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公开(公告)号：US20230344377A1
公开(公告)日：2023-10-26
申请号：US18023148
申请日：2021-09-01
申请人： CUMMINS INC.
IPC分类号： H02P25/22 , H02P29/024
CPC分类号： H02P25/22 , H02P29/0243 , G01R31/343
摘要： A method for operating a processing system to identify faults in an electric machine system including a multiphase machine having plurality of sets of windings; comprising: receiving parameter information representative of electrical operating parameters of the multiple phases of each of the multiple winding sets of the multiphase machine; determining symmetrical components based on the parameter information; comparing the symmetrical components to fault information defining faults of the multiple phases of the multiple winding sets with respect to symmetrical component fault values; identifying faults in one or more of the multiple phases of the multiple winding sets based on the comparison.
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公开(公告)号：US20230412102A1
公开(公告)日：2023-12-21
申请号：US18239915
申请日：2023-08-30
申请人： Cummins Inc.
IPC分类号： H02P21/00 , H02P25/22 , H02P29/028
CPC分类号： H02P21/50 , H02P29/028 , H02P25/22
摘要： A method of controlling a multi-phase electric machine includes implementing a first control method to control the operation of a six-phase machine that is configured as a combination of two three-phase machines. The method also includes determining whether a fault exists in the six-phase machine. In response to determining that the fault exists in the six-phase machine, the method includes implementing a second and different control method to control the operation of the six-phase machine.
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公开(公告)号：US11777437B2
公开(公告)日：2023-10-03
申请号：US17623745
申请日：2020-07-20
申请人： Cummins Inc.
IPC分类号： H02P29/024 , G01R31/34 , H02P25/22
CPC分类号： H02P29/0243 , G01R31/343 , H02P25/22
摘要： A method of operating a multi-phase electric machine includes operating a six-phase machine with six phases that are configured into a first group having a first neutral connection and a second group having a second neutral connection. The method also includes determining whether at least one of the six phases is experiencing a fault. In response to the determining, the method includes combining the first and second neutral connections to form a common neutral connection to continue operating the six-phase machine by using the remaining phase not experiencing the fault.
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公开(公告)号：US12107526B2
公开(公告)日：2024-10-01
申请号：US17923817
申请日：2021-05-05
申请人： Cummins Inc.
发明人： Akm Arafat , Minyu Cai , Dakshina S. Murthy-Bellur
CPC分类号： H02P29/64 , H02P23/0004 , H02P27/08
摘要： A method for operating an electric drive system is provided. For example, a controller retrieves, from memory, a predictive model indicating predictive winding temperatures associated with known negative temperature coefficient (NTC) temperatures, wherein the predictive model is based on historical NTC temperatures and historical winding temperatures, as well as one or more operating parameters. The controller receives current NTC information indicating one or more current NTC readings corresponding to one or more switching devices within the inverter. The controller determines estimated winding temperatures corresponding to the electric machine based on the predictive model and the one or more current NTC readings as well as current operating parameters. The controller provides instructions to adjust inputs to the electric machine based on the estimated winding temperatures.
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公开(公告)号：US20230253873A1
公开(公告)日：2023-08-10
申请号：US18016178
申请日：2021-07-08
申请人： Cummins Inc.
IPC分类号： H02M1/14 , H02M7/5395 , H02P5/74 , B60L53/20 , B60L15/08
CPC分类号： H02M1/14 , B60L15/08 , B60L53/20 , H02M7/5395 , H02P5/74
摘要： An inverter system is provided such that the system includes a direct-current (DC) voltage supply electrically coupled with a DC link, a plurality of inverters, each electrically coupled with the DC link, a plurality of electric machines where each electric machine is electrically coupled with one of the inverters, and a controller coupled with each of the inverters. The controller can control carrier signals of the inverters such that the carrier signals are synchronized and interleaved at an angle (Θ) that is determined based on the waveform type of the carrier signals and the number of inverters in the system.
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公开(公告)号：US20230179138A1
公开(公告)日：2023-06-08
申请号：US17923817
申请日：2021-05-05
申请人： Cummins Inc.
