Invention Publication
- Patent Title: DETERMINATIONS OF STATIC LOAD TORQUE AT STANDSTILL
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Application No.: EP22306447.8Application Date: 2022-09-29
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Publication No.: EP4346087A1Publication Date: 2024-04-03
- Inventor: COMBES, Pascal , KOTEICH, Mohamad
- Applicant: Schneider Toshiba Inverter Europe SAS
- Applicant Address: FR 27120 Pacy-sur-Eure 33, rue André Blanchet
- Agency: Plasseraud IP
- Main IPC: H02P21/14
- IPC: H02P21/14 ; H02P25/022
Abstract:
Examples include a method for determining a static load torque at standstill applied to a salient pole synchronous motor. The method comprises fixing a first non-zero torque-producing current component and controlling motor speed using a speed loop regulation of a first regulated component to reach a first zero motor speed steady state corresponding to the fixed first non-zero current component, the motor being subjected to the specific static load torque. The method further comprises controlling motor speed using a speed loop regulation of a second regulated component to reach a second zero motor speed steady state corresponding to a fixed second non-zero torque-producing current component, the motor being subjected to the specific static load torque, the first non-zero current component and the second non-zero current component corresponding to different values. The load torque is estimated as a function of components of the first and second zero motor speed steady states.
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