• 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:
    HYBRID ELECTRIC POWER STATION FOR IMPROVING DYNAMIC PERFORMANCE AND EFFICIENCY. A hybrid power plant is characterized by a substantially constant load on generators despite momentary fluctuations in the power load. Small changes in the power load are accommodated by DC components, such as capacitors, batteries, resistors, or a combination of them. Resistors are used for energy consumption when loads at the power plant are generating power when loads at the power plant demand additional energy. The reduction of rapid changes in the power load, as seen by the generators, allows the generators to operate under higher efficiencies and with reduced emissions. Additionally, power plants employing combinations of generators, loads, and energy storage devices have improved dynamic performance.
    公开号:BR112012031593B1
    申请号:R112012031593-5
    申请日:2011-06-13
    公开日:2020-12-08
    发明作者:Edward Peter Kenneth Bourgeau
    申请人:Transocean Sedco Forex Ventures Ltd.；
    IPC主号:
    专利说明:

    Technical Field
    This report relates, in general terms, to power transmission networks. More specifically, this report refers to the operation of a DC system arising from one or more DC or AC or DC power generators. Even more specifically, this report refers to improving the efficiency of an AC generator when connected to a DC bus by providing an approximately constant load for the generators. Fundamentals of the Invention
    Power transmission networks can be formed from AC systems, DC systems, or a combination of the two. AC power networks have been used, conventionally, throughout the world. However, DC power networks have certain advantages. DC power networks are easier to design and implement due to not introducing reactions within the power system. Higher efficiency of generators in DC systems can be achieved because only real energy is transmitted. In addition, the parallelism of energy supplies becomes simple due to the lack of synchronization when additional loads or supplies are brought into the network.
    Therefore, in power networks that experience large load fluctuations with generators and require reliable operation, a combination of DC and AC systems is beneficial. An example of such a power network is found on drilling platforms or vessels operating on-board buoyancy equipment. Drilling vessels are not anchored in the ocean, but are dynamically controlled to maintain a desired position in the ocean. The thrusting equipment consists of propulsive propellers that can have rotational speed and the azimuth angle of the variable blades. They are used to maintain a position within the specified tolerances of a drilling rig. This buoyancy equipment is operated by a power source on board the drilling vessel. Any failure of the power supply can lead the vessel to move outside the tolerances of the drilling rig. In such a situation, the drilling rig would need to be mechanically decoupled and re-coupled after restoration of the supply source and correction of the position of the drilling vessel.
    A method of facilitating a reliable power source is to use a DC bus for powering buoyancy equipment and other components. Such a power transmission system is shown in FIGURE 1. In such a system, the power supply is generally made up of AC generators coupled to an AC to DC converter, such as the AC to DC converter 112. The AC to DC supplies power from the AC generators on an intermediate DC bus. Each motor or buoyancy equipment, as well as other devices using the intermediate DC bus, on board the drilling vessel, is coupled to the intermediate DC bus through a DC to AC converter.
    FIGURE 1 consists of a block diagram illustrating a conventional DC voltage bus coupling multiple AC voltage generation systems for various loads. The power system 100 includes generators 102. Generators 102 are coupled to an AC bus 104 through insulators 106. Isolators 106 allow generators 102 to be removed from AC bus 104 when they are not being used or are malfunctioning. AC bus 104 is coupled to a transformer 108 to supply power for transmission to a line 110. An AC to DC converter 112 is coupled to line 110 and converts the AC power on line 110 to DC power for output to an intermediate DC bus 120. DC to AC 130 converters are coupled to the DC 120 bus. DC to AC 130 converters convert DC power on the DC 120 bus to AC power designed for use on most devices. Coupled to the DC to AC 130 converters there is a line 132 to which loads can be connected. A force-dissipating device 134 is coupled to line 132, and the force-dissipating device 134 can be, for example, a buoyancy device. In addition, a transformer 135 is coupled to line 132 to supply power to a load 136. Load 136 can be, for example, an electric lamp.
