基于转子磁场定向矢量控制的感应电机改进磁链观测方法

传统的磁链观测方法通常采用低通滤波器取代电压模型的纯积分环节,由于其易于实现,较多应用于工程实践。但其忽略了直流偏置,并随之引入了相位偏差以及幅值上的误差。针对这一现象,提出改进磁链观测的方法,采用高通与低通滤波环节串联的方式,在此基础上推导出相对应的相位及幅值的偏差补偿策略,解决了直流偏置问题。最后通过仿真和试验对所述方法进行有效性和准确性的验证。

Improved Flux Observation Method Based on RotorFieldOriented Vector Control of Induction Motor

Based on voltage mode flux linkage, the traditional method usually used lowpass filter easy to be applied in implement instead of pure integral element. However, this method ignored the DC bias and bringed the deviation in phase and amplitude. To solve this problem, put forward the improved flux observation method. In the base of improved method, deduced the corresponding compensation strategy, solving the problem of DC bias. Simulation and experiments showed the effectiveness of the proposed method owning high practical value.