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1.发明授权公开(公告)号：US10756546B2
公开(公告)日：2020-08-25
申请号：US16059807
申请日：2018-08-09
发明人： Prasad Pmsvvsv , Ranganathan Gurunathan , Swaminathan Venkataraman , Arne Ballantine , Deepak Balakrishnan
摘要： A method of controlling an inverter having a three phase output and a plurality of single phase loads connected to respective one of the three phases of the three phase output includes determining if a first phase of the three phase output has a heavier load than a second phase of the three phase output, and providing a higher output power from the inverter to the first phase than to the second phase if it is determined that the first phase has a heavier load than the second phase.
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公开(公告)号：US12132322B2
公开(公告)日：2024-10-29
申请号：US18178857
申请日：2023-03-06
发明人： Prasad Pmsvvsv , Rakesh Roy , Soma Depuru
CPC分类号： H02J3/381 , C25B9/65 , H02J2207/20 , H02J2300/26
摘要： A power control device for an electrolyzer that is configured to receive electrical current from a plurality of electrical power sources, rectify alternating current from a first subset of the plurality of electrical power sources, convert direct current from a second subset of the plurality of electrical power sources, provide power from the first subset and the second subset of electrical power sources to an energy bus, and receive, at the electrolyzer, power from the energy bus.
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3.发明授权公开(公告)号：US12046897B2
公开(公告)日：2024-07-23
申请号：US18052638
申请日：2022-11-04
IPC分类号： H02J1/10 , H01M8/04858 , H01M8/2425 , H01M8/2495 , H02J3/38 , H02J9/06 , H01M8/12
CPC分类号： H02J1/102 , H01M8/04858 , H01M8/2425 , H01M8/2495 , H02J3/38 , H02J9/061 , H01M2008/1293 , H02J2300/30
摘要： A method for operating a fuel cell system includes drawing a base level DC electric energy from a first fuel cell of a first type to a combined DC bus, measuring a DC voltage at the combined DC bus, determining whether the DC voltage at the combined DC bus falls short of a DC voltage threshold, and drawing a variable DC electric energy from a second fuel cell of a second type different from the first type in response to determining that the DC voltage at the combined DC bus falls short of the DC voltage threshold.
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公开(公告)号：US11990790B2
公开(公告)日：2024-05-21
申请号：US17686877
申请日：2022-03-04
发明人： Prasad Pmsvvsv , Mehdi Ebad , Ranganathan Gurunathan , Vishal Anand Gopalakrishnan , Jayanth Moodliar , Saravana Narayanasamy , Rakesh Kumar Roy , Deepak Balakrishnan
CPC分类号： H02J9/062 , H02J3/381 , H02J3/388 , H02M7/44 , H01M2250/10 , H02J2300/30
摘要： A microgrid includes a power system configured to output system power and an automatic transfer switch (ATS). The ATS includes a normal terminal that is electrically connected to a grid power line configured to receive grid power from a power utility, an emergency terminal that is electrically connected to a system power line configured to receive system power from the power system, and a load terminal that is electrically connected to a critical load line configured to provide power to a critical load. The microgrid also includes a bypass line electrically connected to the system power line and the critical load line, so as to bypass the ATS, and a circuit breaker configured to control power flow through the bypass line.
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公开(公告)号：US11689049B2
公开(公告)日：2023-06-27
申请号：US17321116
申请日：2021-05-14
摘要： A power generation method includes providing power from a first DC power source to a load, while a second DC power source is electrically disconnected from the load, electrically connecting the second DC power source to the load and providing power from the second DC power source to the load if an output voltage from the first DC power source drops below a threshold voltage and an output voltage from the second DC power source is not below the threshold voltage, and electrically disconnecting the first DC power source from the load if an output current of the first DC power source is below a threshold current.
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6.发明授权Structure and method for fuel cell system where multiple fuel cells and power electronics feed loads in parallel allowing for integrated electrochemical impedance spectroscopy (EIS) 有权燃料电池系统的结构和方法，其中多个燃料电池和电力电子装置并联馈送负载，用于集成电化学阻抗谱（EIS）公开(公告)号：US09461320B2
公开(公告)日：2016-10-04
申请号：US14619779
申请日：2015-02-11
CPC分类号： H01M8/04649 , H01M8/04679 , H01M8/04753 , H01M8/249 , H01M2250/10 , H02M1/14 , Y02B90/14
摘要： Systems, methods, and devices of the various embodiments enable electrochemical impedance spectroscopy (“EIS”) to be performed on electrochemical devices, such as fuel cell stack segments, by power electronics connecting the electrochemical devices in parallel to a common load and/or bus. In an embodiment, the power electronics may compensate for any ripple generated during EIS such that no ripple is realized at the common load and/or bus.