    Another example of engine 134 may be the on-board extraction machine on the drilling platform. The extraction machine consists of a machine coiling in and out of the drilling line, conventionally including a steel spool, brakes, and a power supply. The operation of the extraction machine next to the cylinder on the drilling line may require the full capacity of the generators on board the ship. However, there are operational conditions where the extraction machines may not consume any energy. In reverse operation, the extraction machine can generate energy that is put back on line 132, while gravity meets the winding off the drilling line. Changes in the force load can occur almost instantly.
    Rapid changes in the load on the generator require the generator to increase the power output to generate the energy demanded by the load. Diesel generators are designed to consume fuel at an optimized rate over a small range of available power output. Diesel fuel costs are the highest for operating a diesel generator in relation to its lifetime. Therefore, an operator seeks to keep the generator operating in the optimized power output range depending on fuel consumption.
    Turning now to FIGURE 2, power output curves for a diesel generator are examined. FIGURE 2 consists of a graph illustrating the operation of a diesel generator. A 220 curve represents the fuel consumption in kilograms per kilowatt-hour of the diesel generator for various engine loads (power output). A range between 0 and 100 percent of nominal output demonstrates a variation in the rate of kilos (kw / hour), or the efficiency of fuel consumption. In order to operate efficiently, a range of 230 load force must be maintained in the diesel generator. If the load increases or decreases, the engine's energy consumption and efficiency change.
    In addition to fuel consumption issues, washing equipment in diesel generators that reduce dangerous exhaust is sensitive to the volume of the exhaust. Rapid changes in engine power vary the rate of exhaust flow and the chemical components of the exhaust. Because the scrubber equipment is designed to operate optimally in a steady and steady exhaust stream, the output emissions may not be minimized if the power load varies rapidly.
    In addition, the dynamic performance of diesel generators is limited. That is, diesel generators may not increase the power output quickly enough to match the increased load on the diesel generator.
    Conventionally, additional diesel generators must be brought in line if the growth rate of the power load exceeds the growth rate of the power output of the diesel generator. No diesel generator will work efficiently, resulting in increased fuel consumption and express capacity when there are peaks in the power load.
    Referring now to FIGURE 3, the generators and power loads will be examined in a conventional power plant. FIGURE 3 consists of a block diagram illustrating the power distribution in a conventional power plant 300. Power plant 300 includes an AC generator 302 coupled to a distribution panel 308 via an AC line 306. The distribution panel 308 is coupled to multiple loads. For example, typical loads on board ships and drilling are represented by a power dissipation device 312 coupled to the distribution panel 308 by an AC line 310. Additionally, the distribution panel 308 is coupled to an AC converter for DC 318. The AC to DC 318 converter is coupled to an AC 316 line and a DC 320 line. Additional loads can be coupled to the DC 320 line. For example, a 322 lamp can be coupled to the DC 320 line or to a converter DC to AC 324. The DC to AC 324 converter couples additional AC loads, such as a power dissipation device 326. The power dissipation device 326 may comprise of an extraction machine, described above or a motor. Each of the loads 312, 322, 326 produce different loads of energy next to the AC 302 generator. Then, the AC 302 generator is examined.
    FIGURES 4A AND 4E comprise graphs illustrating energy consumption in a conventional power plant, as in FIGURE 3. A line 402 in FIGURE 4A indicates energy consumption in the power dissipation device 312. The loads on board the ship, like the power dissipation device 312, they operate as a constant load over long periods of time, such as hours on the AC 302 generator. Line 402 is a positive indication of energy consumption. A line 404 in FIGURE 4B indicates the power consumption next to the power dissipation device 326. The extraction machine works like the power dissipation device 326 operating as a variant load, which can change quickly, as in milliseconds in the generator AC 302. Line 404 varies between the negative and positive values indicating the energy consumption by the load in some opportunities, producing energy in other occasions. A line 406 in FIGURE 4C indicates energy consumption in lamp 322. Lamp 322 operates under a constant load over long periods of time, such as hours next to the AC 302 generator.
