公开(公告)号：US20220294376A1

公开(公告)日：2022-09-15

申请号：US17195727

申请日：2021-03-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Muhammad H. ALVI ,  Alireza FATEMI ,  Suresh GOPALAKRISHNAN ,  Chandra S. NAMUDURI

IPC: H02P21/10 ,  H02P21/16 ,  H02P21/18 ,  H02P21/22 ,  H02P27/12

Abstract: An electric machine disposed within a housing includes a stator, a rotor, and one or more point field detectors. The stator receives current from an inverter. The rotor is connected to and rotating a shaft based on a magnetic field generated by the stator. The one or more point field detectors are configured to detect leakage flux within the housing. The stator, the rotor and the one or more point field detectors are disposed within the housing.

公开(公告)号：US20220201845A1

公开(公告)日：2022-06-23

申请号：US17132242

申请日：2020-12-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Rashmi PRASAD ,  Chandra S. NAMUDURI ,  Muhammad H. ALVI

IPC: H05K1/02 ,  H05K1/18 ,  H05K1/14 ,  H02P27/06

Abstract: A bi-directional solid state switch includes: a first bus bar; a second bus bar; a first solid state switch implemented on a first printed circuit board (PCB), the first solid state switch including: a first control terminal; a first terminal electrically connected to the first bus bar; and a second terminal; and a second solid state switch implemented on a second PCB, the second solid state switch including: a second control terminal; a third terminal electrically connected to the second terminal of the first solid state switch; and a fourth terminal electrically connected to the second bus bar.

公开(公告)号：US20220310481A1

公开(公告)日：2022-09-29

申请号：US17215883

申请日：2021-03-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Muhammad H. ALVI ,  Ming LIU ,  Rashmi PRASAD ,  Anthony M. COPPOLA

IPC: H01L23/473 ,  H01L25/065 ,  H05K7/20

Abstract: A power module is provided and includes first stack, second stack, and third stacks of layers, a heat pipe, and at least one cold plate or heat sink. The third stack of layers is disposed between the first stack of layers and the second stack of layers and includes a first semiconductor die, a second semiconductor die and a center spacer layer disposed between the first semiconductor die and the second semiconductor die. The heat pipe extends at least partially into the center spacer layer. The at least one cold plate or heat sink receives thermal energy from the first stack of layers and the second stack of layers. The second stack of layers, the third stack of layers, the heat pipe and the at least one cold plate or heat sink facilitate dual sided cooling of each of the first semiconductor die and the second semiconductor die.

公开(公告)号：US20220286072A1

公开(公告)日：2022-09-08

申请号：US17191050

申请日：2021-03-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Suresh GOPALAKRISHNAN ,  Chandra S. NAMUDURI ,  Lei HAO ,  Muhammad H. ALVI ,  Alireza FATEMI

IPC: H02P21/22 ,  H02P27/08 ,  H02M7/5387

Abstract: A motor control system includes: a d-q target module configured to, based on a target torque of an electric motor, determine a first target d-axis current and a first target q-axis current; an offset module configured to, based on a capacitor current through capacitors connected across phases of the electric motor, determine a d-axis current offset and a q-axis current offset; an adder module configured to determine a second target d-axis current based on a sum of the first target d-axis current and the d-axis current offset and to determine a second target q-axis current based on a sum of the first target q-axis current and the q-axis current offset; and a driver module configured to, based on the second target d-axis current and the second target q-axis current, switch switches of a current source inverter (CSI) module configured to apply power to the phases of the electric motor.