摘要翻译： 各种实施方案的系统，方法和装置使得电化学阻抗谱（“EIS”）能够在诸如燃料电池堆段之类的电化学装置上通过电力电子装置将电化学装置并联连接到公共负载和/或总线 。 在一个实施例中，功率电子器件可以补偿在EIS期间产生的任何纹波，使得在公共负载和/或总线处不实现纹波。
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7.发明授权公开(公告)号：US11916378B2
公开(公告)日：2024-02-27
申请号：US16555252
申请日：2019-08-29
发明人： Arne Ballantine , Prasad Pmsvvsv , Rajesh Gopinath , Ranganathan Gurunathan , Robert Harris , Marshall Worth , Chaitanya Mandela , Vishal Anand Gopalakrishnan
CPC分类号： H02J13/0001 , H01M8/04873 , H01M8/04932 , H02J3/38 , H02J9/06 , H02J13/00 , H01M2008/1293 , H02J2300/30
摘要： A power generation system includes a power source that is configured to communicate with at least one of a downstream load or a downstream device by changing a voltage on a power bus between the power source and the at least one of the downstream load or the downstream device, while power source provides power on the power bus to the at least one of the downstream load or the downstream device.
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公开(公告)号：US11848559B2
公开(公告)日：2023-12-19
申请号：US18053572
申请日：2022-11-08
CPC分类号： H02J3/381 , H02J3/007 , H02J2203/10 , H02J2300/30
摘要： Excess DC current generated by a fuel cell stack may be provided to a current source inverter, and an AC current may be output by the current source inverter to a grid side bus. The AC current on the grid side bus may be used to support a load demand on a microgrid side bus or provided to a power grid. Various transmission buses and electric conditioning and control devices, such as rectifiers, current source inverters, motors, generators, electric contactors, relays, and/or transfer switches may be configured to use the AC current on the grid side bus to provide an AC current to the microgrid side bus to support the load demand on a microgrid side bus.
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9.发明授权公开(公告)号：US11664521B2
公开(公告)日：2023-05-30
申请号：US17174923
申请日：2021-02-12
发明人： Tad Armstrong , Harald Herchen , David Weingaertner , Rajan Surve , Matthias Gottmann , Prasad Pmsvvsv , Ranganathan Gurunathan , Arne Ballantine , Michael Gasda , Tyler Dawson , Chockkalingam Karuppaiah
IPC分类号： H01M8/04 , H01M8/249 , H01M8/2483 , H01M8/0267 , H01M8/04858
CPC分类号： H01M8/249 , H01M8/0267 , H01M8/0488 , H01M8/0491 , H01M8/2483
摘要： A fuel cell system column includes a first terminal plate connected to a first electrical output of the column, a second terminal plate connected to a second electrical output of the column, at least one first fuel cell stack located in a middle portion of the column between the first terminal plate and the second terminal plate, and at least one electrical connection which is electrically connected to the middle portion of the column and which is configured to provide a more uniform fuel utilization across the first column.
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公开(公告)号：US11637507B2
公开(公告)日：2023-04-25
申请号：US17317759
申请日：2021-05-11
发明人： Prasad Pmsvvsv , Beau Baker , Craig Metcho
IPC分类号： H02M7/797 , H02M7/537 , H02J9/06 , H01M8/1253 , H01M8/12
摘要： A microgrid system includes first and second DC power sources electrically connected to respective first and second DC electrical power busses, a first uninterruptable power module electrically connected to the first DC electrical power bus and configured to be connected to an alternating current (AC) load, a second uninterruptable power module electrically connected to the second DC electrical power bus and configured to be connected to the AC load, a first bi-directional AC/DC inverter having a DC end and an AC end, where the first DC electrical power bus is connected to the DC end of the first bi-directional AC/DC inverter, a second bi-directional AC/DC inverter having DC and AC ends, where the second DC electrical power bus is connected to the DC end of the second bi-directional AC/DC inverter, and an AC electrical power bus electrically connected to the first and second bi-directional AC/DC inverters at their AC ends.
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