Application of High Frequency Signal Injection Method Based on FFT in Permanent Magnet Synchronous Motor
In order to solve the problems of stationary and low-speed,many Therefore scholars have proposed a high-frequency injection scheme.By injecting a known high-frequency signal and extracting the high-frequency component of the current response,variables related to the rotor angle information are obtained,and then the rotor position is solved from it.Traditional high-frequency injection faces the problem of difficult identification of magnetic poles.Therefore,a signal extraction method based on fast Fourier transform(FFT)is proposed,which can obtain rotor position information through Fourier transform,eliminating the need for a large number of filters.
FFThigh-frequency injectionPMSMrotor position extraction
万方数据
维普
