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公开(公告)号：US10763655B2
公开(公告)日：2020-09-01
申请号：US16124169
申请日：2018-09-06
发明人： Xu She , Rajib Datta , Ravisekhar Nadimpalli Raju , Maja Harfman-Todorovic , Philip Michael Cioffi
摘要： An electrical system includes a power electronics system and a bus bar coupled to the power electronic system. The power electronics system includes a switching device configured to selectively connect and disconnect. The bus bar includes a first conductive layer and a second conductive layer. The first conductive layer is disposed directly adjacent a first insulation layer, wherein the first conductive layer is configured to conduct a first polarity of electrical power to, from, or both the power electronics system. The second conductive layer is disposed directly adjacent the first insulation layer, and is configured to conduct a second polarity of electrical power opposite the first polarity to, from, or both the power electronics system. The first conductive layer comprises a first thickness half a second thickness of the second conductive layer.
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公开(公告)号：US20200158085A1
公开(公告)日：2020-05-21
申请号：US16752626
申请日：2020-01-25
发明人： Robert Gregory Wagoner , Govardhan Ganireddy , Saurabh Shukla , Rajni Kant Burra , Ravisekhar Nadimpalli Raju , Rui Zhou , Rajib Datta , John Leo Bollenbecker
摘要： Power converters for use in wind turbine systems are included. For instance, a wind turbine system can include a full power generator having a stator and a rotor. The generator is configured to provide a low voltage alternating current power on a stator bus of the wind turbine system. The wind turbine system includes a power converter configured to convert the low voltage alternating current power provided on the stator bus to a medium voltage multiphase alternating current output power suitable for provision to the electrical grid. The power converter includes a plurality of conversion modules, each conversion module comprising a plurality of bridge circuits. Each bridge circuit includes a plurality of silicon carbide switching devices coupled in series. Each conversion module is configured to provide a single phase of the medium voltage multiphase alternating current output power on a line bus of the wind turbine system.
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公开(公告)号：US10411473B2
公开(公告)日：2019-09-10
申请号：US15399001
申请日：2017-01-05
发明人： Robert Gregory Wagoner , Govardhan Ganireddy , Saurabh Shukla , Rajni Kant Burra , Ravisekhar Nadimpalli Raju , Rui Zhou , Rajib Datta , John Leo Bollenbecker
摘要： Power converters for use in energy systems are included. For instance, an energy system can include an input power source configured to provide a low voltage direct current power. The energy system can include a power converter configured to convert the low voltage direct current power provided by the input power source to a medium voltage multiphase alternating current output power suitable for provision to an alternating current power system. The power converter can include a plurality conversion modules. Each conversion module includes a plurality of bridge circuits. Each bridge circuit includes a plurality of silicon carbide switching devices coupled in series. Each conversion module is configured to provide a single phase of the medium voltage multiphase alternating current output power on a line bus of the energy system.
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公开(公告)号：US20190173419A1
公开(公告)日：2019-06-06
申请号：US15831871
申请日：2017-12-05
发明人： Min Yan , Ibrahima Ndiaye , Xu She , Rajib Datta
摘要： A power generation architecture includes a plurality of photovoltaic blocks and a medium voltage direct current MVDC electrical power collector. Each photovoltaic (PV) block includes a plurality of PV groups and a combiner. Each plurality of PV groups includes a plurality of PV strings and a DC to DC power converter. Each PV string is operable to output low voltage, DC electrical power. The DC to DC power converter is operable to convert the low voltage, DC electrical power to medium voltage, DC electrical power. The combiner is operable to combine the medium voltage DC electrical power of the DC to DC power converters to produce a block output. The MVDC collector is operable to combine each block output.
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公开(公告)号：US20180187652A1
公开(公告)日：2018-07-05
申请号：US15399067
申请日：2017-01-05
发明人： Robert Gregory Wagoner , Govardhan Ganireddy , Saurabh Shukla , Rajni Kant Burra , Ravisekhar Nadimpalli Raju , Rui Zhou , Rajib Datta , John Leo Bollenbecker
CPC分类号： F03D9/255 , F03D9/25 , H02M5/4585 , H02M2001/0077 , Y02B70/1483 , Y02E10/725 , Y02E10/76
摘要： Power converters for use in wind turbine systems are included. For instance, a wind turbine system can include a full power generator having a stator and a rotor. The generator is configured to provide a low voltage alternating current power on a stator bus of the wind turbine system. The wind turbine system includes a power converter configured to convert the low voltage alternating current power provided on the stator bus to a medium voltage multiphase alternating current output power suitable for provision to the electrical grid. The power converter includes a plurality of conversion modules, each conversion module comprising a plurality of bridge circuits. Each bridge circuit includes a plurality of silicon carbide switching devices coupled in series. Each conversion module is configured to provide a single phase of the medium voltage multiphase alternating current output power on a line bus of the wind turbine system.
