摘要
针对开关磁阻电机具有转矩脉动大的缺点,依据空间电压矢量下直接瞬时转矩控制的理论,通过分析采用基本电压矢量存在转矩失控现象的原因,提出了一种优化直接转矩控制的新方案。该方案以基本空间电压矢量为基础,通过适时地采用新增空间电压矢量,同时优化转矩滞环控制器的方法,达到提高直接转矩控制性能的目的。为验证方案的有效性和正确性,以一台三相12/8极开关磁阻电机为控制对象,将新方案与传统直接转矩控制的效果进行了比较。结果证明,新方案有效地抑制了转矩失控现象的产生,并在进一步减小转矩脉动上有明显效果,最终将转矩脉动控制在±1N·m以内。
The main disadvantage of the switched reluctance motor is torque ripple. Based on direct instantaneous torque control, the effect of torque ripple was analyzed from the point view of basic space voltage vector. A novel method was proposed for the optimization of the direct controlling torque. It improved the performance of the direct controlling torque by increasing space voltage vector and torque hysteresis - controller. A 12/8 - pole 3 - phase switched reluctance motor was designed to facilitate the verification of the correctness and validity of the proposed method. The simulations of analyzing the direct controlling torque were carried out for the proposed method and the traditional one. The comparison of the results demonstrates that the proposed scheme is valid for restraining uncontrolled torque and further mini- mizing the torque ripple which is no more than 1 N · m.
出处
《电机与控制学报》
EI
CSCD
北大核心
2010年第1期35-40,46,共7页
Electric Machines and Control
基金
国家经贸委"十五"重大技术装备研制项目
电力推进技术研究(JDRo-Z4-01)
关键词
开关磁阻电动机
直接瞬时转矩控制
转矩脉动最小化
空间电压矢量
转矩滞环控制器
switched reluctance motors
direct instantaneous torque control
torque ripple minimization
space voltage vector
torque hysteresis-controller