    The total energy transferred through the AC to DC converter 318 is represented by the addition of line 404 to line 406 and is shown in line 408 in FIGURE 4D. Line 408 comprises the total energy consumption with respect to the time of line DC 320. The total energy supplied by the generator AC 302 is shown in line 410 in FIGURE 4E and comprises the sum of lines 408, 402. In the conventional power station 300 the power supplied by the AC 302 generator varies with time. This leads to undesirable qualities exhibited by the AC 302 generator, as indicated above, including inefficient fuel consumption and poor exhaust cleanliness.
    Thus, there is a need for a power plant model that produces a substantially constant load with AC generators and increases dynamic performance. Brief Summary of the Invention
    A power plant includes an AC generator, an AC to DC converter coupled to the AC generator and a DC bus, and a switch coupled to the DC bus. The power plant also includes an active power compensation system attached to the switch. The active power compensation system reduces power load variations in the power plant. The switch may include a DC to AC converter. The active power compensation system can include power consumption devices. Power consumption devices can be resistors. The power plant may also include energy storage devices. The energy storage devices comprise of ultra-capacitors. The ultracapacitors can be coupled to one or more microcontrollers. One or more of the microcontrollers can regulate the ultracapacitors. Energy storage devices may include batteries or rotational machines.
    A method of reducing variations in a power load on a generator includes directing the energy between the generator and the power consumption device during a time when the power load on the generator is less than at a first level. The energy consumption device may include a resistive element. The first level can be based, in part, on the fuel efficiency of the generator.
    A method of reducing variations in a power plant containing a generator includes directing the energy between the generator and the energy storage device during a time when the power load on the power plant is less than at a first level. The energy storage device stores energy provided by the generator. The energy storage device can include at least one ultracapacitor. The energy storage device can include at least one battery. The first level can be based, in part, on the fuel efficiency of the generator. The method may also include directing the energy between the generator and the energy storage device during a time when the power load at the power plant is higher than at a second level. The second level can be chosen, in part, based on the fuel efficiency of the generator. The method also includes directing the energy between the generator and an energy consumption device during a time when the power load in the power plant is lower than that of a third level. The third level can be lower than the first level. The third level can be chosen based, in part, on the capacity of the energy storage device.
    A power plant includes means for generating power by meeting a power load from the power plant. The power plant also includes means for varying the reduction in the power load of the power plant. The means for varying the reduction may include means for the consumption of energy. The means of varying the reduction may include means for storing energy.
    The previous presentation broadly highlighted the characteristics and technical advantages of this report so that the detailed description, given below, can be better understood. Additional features and benefits will be described below, which are the subject of the claims in this report. It should be appreciated by experts in the field that the concept and specific modalities described can be readily used based on the modification or idealization of other structures to achieve the same purposes as this specification. It should be noted by experts in the field that such equivalent constructions do not deviate from the description report technology, established in accordance with the attached claims table. The innovative characteristics, believed to be pertinent to the specification, as well as the organization and the method of operation, together with other aspects and advantages, will be better understood from the description that follows when considered in connection with the figures of side dish. It should be expressly understood, however, that each of the figures is provided for illustrative and descriptive purposes only, and is not intended as a definition of the limits of this specification. Brief Description of Drawings
    For a more complete understanding of the present invention, reference is now made to the following descriptive parts taken in conjunction with the accompanying drawings.
    FIGURE 1 comprises a block diagram illustrating a conventional DC voltage bus coupling multiple AC voltage generation systems for various loads.
    FIGURE 2 comprises a graph illustrating the operation of a diesel generator.
    FIGURE 3 comprises a block diagram illustrating an energy distribution in a conventional power plant.
    FIGURES 4A to 4E comprise of graphs illustrating the energy consumption in a conventional power plant as in FIGURE 3.
    FIGURE 5 comprises a block diagram illustrating an energy distribution in an example power plant containing power dissipation devices for the consumption of regenerated energy according to an embodiment.
