schematically shows in a cross-sectional view a charging device included in the invention in an alternative embodiment, including a pantograph trolley with pantograph and with which device a power receiver arranged on the elevator car can be continuously electrically connected to the main power grid.
    Fig. 4 schematically shows a block diagram of a device for supplying power to a rack-and-pinion lift according to Fig. 3 but in an embodiment with an energy storage system which includes a flywheel; Fig. 5 schematically shows a block diagram of a device according to Fig. 3, but with an energy storage system including a battery pack; Fig. 5a schematically shows a block diagram of the battery pack shown in Fig. 4 with associated electrical circuits in more detail.
    Fig. 6 shows schematically in the form of a graph the energy requirement of a known rack-and-pinion lift in different stages A-F of a driving cycle; and Fig: 7 schematically shows in the form of a graph corresponding to Fig. 6 the energy requirement when using a power supply device according to the present invention. ; Referring to Figures 3-5, an elevator system with a rack-and-pinion elevator for transporting passengers or goods is shown. The elevator comprises a load carrier in the form of an elevator car 107 which by means of a drive unit, comprising an electric motor 109 and a transmission with a rotatable shaft including a gear 111, is drivable along a path in the form of a mast 110 provided with a rack 112 (see fig. 1a). Said electric motor 109 is of the three-phase type, for example with the rated voltage 380-500 V and the frequency 50 or 60 Hz. Figs. 3-5 show the present power supply device incorporated as part of the two per se known embodiments shown in Figs. 1 and 2 and to which reference is also made.
    The present power supply device includes a power storage system generally designated 10, supported by the elevator car 107 designed to receive energy, store energy and via a first bus, a DC bus 11 supply stored energy to the electric motor 109 of the elevator car 107.
    The DC bus 11 has a positive side 13 and a negative side 14. A power-generating main power network 100 supplies a three-phase AC alternating voltage. The said power network 100 may consist of a general electric power network, or alternatively a genset comprising a diesel unit with associated power generator of the type shown in fig. 1 and 2. The energy storage system 10 supported by the elevator car 107 is designed to store energy of the kind generated during regenerative operation of the electric motor 109 of the elevator car, i.e. energy which is emitted when the car body 107 is retarded during downward movement along the mast 110. Furthermore, the energy storage system 10 is designed to store energy taken directly from the main power grid 100, either when the car body 107 is at a basic level or at a specific location along the carriage path 107 along the mast 110. A second bus extends from a ground level, an AC bus 20 including a three-phase electric power cable from the main power grid 100 and further vertically upwards along the mast 110. The three-phase electric power cable serving as the AC bus 20 is so attached and supported on the mast 110 that can be considered as stationary in relation to the elevator car 107. The term "AC bus", DC bus or just "bus" in the following generally refers to a system of wires, busbars or similar current-transmitting arrangements as common connects several electrical devices.
    By 24 is generally meant a power transmission means allowing electrical energy to 100 and the energy storage system 10. That the power transmission means 24 can be designed in a number of different ways is transmitted between the main power grid supported by the elevator car 107 will appear below. As a result, the power transmission means 24 has been divided into a number of charging stations 24: 1-24 located at a suitable mutual distance from each other along the mast 110. Each charging station includes a charging device 25 which via a branch line 26 and said AC bus 20 is in electrical connection with the main power grid 100.
    The charging device 25 comprises a power transmitter 30 carried by the mast 110: designed to cooperate with a power receiver 31 arranged on the elevator car 107 in order to Inlet contact portions 32 allow electrical energy to be transmitted from the main power grid 100 to the energy storage system 10 when the elevator car 107 is in such a position along its path as illustrated by the arrows 17, from along the mast 110 that the contact portions 32 are in current transmitting communication with each other.