发明人： Akm Arafat , Minyu Cai , Dakshina S. Murthy-Bellur
CPC分类号： H02P29/64 , H02P23/0004 , H02P27/08
摘要： A method for operating an electric drive system is provided. For example, a controller retrieves, from memory, a predictive model indicating predictive winding temperatures associated with known negative temperature coefficient (NTC) temperatures, wherein the predictive model is based on historical NTC temperatures and historical winding temperatures, as well as one or more operating parameters. The controller receives current NTC information indicating one or more current NTC readings corresponding to one or more switching devices within the inverter. The controller determines estimated winding temperatures corresponding to the electric machine based on the predictive model and the one or more current NTC readings as well as current operating parameters. The controller provides instructions to adjust inputs to the electric machine based on the estimated winding temperatures.
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公开(公告)号：US20240107654A1
公开(公告)日：2024-03-28
申请号：US18265049
申请日：2021-12-03
申请人： Cummins Inc.
发明人： Vineet K. Pandey , William B. Fields , Isreal I. Llaguno , Bharadwaj Ramakrishnan , Bradford K.O. Palmer , Jaydeep V. Patel , Michael Hays , Dakshina S. Murthy-Bellur , Amir Tajuddin Tamboli , Rohit Saha
CPC分类号： H05K1/0201 , H05K1/0277 , H05K1/144 , H05K1/181
摘要： A cooling plate assembly for dual-sided cooling, the cooling plate assembly can include a first cooling plate and a second cooling plate. The first cooling plate that has a first cooling plate connector side and a first cooling plate cooling side that is opposite the first cooling plate connector side. The second cooling plate that has a second cooling plate connector side and a second cooling plate cooling side that is opposite the second cooling plate connector side. The second cooling plate is configured to attach to the first cooling plate such that formed between the first cooling plate connector side and the second cooling plate connector side is at least one cooling passage through which a cooling fluid is flowed to transfer heat from both the first cooling plate cooling side and the second cooling plate cooling side to the cooling fluid.
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公开(公告)号：US20230378878A1
公开(公告)日：2023-11-23
申请号：US18031094
申请日：2021-09-29
申请人： Cummins Inc.
发明人： Dakshina S. Murthy-Bellur , Santhosh Krishnamoorthi , Yu Wei , Latif M. Shaikh , Jaroslaw Leonarski , Minyu Cai
IPC分类号： H02M3/335 , H02P27/06 , H02M1/08 , B60R16/033
CPC分类号： H02M3/33569 , H02P27/06 , H02M1/08 , B60R16/033
摘要： A system is provided for flexible power switch gate-drive power supply. The power supply includes a primary stage comprising an inverter and a voltage source, an isolator electrically coupled with outputs of the primary stage and configured to change voltage level, a secondary stage comprising a rectifier and electrically coupled with outputs of the isolator, and a controller electrically coupled with the primary stage and the secondary stage.
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公开(公告)号：US20230364997A1
公开(公告)日：2023-11-16
申请号：US18030607
申请日：2021-09-30
申请人： Cummins Inc.
发明人： Santhosh Krishnamoorthi , Gary L. Parker , Bradford K. Palmer , Dakshina S. Murthy-Bellur , Minyu Cai
IPC分类号： B60L3/00 , H02M7/5387 , H02M1/32 , B60L50/51
CPC分类号： B60L3/003 , H02M7/53871 , H02M1/322 , B60L50/51 , B60L2210/42
摘要： An inverter system is provided such that the system includes a direct-current (DC) voltage supply, an inverter electrically coupled with the DC voltage supply, an electric machine electrically coupled with the inverter, and a controller coupled with the inverter. The inverter has a plurality of legs, each leg including two switches operating complementary to each other, an auxiliary leg having a pair of auxiliary switches, and a resistor coupled parallel to one of the auxiliary switches. A controller is coupled with the inverter and is operative to activate or deactivate the auxiliary leg of the inverter. The controller activates the auxiliary leg to discharge the capacitor or the DC bus through the resistor.
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公开(公告)号：US20230378895A1
公开(公告)日：2023-11-23
申请号：US18030667
申请日：2021-07-12
申请人： Cummins Inc.
IPC分类号： H02P27/06
CPC分类号： H02P27/06
摘要： A power supply for use with an N-phase multiphase machine comprises an inverter, an isolation stage and a rectifier The inverter is configured to be coupled to a DC power supply and includes N machine switch circuits for providing N-phase machine drive signals to the multiphase machine in response to N-phase machine drive commands, and an auxiliary switch circuit for providing an auxiliary AC output in response to auxiliary control commands. The isolation stage coupled to the auxiliary switch circuit and generates an isolated AC output. The rectifier is coupled to the isolation stage to rectify the isolated AC output and provide an auxiliary DC supply output.
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