Interior Sensorless Minimum Loss Control for Permanent Magnet Synchronous Motors
A sensorless minimum loss control strategy is proposed for interior permanent magnet synchro-nous motor ( IPMSM) . Since the initial rotor flux is not easily to be obtained by the traditional rotor mag-netic chain observer and there is a DC bias problem,an improved nonlinear observer is constructed by the gradient descent method to improve the rotor position identification accuracy. In order to reduce the energy consumption of the control system,a virtual power current compensation controller is constructed by the vir-tual signal injection method to search the optimal regulation current online. The system simulation results show that this strategy can observe the rotor position quickly,and compared with id=0 control and VCCC,the energy consumption is reduced by 4％～24.21％ and 1.33％～9.15％,respectively,under the same working condition,which effectively improves the performance of the control system in terms of energy consumption optimization.
万方数据
维普
