US 12,316,263 B2
Method and device for operating an electric machine
Sebastian Paulus, Esslingen am Neckar (DE); Michele Hirsch, Esslingen (DE); and Thomas Zeltwanger, Ingersheim (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 18/257,388
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Dec. 1, 2021, PCT No. PCT/EP2021/083746
§ 371(c)(1), (2) Date Jun. 14, 2023,
PCT Pub. No. WO2022/128471, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 10 2020 215 973.4 (DE), filed on Dec. 16, 2020.
Prior Publication US 2024/0022203 A1, Jan. 18, 2024
Int. Cl. H02P 29/50 (2016.01); H02P 27/08 (2006.01)
CPC H02P 29/50 (2016.02) [H02P 27/08 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for operating an electric machine (2), comprising the following steps:
determining a harmonic manipulated variable with respect to a harmonic of a predetermined frequency occurring during the energization of the electric machine (2); and
energizing the electric machine (2) using the determined harmonic manipulated variable by means of a pulse width modulation method;
wherein, for each period of the pulse width modulation method, the harmonic manipulated variable is determined for both a switch-on operation and a switch-off operation.