Proposed a new off-line parameter identification method for vector controlled asymmetric single-phase induction motor. According to the mathematical model of asymmetrical single-phase induction motors, symmetry control can be achieved by parameter conversion and symmetrical compensation. The proposed method can effectively eliminate the cause of identification error by the asymmetric magnetic field effect in the no-load test. In order to obtain the effective message in these tests, the phase voltage reconstruction tech-nique, the discrete fast fourier transform (DFFT) and the dead zone compensation were used to process the signals of currents and voltages. The validity, reliability and accuracy of the presented methods were verified by the simulation and the circuit experiments based on SVPWM.%为了实现不对称单相感应电机的矢量控制,给出了一种新的不对称单相感应电机参数辨识方法.依据不对称单相感应电机的数学模型分析,通过参数折算和对称补偿实现对称控制,消除了空载实验所测电机参数受不对称磁场影响而产生的误差.辨识数据采用了母线电压重构和离散快速傅里叶变换(DFFT)技术,并进行了死区补偿,提高了辨识精度.通过基于SVPWM的仿真实验和系统电路实验,证实了方法的正确性和精确性,实现了电机参数的离线辨识.
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