基于Buck变换器的无刷直流电机转矩控制仿真  

Torque control simulation of Brushless DC motor based on Buck converter

作　　者：张巍 李刚[1,2] 奚培锋 Zhang Wei;Li Gang;Xi Peifeng(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Key Laboratory of Smart Grid Demand Response,Shanghai 200063,China)

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]上海市智能电网需求响应重点实验室,上海200063

出　　处：《电子测量技术》2019年第10期67-72,共6页Electronic Measurement Technology

基　　金：上海市人保局人才专项(2017116);上海市科委计划项目(18DZ1203502)资助

摘　　要：无刷直流电动机(BLDCM)存在转矩脉动的突出缺点,提出了一种基于直流环节电压控制和模糊PID控制器的新型混合控制策略,以抑制无刷直流电机的转矩脉。电路拓扑包含功率因数校正降压转换器和逆变器。降压转换器通过控制直流电路电压来降低换向转矩脉动,使用模糊PID控制器和脉冲宽度调制(PWM)技术的逆变器在导通区域提供适当的电流。Buck变换器降低了通过控制直流环节电压换向转矩脉动,逆变器使用模糊PID和PWM技术提供导通区域的电流。该方法能够消除传导区转矩脉动,削弱换相区转矩脉动,仿真结果表明,该策略具有功率因数校正功能,可有效抑制转矩脉动,提升电机运行的鲁棒性。The brushless DC motor(BLDCM)has the outstanding shortcomings of torque ripple.A new hybrid control strategy based on DC link voltage control and fuzzy PID controller is proposed to suppress the torque pulse of the brushless DC motor.The circuit topology contains power.Factor corrected buck converter and inverter.The buck converter reduces commutation torque ripple by controlling the DC circuit voltage,and an inverter using a fuzzy PID controller and pulse width modulation(PWM)technology provides the appropriate current in the conduction region. The Buck converter reduces the commutation torque ripple by controlling the DC link voltage.The inverter uses the fuzzy PID and PWM technology to provide the current in the conduction region.This method can eliminate the torque ripple in the conduction region and weaken the torque ripple in the commutation region.The simulation results show that the strategy has a power factor correction function,which can effectively suppress torque ripple.Improve the robustness of motor operation.

关 键 词：无刷直流电机 转矩脉动 BUCK电路 模糊PID 

分 类 号：TN710[电子电信—电路与系统]