Research on high frequency injection algorithm of ship dual three-phase permanent magnet synchronous motor
The traditional high-frequency signal injection method is only suitable for permanent magnet synchronous motors with salient pole characteristics,and multiple filters are used in position estimation and current feedback links,result-ing in position estimation and current response delay,affecting the dynamic performance of the system.Aiming at the dual three-phase surface-mounted permanent magnet synchronous motor with insignificant salient pole characteristics,a low-speed control strategy based on high-frequency square-wave voltage injection method is proposed.The high-frequency injec-tion period and the field-oriented control period are separated.In the high-frequency injection period,the high-frequency cur-rent is collected in the station two-phase shafting to obtain the rotor position estimation value,which realizes that the posi-tion estimation and current feedback link do not need to use the filter.Finally,the effectiveness of the control strategy is veri-fied by theoretical analysis and simulation.
double three-phase PMSMsensorless controlhigh frequency square wave injectionsalient effect
万方数据
维普
