摘要
A dynamical dq model is proposed for a linear flux-switching permanent magnet（LFSPM） machine which is suitable for high-precision control applications.The operation principle of the prototype machine is analyzed using the finite element method（FEM）,and the parameters,such as the back electromotive force（EMF） and the phase flux linkage,are calculated.The calculated and measured results reveal that the back EMF and the flux linkage are essentially sinusoidal,and the variation of the phase flux linkage profile of the LFSPM machine is similar to that of the linear surface permanent magnet（LSPM） machine.Based on this,a dynamical dq model and a simulation control model are proposed.The simulation results are compared with the test results obtained from a DSP-based control platform,which verifies that the model is correct and effective.Moreover,the model can be used for design optimization and control development.
提出了一种适用于精密控制的新型直线磁通切换永磁(LFSPM) 电机的动态dq数学模型.通过采用有限元法对LFSPM原型机进行数值仿真,分析该电机的运行原理并计算其反电动势、磁链等电磁参量.仿真和测量表明,该电机的反电动势和磁链均按正弦规律变化,并且在运行时具有与直线表面永磁电机(LSPM) 相似的磁链变化规律.在此基础上,提出了该电机的动态dq数学模型,建立了电机的控制仿真模型.仿真结果与在基于DSP控制实验平台上测得的结果进行比较,验证了所建数学模型的正确性和有效性.该模型可用于该类电机的设计优化和控制性能方面的研究.
基金
The National Natural Science Foundation of China (No.41076054)
