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公开(公告)号：US20230130278A1
公开(公告)日：2023-04-27
申请号：US17507866
申请日：2021-10-22
发明人： Kum Kang Huh , Rajib Datta , Vandana Prabhakar Rallabandi , John Russell Yagielski , Mohamed Osama
IPC分类号： H02M7/5395 , H02P27/08 , H02P25/22 , H02M1/44 , B64D27/12
摘要： A power system including a power converter system and an electric machine is provided. In one aspect, the power converter system has first and second switching elements. The electric machine includes a first multiphase winding electrically coupled with the first switching elements and a second multiphase winding electrically coupled with the second switching elements. The first and second multiphase windings are arranged and configured to operate electrically opposite in phase with respect to one another. One or more processors control the first switching elements to generate first pulse width modulated (PWM) signals based on received voltage commands to render a first common mode signal and also control the second switching elements to generate second PWM signals based on received voltage commands to render a second common mode signal. The rendered first and second common mode signals have the same or similar waveform with opposite polarity with respect to one another.
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公开(公告)号：US20220258867A1
公开(公告)日：2022-08-18
申请号：US17738165
申请日：2022-05-06
发明人： Rajib Datta , Vishnu Mahadeva Iyer , Mohamed Osama , Kum Kang Huh , Vandana Prabhakar Rallabandi
摘要： An electric power system for a vehicle includes at least one electric machine, one or more power rectifiers, and a plurality of DC channels. The at least one electric machine includes a plurality of tooth-wound multi-phase windings that are substantially magnetically decoupled, and the at least one electric machine is mechanically balanced even if one of the plurality of windings is de-energized. The one or more power rectifiers are configured to produce rectified power from the power generated by the at least one electric machine. The plurality of DC channels are formed after the at least one power rectifier and are configured to provide DC power to one or more loads within a vehicle.
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公开(公告)号：US11325714B2
公开(公告)日：2022-05-10
申请号：US16924785
申请日：2020-07-09
发明人： Rajib Datta , Vishnu Mahadeva Iyer , Mohamed Osama , Kum Kang Huh , Vandana Prabhakar Rallabandi
摘要： An electric power system for a vehicle includes at least one electric machine, one or more power rectifiers, and a plurality of DC channels. The at least one electric machine includes a plurality of tooth-wound multi-phase windings that are substantially magnetically decoupled, and the at least one electric machine is mechanically balanced even if one of the plurality of windings is de-energized. The one or more power rectifiers are configured to produce rectified power from the power generated by the at least one electric machine. The plurality of DC channels are formed after the at least one power rectifier and are configured to provide DC power to one or more loads within a vehicle.
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公开(公告)号：US20220069672A1
公开(公告)日：2022-03-03
申请号：US17390009
申请日：2021-07-30
发明人： Joseph John Zierer , Brian Magann Rush , Karthik K. Bodla , Andrew Thomas Cross , Vandana Prabhakar Rallabandi , Konrad Roman Weeber , Anoop Kumar Jassal
摘要： An electric motor may include a stator assembly comprising a stator housing, and one or more rotors coupled to the stator by a rotor shaft assembly. The stator housing may include a cooling structure that has a plurality of cooling body portions and a plurality of cooling conduits defined by the plurality of cooling body portions. A method of forming a stator housing for an electric machine may include additively manufacturing a stator housing that includes a cooling structure defining a fluid domain, coupling a working fluid source to the stator housing and introducing a working fluid into the fluid domain defined by the cooling structure, and sealing the cooling structure with the working fluid contained within the fluid domain of the cooling structure. A method of cooling an electric machine may include heating the working fluid in the fluid domain and flowing the working fluid through the fluid domain, and transferring heat from the cooling structure to a cooling fluid flowing along one or more cooling surfaces contacting a surface of the electric machine.
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公开(公告)号：US20220069654A1
公开(公告)日：2022-03-03
申请号：US17007003
申请日：2020-08-31
发明人： Karthik K. Bodla , Naveenan Thiagarajan , Mohamed Osama , John Russell Yagielski , David Allan Torrey , Vandana Prabhakar Rallabandi
摘要： An electric machine can include a stator core having a plurality of core teeth that define a plurality of core slots in a surface thereof. A winding can be housed at least partially in the core slots. The winding can include a tube defining a channel through at least a portion thereof and one or more wires disposed along a surface of the tube that is opposite the channel. A cooling system can be operably coupled with the channel and configured to move a cooling fluid through the channel.
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公开(公告)号：US20220009643A1
公开(公告)日：2022-01-13
申请号：US16924785
申请日：2020-07-09
发明人： Rajib Datta , Vishnu Mahadeva Iyer , Mohamed Osama , Kum Kang Huh , Vandana Prabhakar Rallabandi
摘要： An electric power system for a vehicle includes at least one electric machine, one or more power rectifiers, and a plurality of DC channels. The at least one electric machine includes a plurality of tooth-wound multi-phase windings that are substantially magnetically decoupled, and the at least one electric machine is mechanically balanced even if one of the plurality of windings is de-energized. The one or more power rectifiers are configured to produce rectified power from the power generated by the at least one electric machine. The plurality of DC channels are formed after the at least one power rectifier and are configured to provide DC power to one or more loads within a vehicle.
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