【摘要】 针对开关磁阻电机(SRM)转矩脉动抑制进行研究。首先,以1台3kW、三相、12/8极SRM为样机,利用二维有限元进行分析计算,在获取静态特性基础上,完成SRM样机的非线性建模。其次,针对SRM直接转矩控制(DTC),提出一种改进型SRM直接转矩控制策略,通过在换相区间合理地增加空间电压矢量,有效地改善转矩失控现象。最后,分别针对基本型DTC、传统CCC方式、改进型DTC,借助Matlab Simulink平台完成仿真分析。对比结果证实提出的改进型DTC策略对SRM转矩脉动抑制的有效性与优越性。更多还原

【Abstract】 Torque ripple suppression of switched reluctance motor(SRM)is studied in this paper.Firstly,a three-phase,12/8pole,3kW SRM is selected as the prototype.Two-dimensional finite element is used to analyze and calculate the prototype of SRM.Based on the gained static characteristics,nonlinear modeling of SRM is completed.In view of direct torque control(DTC)of SRM,an improved DTC method is proposed,by adding some space voltage vectors in commutation interval reasonably,so the uncontrollable phenomenon of torque can be improved to some extent.In the end,respectively for basic DTC,conventional CCC and the improved DTC,the simulations and necessary analysis are completed in Matlab Simulink platform.The simulation result verifies the validity and superiority of the proposed DTC method for torque ripple suppression of SRM.更多还原