    FIGURES 6A to 6F comprise graphs illustrating the energy consumption in an example power plant containing resistors for the consumption of energy regenerated according to a modality.
    FIGURE 7 comprises a block diagram illustrating the distribution of energy in an example power plant containing active power compensation according to a modality.
    FIGURES 8A to 8G comprise graphs illustrating the energy consumption in an example power plant containing active power compensation according to a modality.
    FIGURES 9A to 9G comprise of graphs illustrating the energy consumption in an example power plant containing active power compensation and an energy storage device with limited capacity according to a modality.
    FIGURE 10 comprises a block diagram illustrating an example active power compensation system according to an embodiment. Detailed Description of the Invention
    The variation in load reduction in a generator in a power plant can be effected by adding devices that dissipate energy during short intervals when energy loads are volatile. In this arrangement, the generator may be able to continue operation at a higher output, while the power dissipation devices remove the energy generated by some loads. Without energy-dissipating devices to remove energy generated by loads, generators would reduce power output and allow other loads to absorb regenerated energy.
    FIGURE 5 comprises a block diagram illustrating the distribution of energy in an example power plant containing dissipation devices for the consumption of regenerated energy according to a modality. A hybrid power station 500 includes an AC generator 502 coupled to a distribution panel 508 via an AC line 506. The distribution panel 508 is coupled to the AC line 506 and an AC line 510. A power dissipation device 512 is coupled to the AC 510 line. The power dissipation device 512 can represent, for example, the loads on board the ship. The distribution panel 508 is also coupled to the AC to DC 518 converter via an AC 516 line. The AC to DC 518 converter supplies power to a DC 520 line. A lamp 522 is coupled to the DC 520 line. Additionally, a DC to AC converter 524 is coupled to a power dissipation device 526 and the DC line 520. The power dissipation device 526 can be an extraction machine, according to the previous description. In addition, a DC to DC converter 532 couples a power dissipation device 534 to the DC line 520. The power dissipation device 534 can comprise of any device capable of consuming energy. For example, the power dissipation device 534 can be a resistor, variable resistor, water block, or a combination of the devices mentioned above. Next, there is an evaluation of the energy demand in an AC 502 generator from loads 512, 522, 526, 534.
    The loads in the various locations in the hybrid power plant 500 are examined with reference to FIGURE 6. FIGURES 6A to 6F comprise graphs illustrating the energy consumption in an example power plant containing resistors for the consumption of regenerated energy according to a modality. A line 602 in FIGURE 6A indicates the power consumption of the power dissipation device 512. The loads on board the ship, such as the power dissipation device 512, operate under a constant load over extended periods of time. time at the power station. A line 606 in FIGURE 6C indicates energy consumption in lamp 522. Lamp 522 operates under constant load over extended periods of time at the hybrid power plant 500. A line 604 in FIGURE 6B indicates power consumption in the heat dissipation device. force 526. The extraction machine, like the force dissipating device 526, presents a force load that varies rapidly with time at intervals as small as milliseconds. In the case of the power dissipation device 526, the force load is positive on some occasions and negative on other occasions. During the positive portion of line 604, the power dissipation device 526 consumes energy; during the negative portion of line 604, the power dissipation device 526 supplies power to the power plant.
    During the time when the power dissipation device 526 is supplying power to the hybrid power plant 500, the AC 502 generator will reduce the power output to accommodate the regenerated energy. According to the above description, the AC 502 generator loses efficiency when its power output is reduced or changes rapidly. Therefore, the power dissipation device 534 can be switched by the DC to DC converter to consume excess energy on the DC line 520. This allows the AC 502 generator to continue operating at an approximately constant power output. A line 608 in FIGURE 6D indicates the power consumption by the power dissipation device 534. Line 608 is possible because the power dissipation device 534 is able to only consume energy. The DC to DC converter is switched sometimes, when it is advantageous to add additional energy consumption next to the hybrid power plant 500. According to one embodiment, line 608 represents the energy consumption substantially equal in magnitude to line 604 during the period time when line 604 is negative. Therefore, the power dissipation device 534 consumes energy generated by the power dissipation device 526. The DC to DC converter 532 can be switched for a longer or shorter period of time depending on the condition of the other loads in the hybrid power plant 500.
