Position Sensorless Control of Synchronous Reluctance Motor Based on High Frequency Signal Injection
Aiming at the nonlinear characteristics of synchronous reluctance motor(SynRM)caused by electromag-netic saturation and cross coupling of stator inductance,a position sensorless control method combining recursive least square method and pulse vibration high frequency current signal injection was proposed.The principle is to inject high fre-quency sinusoidal current signals with fixed amplitude into the direct axis of synchronous reluctance motor observation co-ordinate system,and extract voltage signals containing rotor position information from the quadrature axis.The recursive least square method with forgetting factor is used to realize the online identification of the motor resistance and inductance parameters.The position sensorless control of motor is realized by proper signal processing method.The simulation and prototype experiments are carried out to verify the accuracy and practicability of the proposed method.
synchronous reluctance motorspulsating high frequency signal injectionposition sensorless controlpa-rameter identification
万方数据
维普
