Gm global technology operations llc (20240421747). THERMAL SENSING AND CONTROL OF A TRANSISTOR BOARD
THERMAL SENSING AND CONTROL OF A TRANSISTOR BOARD
Organization Name
gm global technology operations llc
Inventor(s)
Muhammad Hussain Alvi of Troy MI (US)
Cherian A. Idicheria of Novi MI (US)
Brian A. Welchko of Oakland Township MI (US)
THERMAL SENSING AND CONTROL OF A TRANSISTOR BOARD
This abstract first appeared for US patent application 20240421747 titled 'THERMAL SENSING AND CONTROL OF A TRANSISTOR BOARD
Original Abstract Submitted
an electric motor circuit includes a motor controller having a plurality of gate drivers and an inverter configured to receive direct current (dc) power from a source and output alternating current (ac) power to an electric motor. the inverter includes a plurality of transistor elements. each transistor element includes multiple transistors arranged on a transistor board. multiple temperature sensors are configured to monitor a plurality of temperatures on each transistor element. the motor controller is configured to alter a pulse width modulation (pwm) control of a first subset of transistors on a first transistor element in response to a first subset of temperature sensors detecting a temperature exceeding a threshold temperature and a second subset of temperature sensors not detecting a temperature exceeding the threshold.