    The total energy transferred through the AC to DC 518 converter is indicated by line 610 in FIGURE 6E. Line 610 consists of a sum of lines 604, 606, 608. The total energy supplied by the generator AC 502 is indicated by line 612 in FIGURE 6F. Line 612 consists of a sum of lines 610, 602. Line 612 indicates that the load on the hybrid power plant 500 is confined close to a narrow strip, narrower than that referring to line 410 in FIGURE 4E, where no force dissipation is implemented. For example, line 612 has a minimum of 1 MW while line 410 has a minimum of 0 MW. The addition of the power dissipation device 534 and the DC to DC converter 532 limits the reduction in power output of the AC 502 generator when one of the loads in the hybrid power plant 500 generates power. The lower efficiency operating range of the AC 502 generator comprises the low power output, however, the efficiency of the AC 502 generator in the hybrid power plant 500 is improved by not operating the AC 502 generator on low power loads.
    The power plant can also be adapted to increase efficiency if the energy generated by the loads can, instead of being dissipated, be stored and used later when the demand for energy increases. It has to be noted that an increase in the load on the power station will result in a discharge of the stored energy, allowing the AC generator to continue operating for an approximately constant load of engine power. A system for energy storage and energy supply depending on the conditions at the power plant is referred to as an active power compensation system.
    FIGURE 7 comprises a block diagram illustrating an energy distribution in an example power plant containing active power compensation according to a modality. A hybrid power plant 700 includes a power storage device 744 coupled to the DC 520 line via the DC to DC 742 converter. The energy storage device 744 can be switched by the DC to DC 742 converter when additional power must be supplied to the DC 520 line. The energy storage device 744 can still be switched at times when excess energy is supplied to the DC 520 line, so that energy can be stored by the energy storage device 744. The The energy storage device 744 may comprise any energy storage device including, but not limited to, spring tension, fuel cells, steering wheels, capacitors, variable capacitor, ultracapacitors, batteries, or a combination of the devices mentioned above. In addition to the energy storage device 744, the hybrid power plant 700 may, in one embodiment, also include the power dissipation device 534 coupled to the DC to DC converter 532.
    Turning attention now to FIGURE 8, an evaluation of the load is made on the hybrid power plant 700 in the various locations. FIGURES 8A to 8G comprise of graphs illustrating the energy consumption in an example power plant containing active power compensation according to a modality. Lines 602, 604, 606 of FIGURES 8A, 8B, and 8C, respectively, are identical to those referring to FIGURE 6. A line 809 in FIGURE 8E indicates the power load of the energy storage device 744. The line 809 has substantially the same magnitude as line 604, but with opposite polarity. Line 809 comprises a mirror image of line 604. The energy storage device 744 stores energy during periods of excess power generation and supplies energy during periods of power generation deficiency. Variations in the power load on the AC 502 generator have been reduced. The reduction is a result of the energy storage device 744 consuming power during the time that the power dissipation device 526 is supplying power back to the hybrid power plant 700. A line 808 in FIGURE 8D indicates the power load on the device power dissipation 534. The power load on the AC to DC converter 518 on the hybrid power plant 700 is indicated by line 810 in FIGURE 8F. Line 810 comprises the sum of lines 808, 809, 606, 604 and has a substantially constant value. A line 812 in FIGURE 8G indicates the full power load on the AC 502 generator and comprises the sum of lines 810, 602 and also has an approximately constant value.
