基于超高频信号注入的全速范围断电IPMSM位置检测与速度记录方法

For the sensorless interior permanent magnet synchronous motor, this letter proposes a rotor position and speed recording method applied in full-speed range after the main power supply is off. The proposed method injects ultrahigh-frequency (UHF) sinusoidal voltage into the motor windings after the motor is powered off, and then calculates the motor rotor position and speed in real time by detecti...