公开(公告)号：US12212254B1

公开(公告)日：2025-01-28

申请号：US18915421

申请日：2024-10-15

Applicant: Shandong University

Inventor： Wenliang Zhao ,  Ning Wang ,  Chengwu Diao ,  Gefei Zhu ,  Xiuhe Wang

IPC: H02P21/02 ,  H02P21/00 ,  H02P21/22

Abstract: The provided is flux-weakening control method and system for the salient pole offset permanent magnet synchronous motor. The method includes determining the given value of electromagnetic torque according to the actual speed and the given target speed; calculating the current trajectories of MTPA and MTPV in dq coordinate system; obtaining the d′q′ coordinate system by rotating the coordinate system, and calculating the current trajectory of MTPA and MTPV in the d′q′ coordinate system to obtain the characteristic current; judging whether it is necessary to turn on the flux-weakening control, and outputting the direct axis current compensation when it turns on; judging the flux-weakening area of the motor; and generating the space vector pulse width modulation signal to drive the motor to realize the full speed range flux-weakening speed regulation of the salient pole offset permanent magnet synchronous motor.