降低永磁直流力矩电动机转矩波动的措施  

Method to Decrease Torque Ripple of Permanent Magnet DC Torque Motor

作　　者：汪瑾 胡浩 张曙 李建好[1] WANG Jin;HU Hao;ZHANG Shu;LI Jianhao(No21.Research Institute of CETC,Shanghai 200233)

机构地区：[1]中国电子科技集团公司第21研究所,上海200233

出　　处：《微特电机》2023年第8期64-66,共3页Small & Special Electrical Machines

摘　　要：转矩波动是影响永磁直流力矩电动机输出力矩稳定性和精度的主要因素之一。分析了永磁直流力矩电动机转矩波动产生的机理,主要包括换向和电磁磁阻引起的转矩波动。针对该原因主要采用虚槽、增加换向片数等措施降低转矩波动,对改进样机进行实际测试分析,转矩波动系数指标改善。Torque ripple is one of the main factors affecting the stability and accuracy of output torque of permanent magnet DC torque motor.The mechanism of the torque ripple of the permanent magnet DC torque motor was analyzed,including the tooth groove torque ripple and electromagnetic torque ripple.In order to reduce the torque ripple under the electromagnetic torque ripple,measures such as virtual slots and increasing the number of commutation plates were adopted to reduce torque fluctuations.The actual test and analysis of the improved prototype showed that the torque ripple coefficient index was improved.

关 键 词：永磁直流力矩电动机 换向 虚槽 转矩波动 抑制方法 

分 类 号：TM351[电气工程—电机] TM359.6