    To act as a charger, the charging device 25 comprises a DC converter 35 supported by the car body 107 for converting the AC current of the main power grid to a DC direct current which can be transferred as a charging current to the energy storage 10. As can be seen from the drawing figures, the cooperating contact portions 32 are supported by the mast 110 107. In Fig. 3b, the power transmitter 30 and power receiver 31 of the power transmission means 24 are shown in an alternative embodiment, shown in cross section through the mast. In the embodiment shown, the above-described charging stations 24: 1-24 and the AC bus 20 have been replaced by a rail track 50 with electrically conductive busbars extending along the mast 110. Current supply takes place by means of a pantograph trolley 51 with associated pantographs and as an accompanying elevator car 107 runs on insulating guides along the rail track 50. The pantograph carriage 51 runs on and is mounted via wheels 52 on a guide rail 53 attached along the mast in the form of a T-beam.
    There are four pantographs here, of which 55a, 55b, 55c constitute three-phase supply and 55d earth connection. This embodiment has the advantage that the power receiver 31 of the elevator car 107 can in an selectable place along its path be placed in electrical connection with the main power network 100 via the contact points 32, i.e. charging can take place anywhere along the mast regardless of the level of the car body. Disconnection and disconnection suitably takes place by means of a switch 55 of the three-phase contactor type arranged at the location and in the manner indicated by the dotted line in FIG. 4.
    Thus, when the elevator car 1 moves upwards along the mast 110 by the action of the drive unit and the AC carried by the elevator car 1, the electric motor is driven primarily by energy stored in the energy storage system 10. During the upward movement of the elevator car 107 along the mast 110, the elevator car thus increases position energy through energy retrieved from the energy storage system 10. In the event that the energy stored in the energy storage system 10 would not be sufficient to drive the elevator car 107 up to a certain level on the mast 110, additional or supplementary energy may be retrieved from the main power grid 100.
    According to the invention, energy is obtained from the main power grid 100 by temporarily stopping the elevator car 107 in connection with one of the charging stations 24: 1-24 arranged along the mast 110, whereby, with the contact portions 32 being in a mutual current-transmitting position, the energy storage 10 is filled. Alternatively, charging can take place at any location along the mast 110 using the above-mentioned technique which involves power supply by means of pantograph carriage 51 with associated pantographs 55a-55d. It should be understood that the time required to replenish the energy storage system 10, ie. the stop or charge time may vary depending on the selected energy storage technology. However, this will be described in more detail below.
    When the elevator car 107 moves downwards along the mast 110, so-called regenerative braking of the electric motor 109, during which energy generated during braking is collected and stored in the energy storage system 10 supported by the elevator car. That is, the total positional energy which successively emits at the braking movement of the elevator car 107 down the mast 110 is collected and led to the energy storage system 10. The collected energy can later be used to drive the elevator car electric motor 109 when traveling upwards along the mast 110.
    Above all, the stored energy of the elevator car 107 constitutes a significant addition during the acceleration phase of the elevator car, which means that in comparison with prior art the external power demand from the power grid 100 can be reduced and thus also required capacity requirements for the elevator external power supply system.
    The power to and from the respective units connected to the DC bus 11 is controlled and monitored by means of a control system 40, for example a programmable logic control circuit supported by the elevator car 107, so-called PLC or computer. For control and monitoring of the voltage levels of the energy storage 10, a so-called buck-boost circuit or similar circuit for voltage monitoring is arranged in a suitable place in the DC bus 11 (not shown).
    As mentioned above, the energy storage system 10 can be designed in a number of different ways, not least the required time for charging the storage being greatly affected by the energy storage technique thus chosen. With reference also to Figs. 3a and 5a, a number of energy storage systems of different embodiments are described in more detail below.
    Fig. 3 shows in a first embodiment of a device according to the invention wherein for power supply of a rack-mounted elevator car 107 an energy storage system 10 is used which includes an energy storage 60 with a supercapacitor 27. The elevator car 107 is braked regeneratively during its downward movement along the mast 110. recovered position energy is conducted to the supercapacitor 27 included in the energy storage 60 for storage. A DC / AC converter 12 is connected via the DC bus 11 to the AC electric motor 109 of the elevator car for converting the DC direct current supplied by the supercapacitor 27 to an AC alternating current adapted for driving the electric motor 109.
