US 12,463,577 B2
Method and system for controlling an inverter for an electric machine
Nomar S. Gonzalez-Santini, Lakeland, FL (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Sep. 14, 2022, as Appl. No. 17/944,399.
Prior Publication US 2024/0088817 A1, Mar. 14, 2024
Int. Cl. H02P 21/34 (2016.01); H02P 21/18 (2016.01); H02P 27/12 (2006.01); H02P 27/14 (2006.01)
CPC H02P 27/12 (2013.01) [H02P 21/18 (2016.02)] 18 Claims
OG exemplary drawing
 
1. A method for controlling an electric power inverter arranged to supply electric power to an electric machine, the method comprising:
determining operation of the electric power inverter in a low output frequency state;
determining a rotational position of the electric machine;
determining a first zero vector modulation control parameter for the electric power inverter when the rotational position of the rotary electric machine is within a first range of rotational positions of the rotary electric machine;
determining a second zero vector modulation control parameter for the electric power inverter when the rotational position of the rotary electric machine is outside of the first range of rotational positions of the rotary electric machine;
operating, via a controller, the electric power inverter in a zero vector modulation (ZVM) mode employing the first zero vector modulation control parameter when the rotational position of the rotary electric machine is within the first range of rotational positions of the rotary electric machine; and
operating, via the controller, the electric power inverter in the ZVM mode employing the second zero vector modulation control parameter when the rotational position of the rotary electric machine is outside of the first range of rotational positions of the rotary electric machine.