异步电动机失电残余电压的防范与应用  

Countermeasure and Application for the Residual Voltages of AM after Stator Supply Disconnection

作　　者：马宏忠[1] 臧芳 张利民[1] 王惠庆[1] 

机构地区：[1]河海大学电气学院,江苏南京210098 [2]南京724研究所,江苏南京210003

出　　处：《大电机技术》2005年第2期17-20,共4页Large Electric Machine and Hydraulic Turbine

基　　金：国家自然科学基金项目 (50 4 770 10 );教育部高等学校优秀青年教师教学科研奖励计划专项资金

摘　　要：对异步电动机失电残余电压的产生进行分析,建立了异步电动机失电残余电压仿真计算模型,并进行仿真计算。失电残余电压的存在,对重合闸的异步电动机将产生较大的冲击电流及冲击转矩。本文对失电残压的防范方法进行研究,提出减小失电残压对电机起动冲击的措施及存在失电残压情况下电动机群再起动方法。失电残压在有些情况下是可以利用的,本文对利用失电残余电压诊断异步电机转子绕组故障进行研究。The generation of the residual voltage for asynchronous motor after AC Dump (RVACD) is analyzed, it establishes the simulation calculation model and carries out simulation calculation. The existence of RVACD will produce higher impact current and torque to asynchronous motor during reclosing. The countermeasure for RVACD is investigated, the some measures were presented to limit RVACD's impact on the motor's start-up. Then it points out the restarting method for group motors under RVACD. However, RVACD can be utilized in some cases, diagnosis of rotor winding for asynchronous motor is researched by RVACD.

关 键 词：失电 异步电动机 电压 残压 起动方法 转子绕组 异步电机 仿真计算 重合闸 利用 

分 类 号：TM343[电气工程—电机] TM32