    Fig. 3a shows schematically in a block diagram how the supercapacitor 27 included in the energy storage 60 operates. More specifically, in a first branch line a diode 27a and a charge switch 27b are arranged, the branch line being connected in parallel over the positive side 13 and negative side 14 of the DC bus 11. Furthermore, there is a second branch line with a switch 27c which, when closed, causes the supercapacitor 27 to discharged. The diode 27a only allows current to be conducted in one direction for charging the supercapacitor 27, whereby discharge cannot take place via said first lead line with the diode 27a. When the first W: Other_Casedocuments Patent P409- P40904575SE00 100223 besk.doc 10 15 20 25 30 35 8 branch line is closed, the voltage of the supercapacitor 27 increases so that it eventually exceeds the voltage across a capacitor 27d included in the DC bus 11. . Since the voltage across the supercapacitor 27 is higher than across the capacitor 27d of the DC bus 11, the supercapacitor can be connected for supplying stored energy in the form of current to the electric motor 109 of the elevator car 107 via the converter 12, which in practice takes place by closing the second branch line.
    Fig. 4 shows a second embodiment of a device according to the invention in which for power supply of a rack-mounted elevator car 107 an energy storage system 10 is used which includes an energy bearing 60 with a flywheel 23. The elevator car 107 is braked regeneratively during its downward movement along the mast 110. position energy is conducted to the flywheel 23 for storage. A DC / AC converter 12 is connected via a DC bus 11 with a positive side 13 and a negative side 14 to the drive motor 109 of the elevator car 107.
    The energy storage system 10 comprises a DC / AC converter 21, a three-phase AC induction motor 22 and said flywheel 23. The induction motor 22 may, for example, be constituted by a traction motor, i.e. a three-phase synchronous motor with permanent magnets. When the elevator car 107 moves downwards by the action of the associated electric motor 109, energy is stored in the flywheel 23, which takes place as a result of the electric motor 109 supported by the elevator car 107 being reversed and then functioning as a generator. In this case, generated AC alternating current from the elevator motor 109 is converted to DC direct current via the inverter 20, which direct current after passage through the DC bus 11 is led to the energy storage system 10. Said energy storage system 10 receives and stores the potential energy as kinetic energy in the flywheel 23 by accelerating it by the motor 22 The kinetic energy in the flywheel can then, if necessary, be converted into electric which can be used by the drive motor 109 of the elevator 107. Fig. 5 shows a third embodiment of a device according to the invention in which a power storage system 10 is used for power supply of a rack-mounted elevator car 107. which includes an energy storage 60 with battery pack 70. The elevator car 107 is braked regeneratively during its downward movement along the mast 110, whereby potential energy obtained by braking is directed to the battery pack 70 for storage. A DC / AC converter is connected via a DC bus 11 with a positive side 13 and negative side 14 to the drive motor 109 of the elevator car 107. Fig. 5a shows schematically in a block diagram how the energy storage 60 with the battery pack 70 works. More specifically, the energy storage system 10 here comprises a battery pack which, for storing energy and outputting said energy in the form of a DC direct current, is operated by means of a switch 71.
    It should be understood that in elevator applications of the type described above, it may in some cases be appropriate to combine the above-described alternative energy storage techniques. For example, it would be conceivable to combine one of the supercapacitors 27 or the battery pack 70 W: Other_Casedocuments Patent P409- P40904575SEO0 100223 besk.doc 10 15 20 25 30 35 9 9 relatively large and durable storage capacities with the flywheel 60 fast and efficient energy handling.
    Referring to Fig. 6, the energy demand of a rack-and-pinion elevator in different stages AF of a driving cycle is shown schematically in the form of a graph, block A corresponding to the electricity consumption when accelerating the elevator car 1, 2 to a certain speed in an upward direction of movement along the mast. B corresponds to the power consumption when the elevator car 1, 2 increases its positional energy by moving at a constant speed upwards along the mast.