    Thus, the use of the energy storage device 744 reduces the effects of a varying power load on the AC 502 generator. The energy storage device 744 can adapt the changes in the power load of the power dissipation device 526 and the others. loads in the hybrid power plant 700. The approximately constant power load in the AC 502 generator allows for continuous operation in the most efficient operating region of the AC 502 generator. Additionally, the energy storage device increases the dynamic performance of the hybrid power plant 700 The AC 502 generator in response to an increased power load may not be able to increase the output fast enough to match the increased power load. The energy storage device 744 can have a shorter response time for increasing the power load and provide additional power while the AC generator increases the output to match the power load on the hybrid power plant 700. According to a trend, the improved dynamic performance of the hybrid power plant 700 containing the energy storage device 744 enables the AC generator to maintain a substantially constant power output.
    The power dissipation device 534, in one embodiment, is used to consume energy when the generation of power by the power dissipation device 526 exceeds the capacity of the energy storage device 744. FIGURES 9A to 9G comprise of graphs illustrating energy consumption in an example power plant containing active power compensation and an energy storage device with limited capacity, according to one modality. Line 909 in FIGURE 9E represents energy in the energy storage device 744. According to one embodiment, the energy storage device 744 has an energy capacity of 1 megaJoule. During the power consumption of line 604, line 909 is negative indicating that the energy storage device 744 is supplying power. During power generation on line 604, line 909 is positive indicating that the energy storage device is storing power. As the energy storage device 744 reaches a maximum energy capacity at time t2, the energy storage device will seek to absorb the regenerated force from load 526 in order to preserve a substantially constant load on the AC 502 generator. actual energy consumption of the energy storage device 744 may vary from the mode shown. Line 908 in FIGURE 9D illustrates that during the portion of time that the energy storage device 744 is close to capacity, the force dissipating device 534 consumes power. It should be noted that the sum of the distribution panel 508 provides the same load of force as shown in FIGURE 8.
    FIGURE 10 comprises a block diagram illustrating an example active power compensation system according to an embodiment. An active power compensation system 100 can be employed to store and supply power to the hybrid power plant 700. An input line 1012 is used to connect the active power compensation system next to a power plant. The 1000 active power compensation system includes several 1034 columns of energy storage devices. Each column 1034 includes energy storage devices 1042. Energy storage devices 1042 can be, for example, ultracapacitors, capacitors, batteries, or flywheels. The 1042 energy storage devices are stacked in series to obtain a desired voltage and in 1034 columns to obtain a desired current or optimized energy density. The 1042 energy storage devices are controlled by the 1044 microcontrollers to regulate the loading and unloading activities. For example, microcontrollers 1044 can disconnect damaged or defective power devices 1042 from columns 1034.
    Examples of hybrid power plants for drilling vessels including cargo aboard ships in the above modalities were presented. However, the power plants described can be adapted for use in a number of other applications. Additionally, power plants can include AC or DC generators and loads. AC to DC, DC to AC, and DC to DC converters, shown according to the previous figures, can be unidirectional or bidirectional. A specialist in the field would be able to replace, for example, an AC to DC converter in a DC to AC converter, depending on the load configuration and the characteristics (ie DC load or AC load) of a power plant particular.
    Although this specification and its advantages have been described in detail, it should be understood that several changes, substitutions and alterations can be made without departing from the spirit and scope of the specification, as defined by the attached claims table. Furthermore, the scope of the present request is not intended to be limited to the particular modalities of the process, machinery, manufacturing, material composition, means, methods and steps described by this specific report. A specialist in the field will appreciate from the present invention, description, machines, manufacture, compositions and material, means, methods, or stages, presently existing or coming to be developed later performing substantially the same function or substantially achieving the same result of the modalities corresponding documents described in this document that can be used in accordance with the present specification. Consequently, the appended claims are intended to include, within their scope, such processes, machines, manufacturing, compositions of matter, means, methods, or stages.
    权利要求:
    Claims (19)
    [0001]
    1. Power plant, comprising: an AC generator (502); an AC to DC converter (518) coupled to the AC generator (512) and a DC bus (520); a switch (742) coupled to the DC bus (520); and an active power compensation system (744) coupled to the switch (742), CHARACTERIZED by the fact that the active power compensation system reduces power load variations in the power plant (700).
