US 12,445,073 B2
Method for controlling a multiphase voltage signal in a closed-loop manner, open-loop control device, drive system and motor vehicle
Silko Feustel, Munich (DE); Daniel Glose, Munich (DE); and Jovan Knezevic, Munich (DE)
Assigned to Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
Appl. No. 18/558,557
Filed by Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
PCT Filed Jun. 8, 2022, PCT No. PCT/EP2022/065480
§ 371(c)(1), (2) Date Nov. 2, 2023,
PCT Pub. No. WO2023/274670, PCT Pub. Date Jan. 5, 2023.
Claims priority of application No. 10 2021 117 103.2 (DE), filed on Jul. 2, 2021.
Prior Publication US 2024/0146224 A1, May 2, 2024
Int. Cl. H02P 21/05 (2006.01); H02P 21/22 (2016.01); H02P 25/22 (2006.01)
CPC H02P 21/22 (2016.02) [H02P 25/22 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for controlling a multiphase voltage signal which is supplied to at least one phase set of a stator of an electrical machine of a drive system of a motor vehicle, for the purpose of generating a torque-specific rotary magnetic field, the method comprising:
determining a fundamental space vector, representing a fundamental wave of the multiphase voltage signal;
determining at least one harmonic space vector, representing a harmonic wave of the multiphase voltage signal;
adding the fundamental space vector and the at least one harmonic space vector to form a summed space vector;
determining whether the summed space vector exceeds a threshold value; and
limiting the summed space vector, such that a limited summed space vector falls below the threshold value.