    Block C corresponds to the energy consumption at deceleration and stopping of the elevator car 1, 2. Block D represents reverse power or return of position energy for storage when accelerating downwards of the elevator car 1, 2. Block E represents reverse energy consumption during constant downward movement and block F represents reverse energy consumption during deceleration and stopping of the elevator car 1, 2 during downward movement.
    Fig. 8 graphically shows the power consumption that can be achieved according to the principles of the present invention, the power consumption being illustrated as constant over time in the hatched block and obtained by returning stored position energy from regenerative motor operation as superimposed current on the current consumed in Fig. 7. is intended to provide an example of how returned and stored in the energy storage system 10 residual power obtained when braking the elevator car 107 during downward movement and which transmitted position energy is stored in, for example, the energy storage system 10 and can be returned at times during the lift cycle when the power required is greatest, for example at the start moment when the elevator car 107 is accelerated. It should also be understood that, as stated in the General Energy Act, the total energy in the power supply system can in principle be regarded as constant, with the only energy consumed in an elevator being the energy that is emitted due to mechanical and electrical losses.
    As mentioned above, the present invention has the great advantage that the position energy levels of the elevator car 107 can be balanced during the acceleration phase and driving up the mast 110 by positioning energy recovered by regenerative operation and braking of the elevator when moving down the mast and stored in the elevator car storage system 10. electric motor 109 for use as fuel.
    Said recirculation, i.e. recovery of position energy and supply of recovered position energy stored in the energy storage 60, to the electric motor 109 thus takes place in immediate connection with the elevator car.
    This feature of the invention is interesting because it means that the power generating mains only needs to supply a limited part of the current required during the critical acceleration phase of the elevator car (see also Figs. 6-7).
    The invention is limited to what is described above and what is shown in the drawings but can be changed and modified in a number of different ways within the scope of the inventive concept stated in the appended claims....................................
    W: Other_Casedocuments Patent P409- P40904575SE00 100223 besk.doc
    权利要求:
    Claims (1)
    [1]
    1. 0 15 20 25 30 35 d) e) f) 9) 3. 11 CLAIMS Procedure for power supply of an elevator of the kind in which a drive machinery (109) is supported by a load carrier (107) and by means of interaction between gears (111 ) and rack (112) can drive the load carrier in a first and second direction along a path along a substantially vertical mast (110), characterized in that it comprises the steps; arranging a load carrier (107); that the load carrier (107) is arranged to support an electrically active electric motor (109) included in the drive machinery, which electric motor is selected so that it regenerates an energy flow during regenerative operation, that the electric motor (109) is arranged to drive the load carrier (107) in the first direction along the web and during reverse regenerative operation can drive the load carrier to generate an energy flow during braking and moving in the other direction down the web, that the load carrier (107) is arranged to carry an energy storage system (10) comprising an energy storage (60) designed to store, receive, and emitting electrical energy, that the load carrier (107) is equipped with a first current transmitting bus (11) allowing the energy flow emitted from the electric motor (109) during braking and regenerative operation to be transferred from the electric motor to the energy storage (60) included in the energy storage system (10); if necessary, conversely transferred from the energy storage to the drive motor, and that the load carrier (107) increases its positional energy during acceleration or movement upwards along the mast (110) by the action of energy taken from the energy store (60). The method of claim 1, further comprising the step; that the load carrier (107) is equipped with a control and monitoring system (40) which, supported by the load carrier, controls and controls current flows between the load carrier's drive machinery (109) and the energy storage (60). A method according to any one of claims 1-2, further comprising the steps; e) that a main power grid (100) is arranged at a ground level, f) that a second current transmitting bus (20) is arranged extending from the main power grid (100) at the ground level and further upwards along the mast (110), g) that the second bus (20) ) is arranged stationary in relation to the load carrier (107) which can be moved along the mast (110), h) power transmission means (24) including a power transmitter (30) and a force receiver (31) cooperating therewith are arranged, W: Other_Casedocuments Patent P409 