摘要
针对伺服驱动器中逆变模块工作时会对低压辅助电源线造成严重电磁干扰的问题,对干扰传播的主要路径进行了分析。将复杂的驱动系统进行了简化,在Matlab仿真软件中建立了伺服驱动器的高频共模电路模型;在不同接地条件下,通过一组驱动器机壳和电机机壳,进行了辅助电源电磁干扰测试实验,确定了驱动器中高压侧干扰传播到低压辅助电源的主要干扰回路;基于该干扰传播回路,采取了优化干扰回路的抑制手段,对开关电源中的变压器部分进行了改动,增大了回路阻抗,从而大幅减小了低压线上的干扰。研究结果表明:所建模型准确,且采用的抑制手段能大幅降低辅助电源的线上干扰。
Aiming at the inverter module in the servo drive which causes serious electromagnetic interference on the low-voltage auxiliary power cable,the main interference propagation path was analyzed. The complex drive system was simplified,and the high-frequency commonmode circuit model of servo driver was established in Matlab simulation software. The main disturbance loop in the drive where high-voltage side interference propagates to the low-voltage auxiliary supply was determined,by a set of drive chassis and motor chassis in different grounding conditions for auxiliary power electromagnetic interference test. Based on this interference propagation path,the interference loop was optimized,the part of the transformer in the switching power supply was optimized and the loop impedance was increased,thus greatly reducing the interference on the low-voltage bus. The results indicate that the model is accurate and the way of suppression can significantly reduce the electromagnetic interference on the auxiliary power line.
作者
孙超
陈恒林
SUN Chao;CHEN Heng-lin(College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China)
出处
《机电工程》
CAS
北大核心
2018年第10期1106-1109,1115,共5页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(51577172)
关键词
伺服驱动器
电磁干扰
低压线
servo drive
electromagnetic interference
low-voltage line