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公开(公告)号：US09559611B2
公开(公告)日：2017-01-31
申请号：US13629882
申请日：2012-09-28
CPC分类号： H02M7/5152 , H02M3/3376 , H02M7/487 , H02M7/537 , H02M7/53871 , H02M7/7575 , H02M2007/4835 , Y02E60/60
摘要： A power converter is presented. The power converter includes at least one leg, the at least one leg includes a first string, where the first string includes a plurality of controllable semiconductor switches, a first connecting node, and a second connecting node, and where the first string is operatively coupled across a first bus and a second bus. Furthermore, the at least one leg includes a second string operatively coupled to the first string via the first connecting node and the second connecting node, where the second string includes a plurality of switching units. A method for power conversion is also presented.
摘要翻译： 介绍了一种电源转换器。 所述功率转换器包括至少一个支路，所述至少一个支路包括第一串，其中所述第一串包括多个可控半导体开关，第一连接节点和第二连接节点，并且其中所述第一串可操作地耦合 穿过第一班巴士和第二班车。 此外，所述至少一个支腿包括经由第一连接节点和第二连接节点可操作地耦合到第一串的第二串，其中第二串包括多个开关单元。 还提出了一种电源转换方法。
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公开(公告)号：US12009742B1
公开(公告)日：2024-06-11
申请号：US18349245
申请日：2023-07-10
发明人： Hridya Ittamveettil , Kum Kang Huh , Vandana Prabhakar Rallabandi , Di Pan , Rajib Datta , Mohamed Osama
CPC分类号： H02M1/325 , B64D27/24 , H02J2310/44
摘要： An electric power conversion system comprising: an alternating current (AC) source comprising a plurality of AC terminals for conducting AC power; a voltage source electrically coupled to the AC terminals; and a controller operably coupled to the voltage source, the controller being configured to: operate the voltage source to apply a fault reducing voltage at the AC terminals that reduces an AC line-to-line fault current (If).
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公开(公告)号：US20230389241A1
公开(公告)日：2023-11-30
申请号：US18081770
申请日：2022-12-15
发明人： Sanjay Vijayaraghavan , Libing Wang , Han Xiong , Kum Kang Huh , Di Pan , Mark Edward Dame , Rajib Datta , Alankrita Singh
CPC分类号： H05K7/20927 , H05K5/0217
摘要： A power converter assembly includes a housing, a cold plate in the housing, and a set of power converter components on the cold plate. The cold plate is configured to receive a coolant. A first medium in the housing surrounds the cold plate and components. An expandable heat transfer structure is attached to one of the cold plate and the housing.
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公开(公告)号：US20200088167A1
公开(公告)日：2020-03-19
申请号：US16470205
申请日：2016-12-16
发明人： Govardhan Ganireddy , Rajib Datta
摘要： A wind farm is presented. The wind farm includes a plurality of wind turbine stations, where each wind turbine station includes a wind turbine and a generator sub-system. The generator sub-system includes a doubly-fed induction generator configured to generate an alternating current voltage and a wind turbine station power converter. The wind farm further includes a power collection sub-system that includes a power bus and a sub-station power converter. The wind farm also includes a control system configured to determine a wind speed metric, estimate a corresponding frequency metric, calculate a desirable frequency based on the wind speed metric and frequency compensation ranges of the wind turbine station power converters, and generate and communicate control commands to the sub-station power converter based on the desirable frequency to allow the sub-station power converter to update a line frequency of a power bus voltage based on the desirable frequency.
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公开(公告)号：US20190343019A1
公开(公告)日：2019-11-07
申请号：US15968284
申请日：2018-05-01
发明人： Maja Harfman Todorovic , Philip Michael Cioffi , Xu She , Gary Dwayne Mandrusiak , Rajib Datta , Michael Joseph Schutten
摘要： A device for cooling an electronic component includes a substrate having a component mounting surface and a fluid flow surface recessed relative to the component mounting surface. The device also includes an inlet orifice positioned proximate a first end of the fluid flow surface and an outlet orifice positioned proximate a second end of the fluid flow surface. A pattern of surface features is arranged on the fluid flow surface. The pattern of surface features is configured to entrain a coolant flowing across the fluid flow surface and redirect the coolant upward and away from the fluid flow surface.
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