-
公开(公告)号：US20230421075A1
公开(公告)日：2023-12-28
申请号：US18038348
申请日：2021-11-10
Applicant: Sanchit MISHRA , Cummins Inc.
Inventor： Sanchit Mishra , Akm Arafat , Michael Hays , Dakshina Subbarao Murthy-Bellur , Minyu Cai
IPC: H02M7/5387 , H02P27/06
CPC classification number: H02M7/5387 , H02P27/06 , H02M1/44
Abstract: Inverter apparatuses and systems with a DC energy source are disclosed, in which a planar and radially symmetrical positive DC busbar is coupled with a positive terminal of the DC energy source and a planar and radially symmetrical negative DC busbar is coupled with a negative terminal of the DC energy source. The inverter has a plurality of switches such that the plurality of switches are positioned radially symmetrically with respect to a center of the DC busbars. Each switch is coupled with either the positive DC busbar or the negative DC busbar on a first end and one of a plurality of AC busbars on a second end. A single toroidal filtering core is located at the center of the DC busbars and is coupled with the plurality of AC busbars.
-
公开(公告)号：US20230412097A1
公开(公告)日：2023-12-21
申请号：US18034830
申请日：2021-10-15
Applicant: Cummins Inc.
Inventor： Akm Arafat , Dakshina Murthy-Bellur , Santhosh Krishnamoorthi , Shankari Bangalore Kalyanam Ramnath
Abstract: A system and method for controlling a six-phase machine include generating a plurality of control vectors for the six-phase machine. The six-phase machine is configured as a combination of a first three-phase machine and a second three-phase machine. Each of the plurality of control vectors is generated by combining two phase vectors from the six-phase machine, where one phase vector is selected from the first three-phase machine and another phase vector is selected from the second three-phase machine. The system and method also include implementing a control method based on the plurality of control vectors to control the operation of the six-phase machine.
-
公开(公告)号：US20230387789A1
公开(公告)日：2023-11-30
申请号：US18026427
申请日：2021-09-08
Applicant: Cummins Inc.
Inventor： Akm Arafat , Moinul S. Haque , Bradford K. Palmer , Patrick Kaufman
IPC: H02M1/32 , H02M7/5387 , H02P21/22 , B60L50/60
CPC classification number: H02M1/325 , H02M7/53871 , H02M1/327 , H02P21/22 , B60L50/60 , B60L2210/40 , B60K6/40
Abstract: An inverter system is provided such that the system includes a direct-current (DC) voltage supply, an inverter, an electric machine such as a motor, and a controller coupled with the inverter. The inverter has four or more legs, each with two switches operating complementary to each other. The controller can determine which three of the four or more legs are selected to operate the inverter and uses a remaining one of the four or more legs to operate the inverter by activating/deactivating certain switches during null vector state.
-
公开(公告)号：US20230344377A1
公开(公告)日：2023-10-26
申请号：US18023148
申请日：2021-09-01
Applicant: CUMMINS INC.
Inventor： Akm Arafat , Bradford K. Palmer , Dakshina S. Murthy-Bellur
IPC: H02P25/22 , H02P29/024
CPC classification number: H02P25/22 , H02P29/0243 , G01R31/343
Abstract: 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.
-
公开(公告)号：US11784596B2
公开(公告)日：2023-10-10
申请号：US17631386
申请日：2020-08-18
Applicant: Cummins Inc.
Inventor： Akm Arafat , Bradford K. Palmer , Dakshina S Murthy-Bellur
IPC: H02P21/00 , H02P25/22 , H02P29/028
CPC classification number: H02P21/50 , H02P25/22 , H02P29/028
Abstract: 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.
-
Patent Agency Ranking
公开(公告)号：US20230278441A1
公开(公告)日：2023-09-07
申请号：US18015457
申请日：2021-07-01
Applicant: Cummins Inc.
