摘要
本文针对直接转矩控制中转矩脉动大以及开关频率不恒定的问题,深入分析了感应电动机的定子磁链和转矩的实际变化情况,提出了在低开关频率下抑制转矩脉动的新型方案,仿真结果验证了新方案能够有效减小低速时转矩脉动并降低高速时开关频率。
The torque ripple and variable switching frequency are important points we concerned in Direct Torque Control, hence the actual variations of the flux leakage and torque of induction motor are analyzed thoroughly in this paper. A new scheme with torque ripple reduction in low switching frequency is proposed. The presented simulation results show that the proposed scheme can reduce torque ripple at low speed and switching frequency at high speed effectively.
出处
《变频器世界》
2013年第7期65-68,共4页
The World of Inverters
关键词
直接转矩控制
转矩脉动分析
转矩脉动抑制
低开关频率
Direct torque control Torque ripple analysis Torque ripple reductionLow switching frequency
