CAJ | 학술논문

针对开关磁阻电机转矩脉动过大的问题，研究了四电平拓扑主电路下的直接瞬时转矩控制，分析了滞环控制策略，并选取合适的瞬时转矩控制滞环，再加入PI控制器，构成一个转速、转矩双闭环的开关磁阻电机调速系统。相对于传统不对称半桥功率变换电路驱动系统，四电平功率变换电路能够改善开关磁阻电机固有转矩脉动，加快励磁电流上升和下降时间，提高系统的快速性。系统仿真结果表明该系统的脉动抑制效果好、效率高、动态性能好。
침대개관자조전궤전구맥동과대적문제，연구료사전평탁복주전로하적직접순시전구공제，분석료체배공제책략，병선취합괄적순시전구공제체배，재가입PI공제기，구성일개전속、전구쌍폐배적개관자조전궤조속계통。상대우전통불대칭반교공솔변환전로구동계통，사전평공솔변환전로능구개선개관자조전궤고유전구맥동，가쾌려자전류상승화하강시간，제고계통적쾌속성。계통방진결과표명해계통적맥동억제효과호、효솔고、동태성능호。
In view of the switched reluctance motor ( SRM ) problems of large torque ripple, the direct instantaneous torque control( DITC) under the four-level main circuit was researched, the hysteresis control strategy was analyzed and chose the appropriate instantaneous torque control hysteresis. Adding the PI controller, to constitute a rotational speed, torque—the double closed loop speed regulation system of switched reluctance motor. Compared with traditional asymmetric half bridge power conversion circuit drive system, the four-level power conversion circuit could improve switched reluctance motor torque ripple, to speed up the excitation current rise and fall time, and improve the rapidity of the system. The system simulation experimental results showed that the system’s ripple suppression effect was good, the system had high efficiency and good dynamic performance.