基于双H桥变换器的无刷直流电机转矩脉动抑制方法  

A Method to Inhibit Torque Ripple of Brushless DC Motor Based on Double H-Bridge Converter

作　　者：李东[1,2] 冯金磊[1] 孔全存[1] 刘桂礼[1,2] 赵双琦[1] LI Dong;FENG Jinlei;KONG Quancun;LIU Guili;ZHAO Shuangqi(School of Instrumentation Science and Opto-Electronics Engineering,Beijing Information Science and Technology University,Beijing 100192,China;Modern Measurement and Control Technology of Ministry of Education Key Laboratory,Beijing Science and Technology University,Beijing 100192,China)

机构地区：[1]北京信息科技大学仪器科学与光电工程学院,北京100192 [2]北京信息科技大学现代测控技术教育部重点实验室,北京100192

出　　处：《电机与控制应用》2018年第7期30-37,共8页Electric machines & control application

基　　金：国家自然科学基金项目(51675054);北京市自然科学基金项目(3172013);北京市教委科技发展计划面上项目(KM201711232005);北京市重点实验室(机电系统测控)开放项目(5221735107)

摘　　要：针对无刷直流电机(BLDCM)的换相转矩脉动问题,提出了一种基于双H桥变换器的BLDCM转矩脉动抑制方法。通过双H桥变换器电路产生补偿或抵消电流,减小非换相相电流的波动,从而达到抑制BLDCM转矩脉动的目的。在MATLAB/Simulink下构建了BLDCM转矩脉动仿真模型并进行对比仿真,与传统PID控制方法相比,该方法非换相相电流波动在高、低速下分别降低了约70%和40%,平衡后的转矩波动降低了约80%。结果表明:所提方法对于BLDCM在高稳定度和高精度要求领域中的应用具有重要价值。Aiming at the problem of commutation torque ripple in brushless DC motor（ BLDCM）,a method to inhibit torque ripple of BLDCM based on double H-bridge converter was proposed. Through the compensating or reducing current generated by the double H-bridge converter circuit,the fluctuation of the non-commutation phase current could be reduced so as to inhibit the torque ripple of the BLDCM. The simulation model of BLDCM was constructed in MATLAB/Simulink and was conducted comparative experiment,compared with the traditional PID control method,the new method＇s current ripple of non-commutation phase decreased about 70% at high speed and40% at low speed,respectively. Meanwhile,the balanced torque ripple decreased about 80%. The results showed that the new method has some practical value.

关 键 词：无刷直流电机 转矩脉动 抑制方法 非换相相电流 双H桥变换器 

分 类 号：TM301.2[电气工程—电机]