两种PWM调制方式对无刷直流电机转矩脉动的影响研究  

The Effects of Two PWM Modulations on the Torque Ripples in a Brushless DC Motor System

作　　者：赵鸿宇 陆豪[1] 王鑫[1] 程向丽[1] 田家义 Zhao Hong-Yu;Lu Hao;Wang Xin;Cheng Xiang-Li;Tian Jia-Yi(Beijing Institute of Precision Mechatronics and Controls,Beijing,100076)

机构地区：[1]北京精密机电控制设备研究所,北京100076

出　　处：《导弹与航天运载技术》2021年第4期70-75,共6页Missiles and Space Vehicles

摘　　要：详细分析了在发电状态下,双斩调制与单斩调制模式对无刷直流电机转矩脉动的影响。通过应用电机的电磁转矩公式来测算并比较两种调制模式间存在的差异,在双斩调制模式下电机正反向运行的转矩脉动相同,中心控制系统稳定性较强;在单斩调制模式下,转动脉动较大,中心控制系统的稳定性相对较弱。最后通过仿真和实验验证了理论计算的正确性。The effects of double chopping modulation and single chopping modulation on the torque ripples in a brushless DC motor system is analyzed.The electromagnetic torque formula is used to calculate and compare the differences of the two modulation modes,demonstrating that,with the double chopping modulation,the torque fluctuation in the forward direction is same as the backward and the control system runs smoothly,while with the single chopping method,the torque fluctuation is much bigger,leading to the running smoothness dirrupted.The correctness of the theoretical calculation is verified by the simulation and experiments.

关 键 词：无刷直流电机 调制方式 转矩脉动 

分 类 号：TM921[电气工程—电力电子与电力传动]