    [0002]
    2. Power plant, according to claim 1, CHARACTERIZED by the fact that the switch (742) comprises a DC to DC converter (742).
    [0003]
    3. Power plant, according to claim 1, CHARACTERIZED by the fact that the active power compensation system (744) comprises energy consumption devices (534) for energy consumption when a load on the power plant (700 ) decreases.
    [0004]
    4. Power plant, according to claim 3, CHARACTERIZED by the fact that the energy consumption devices (534) are resistors.
    [0005]
    5. Power plant, according to claim 3, CHARACTERIZED by the fact that the active power compensation system (744) also comprises at least one energy storage device (1042) for energy supply when the load in the power plant ( 700) increases.
    [0006]
    6. Power plant, according to claim 5, CHARACTERIZED by the fact that the energy storage device (744) comprises at least one ultracacitor, a capacitor, a battery, and a steering wheel.
    [0007]
    7. Power plant, according to claim 6, CHARACTERIZED by the fact that at least one energy storage device (1042) is coupled to one or more microcontrollers (1044), in which one or more microcontrollers regulate at least one device of energy storage (1042).
    [0008]
    8. Power plant, according to claim 1, CHARACTERIZED by the fact that it comprises: means for generating power meeting a power load from the power plant (700); and means for varying the reduction in the power load of the power plant (700).
    [0009]
    9. Power plant, according to claim 8, CHARACTERIZED by the fact that the means of variation of reduction comprise means for energy consumption.
    [0010]
    10. Power plant, according to claim 9, CHARACTERIZED by the fact that the means of variation of reduction also comprise means for energy storage.
    [0011]
    11. Method of reducing variations in a power load on a generator in a power plant (700), FEATURED for understanding: directing the energy between the generator and at least one power consumption device (534) during a time when the power load on the generator is less than a first level to maintain a constant power output from the generator.
    [0012]
    12. Method, according to claim 11, CHARACTERIZED by the fact that it comprises at least one resistive element, variable resistive element, and an opening for water.
    [0013]
    13. Method, according to claim 11, CHARACTERIZED by the fact that the first level is based, in part, on the fuel efficiency of the generator.
    [0014]
    14. Method of reducing variations in a load of power in a generator in a power plant (700), FEATURED by the fact that it understands: directing the energy between an energy storage device (744) and the generator during a time when the power load on the generator is higher than a first level, where the energy storage device (744) provides power to the power station (700) to maintain a constant power output from the generator.
    [0015]
    15. Method according to claim 14, CHARACTERIZED in that the energy storage device (744) comprises at least one ultracapacitor, a capacitor, a battery, and a steering wheel.
    [0016]
    16. Method, according to claim 14, CHARACTERIZED by the fact that the first level is based, in part, on the fuel efficiency of the generator.
    [0017]
    17. Method, according to claim 14, CHARACTERIZED by the fact that it also comprises: directing the energy between the generator and the energy storage device (744) during a time when the power load in the power plant (700) is less than a second level, where the second level is less than the first level, and where the energy storage device stores energy from the power station (700) for maintaining the constant power output of the generator.
    [0018]
    18. Method, according to claim 17, CHARACTERIZED by the fact that the second level is chosen, in part, based on the fuel efficiency of the generator.
    [0019]
    19. Method, according to claim 17, CHARACTERIZED by the fact that it further comprises: directing the energy between the generator and the energy consumption device (534) during a time when the energy capacity of the energy storage device (744 ) is answered.
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    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-07-02| B06T| Formal requirements before examination [chapter 6.20 patent gazette]|
    2020-03-31| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2020-08-25| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-08| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 13/06/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/816,576|2010-06-16|
    US12/816,576|US8373949B2|2010-06-16|2010-06-16|Hybrid power plant for improved efficiency and dynamic performance|
    PCT/US2011/040120|WO2011159589A1|2010-06-16|2011-06-13|Hybrid power plant for improved efficiency and dynamic performance|
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