A Self-learning Method for Detection Voltage and Detection Time of the Initial Position of Permanent Magnet Synchronous Motor Rotor
The initial position of the rotor of permanent magnet synchronous motor affects the control accura-cy and efficiency of the system control.The self-learning of the initial position of the rotor of permanent mag-net synchronous motor essentially uses the saturation characteristics of the motor,and the technology fre-quently used is high frequency signal injection with constant pulse width.The technical problem to be solved in this paper is to provide a self-learning method for detection voltage and detection time of the initial position of the permanent magnet synchronous motor according to its physical characteristics.The method can quickly and effectively adapt a reasonable injection signal for different types of permanent magnet synchronous motor to avoid excessive initial position detection deviation due to unsaturation of the motor,or excessive detection voltage resulting in over-current fault.
permanent magnet synchronous motorrotor initial positionhigh frequency signal injectiondetection voltagedetection time
万方数据
维普