I) l) 12 that the power supply (30) is arranged supported by the mast (110) and the power receiver (31) is arranged supported by the load carrier (107) and that electrical energy can be transmitted ( 100) to power receivers placed in cooperating position along the path of the load carrier (107) along the mast (110), that the load carrier (107) is supplied with electrical energy from the main power grid (100) by supplying the energy storage (60) with the power supply and the energy storage (60) from the main power grid. if necessary, charged with electr energy from the main power grid (100) Transmitted via the power transmission means (24). The method of claim 2 or 3, wherein the control and monitoring system (40) is selected from any of the following; a programmable logic control circuit s.k. PLC or a computer. A method according to any one of claims 3 to 4, wherein the power transmission means (24) is selected to include any of the following; a number (s) of charging stations (24: 1-24) placed at a mutual distance from each other along the mast (110), each charging station including a power transmitter (30) intended to cooperate with a power receiver (31) supported by the load carrier (107). ); a rail track (50) with electrically conductive busbars extending along the mast (110) and where current is supplied by means of a pantograph carriage (51) with associated pantographs (55a, 55b, 55c, 55d) and which the accompanying elevator car (107) runs guided on the mast along the track and connection and disconnection takes place by means of a switch (55). A method according to any one of claims 1 to 5, wherein the energy storage (60) is charged with energy from the main power grid (100), when the load carrier (107) is at ground level. A method according to any one of claims 3 to 6, wherein the second bus (20) is arranged stationary relative to the load carrier (107) supported immediately on the mast (110) or on some nearby building structure. A method according to any one of claims 1 to 8, wherein the first bus is arranged as a DC bus for conducting direct current and the second bus is arranged as an AC bus for conducting three-phase alternating current. A method according to any one of claims 1 to 8, wherein the energy storage (60) included in the energy storage system (10) is selected from one of the following; a supercapacitor (27), a battery pack (70), a flywheel (60); or a combination of these. W: Other_Casedocuments Patent P409- P40904575EN00 100223 besk.doc 10 15 20 25 30 13 10. Device for powering an elevator of the type in which a drive machinery (109) is supported by a load carrier (107) and by means of cooperation between gears (111) and rack (112) can drive the load carrier in a first and second direction along a substantially vertical path along a mast (110), characterized in that each load carrier (107) in the elevator comprises; a) an electrically active electric motor (109) included in the drive machinery arranged to drive the load carrier (107) up the track and during reverse operation and braking of the load carrier when moving in said second direction down the track generates an energy flow through so-called regenerative operation, b) an energy storage system (10) with an energy storage (60) for storing, receiving and delivering electrical energy to the electric motor (109), c) a first current transmitting bus (11), permitting from the electric motor (109) during braking delivered energy flow to be transferred from the electric motor to the energy storage (60) included in the energy storage system (10) and, if necessary, conversely transferred from the energy storage to the drive motor, and d) a control and monitoring system (40) for controlling and controlling current flows between the load carrier drive machinery (109) and energy storage (60). Device according to claim 10, comprising a main power network (100) arranged at a basic level, e) a second current transmitting bus (20) extending from the main power network (100) and further upwards along the mast (110) is stationary relative to that along the the load carrier (107) operable to the mast (110), f) a power transmission means (24) comprising a power transmitter (30) arranged on the mast (110) designed to cooperate with a power receiver (31) arranged on the load carrier and that electrical energy is transmitted from the main power grid (100). ) to the energy storage (60) of the energy storage system (10) when said power transmitter and power receiver are in cooperating position. Use of a supercapacitor (27), a battery pack (70), a flywheel (60); or a combination of these for storing energy in an elevator with load carriers (107) of the type specified in any one of the preceding claims. W: Other_CasedocumentslPatent P409- P40904575SE00 100223 beskdoc
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    同族专利:
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    引用文献:
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    申请号 | 申请日 | 专利标题
    SE1050183A|SE536864C2|2010-02-26|2010-02-26|Method and apparatus for power supply of rack-mounted lifts.|SE1050183A| SE536864C2|2010-02-26|2010-02-26|Method and apparatus for power supply of rack-mounted lifts.|
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