Inventor： Oliver D. Wilson , Akm Arafat
CPC classification number: B60L53/24 , B60L55/00 , H02M7/537 , H02J7/02 , B60L2210/40 , B60L2220/58 , B60L2220/54 , H02J2310/48
Abstract: A method and system for bidirectional charging in an electric vehicle include controlling a multi-phase machine in the electric vehicle. In response to determining that a direction of energy flow is from an electric grid to the electric vehicle, the method and system include operating a first set of phases in the multi-phase machine at a grid frequency of the electric grid and connecting the first set of phases in the multi-phase machine to the electric grid. In response to connecting the first set of phases in the multi-phase machine to the electric grid, the method and system include operating a second set of phases in the multi-phase machine, where the second set of phases in the multi-phase machine generates energy via electrical coupling to the first set of phases in the multi-phase machine. The method and system also include providing the energy generated by the second set of phases in the multi-phase machine to charge an energy source of the electric vehicle.
-
公开(公告)号：US12017544B2
公开(公告)日：2024-06-25
申请号：US17765516
申请日：2019-11-22
Applicant: Cummins Inc. , Akm Arafat , Santhosh Krishnamoorthi , Dakshina Subbarao Murthy-Bellur
Inventor： Akm Arafat , Santhosh Krishnamoorthi , Dakshina Subbarao Murthy-Bellur
CPC classification number: B60L3/0061 , B60L3/0092 , H02M1/325
Abstract: A method and system of operating a multi-phase electric machine include operating an inverter to control the multi-phase machine. The inverter has a plurality of inverter legs including an auxiliary inverter leg. Each of the plurality of inverter legs has at least one switch device. The multi-phase machine has a plurality of phases in which each phase is controlled by a respective inverter leg of the inverter. The method and system also include determining whether a phase of the multi-phase machine is experiencing a partial phase loss, for example, by injecting a signal into the phases and analyzing the frequency response. In response to determining that a phase of the multi-phase machine is experiencing a partial phase loss, the method and system include utilizing the auxiliary inverter leg to supplement energy to the phase experiencing the partial phase loss to continue operating the multi-phase machine.
-
公开(公告)号：US11979103B2
公开(公告)日：2024-05-07
申请号：US17915450
申请日：2021-02-08
Applicant: Cummins Inc.
Inventor： Akm Arafat , Bradford K. O. Palmer
CPC classification number: H02P25/20
Abstract: A method and system of performing a pole switching operation in a multi-phase machine include operating the multi-phase machine in a first configuration with a first number of poles, where the first number of poles is based on a first number of phases in the first configuration and a number of stator slots allocated for each winding in the multi-phase machine. The method and system also include receiving a signal indicating the pole switching operation in the multi-phase machine. In response to receiving the signal, the method and system include operating the multi-phase machine in a second configuration with a second number of poles, where the second number of poles is based on a second number of phases in the second configuration and the number of stator slots allocated for each winding in the multi-phase machine.
-
公开(公告)号：US20240113645A1
公开(公告)日：2024-04-04
申请号：US18274567
申请日：2022-01-14
Applicant: Cummins Inc.
Inventor： Akm Arafat , Oliver Daniel Wilson
IPC: H02P21/05
CPC classification number: H02P21/05
Abstract: A multiphase motor control system and method of operation. Discloses embodiments comprise receiving multiphase reference commands, transforming the multiphase reference commands into corresponding reference symmetrical components, receiving feedback information representative of multiphase drive signals in a motor, transforming the feedback information into corresponding feedback symmetrical components, generating multiphase motor control symmetrical components based on the reference symmetrical components and the feedback symmetrical components, and transforming the multiphase motor control symmetrical components into corresponding multiphase motor drive control signals.
-
公开(公告)号：US20220329188A1
公开(公告)日：2022-10-13
申请号：US17631386
申请日：2020-08-18
Applicant: Cummins Inc.
Inventor： Akm Arafat , Bradford K. Palmer , Dakshina S. Murthy-Bellur
IPC: H02P21/00 , H02P25/22 , H02P29/028
Abstract: 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.
-
-
-
-
-
-
-
-
-
Search Results
23
records
(took 0.023 seconds)
