并列式混合励磁磁通切换型电机及其电流矢量控制策略研究

为解决永磁磁通切换式电机磁场调节困难的问题,研究了一种新型并列式混合励磁磁通切换型(parallel hybridexcited flux-switching,PHEFS)电机,该电机继承了永磁磁通切换电机功率密度高、反电势正弦等优势,且具有较强的对称调磁能力。结合磁路仿真对该电机电感特性和弱磁性能进行了理论分析,建立了PHEFS电机的数学模型,提出了id 0最大转矩铜耗比电流矢量控制策略,通过对励磁电流和电枢电流的合理分配,在保证静态特性的同时,达到最大转矩铜耗比,以提高电机的运行效率。原理样机的实验结果证明了该电机良好的调磁性能及所提算法的合理性与有效性。

Research on Hybrid-excited Flux-switching Machine and the Current Vector Control Strategy

As a solution to the magnetic field regulation problem in flux-switching permanent magnet motors,this paper presents a novel parallel hybrid excited flux-switching machine,which takes on high power density,intrinsic sinusoidal back EMF,and good field regulation ability.Based on field simulation,this paper made detailed analysis on the inductance characteristics and the field-weakening performance established the mathematical model and brought out a new current vector control strategy.The results show that the strategy achieved good static characteristics as well as maximum torque/copper loss ratio.A principle prototype was built to validate its excellent field regulation performance as well as the effectiveness of the presented control strategy.