大型同步电机变频启动系统的调试技术  

Debugging Technology of SFC Start System for Large Synchronous Motor

作　　者：周淑兰 周洪云 孙鑫 ZHOU Shulan;ZHOU Hongyun;SUN Xin(Department of Scientific Research and Production Security,AECC Shanghai Commercial Aircraft Engine Manufacturing Co.,Ltd.,Shanghai 201306,China;Field Service Department,ABB Beijing Drive Systems Co.,Ltd.,Beijing 100015,China)

机构地区：[1]中国航发上海商用航空发动机制造有限责任公司科研生产保障部,上海201306 [2]北京ABB电气传动系统有限公司服务部,北京100015

出　　处：《电工技术》2022年第22期30-32,35,共4页Electric Engineering

摘　　要：通过某大型空压机组同步电机LCI变频启动系统的调试案例,介绍了大型同步电机LCI变频启动系统的调试技术,包括调试、差动保护故障排查、电机“反转-正转”问题调试。针对该调试案例中电机带机组无法启动、启动初始阶段电机发生2~3次小幅度“反转-正转”再正常转动,分析启动过程电机磁通、转子位置、励磁电流、定子电流波形,介绍了如何优化LCI变频器电压信号采样位置及直流补偿磁通角度和延时释放晶闸管脉冲等参数,从而解决机组启动初始阶段电机小幅度反转问题。Through a debugging case of LCI variable frequency start system of a large air compressor's synchronous motor,the debugging technology of LCI variable frequency start system of large synchronous motor is introduced,including debugging,differential protection fault troubleshooting,and motor"reverse forward"problem debugging.In this commissioning case,the motor and unit could not be started.At the initial stage of starting,the motor had 2~3 times of small amplitude"reverse forward"and then rotated normally.The motor magnetic flux,rotor position,excitation current and stator current waveform during startup are analyzed.The problems of how to optimize the sampling position of voltage signal of LCI inverter,DC compensation flux angle,delayed release thyristor pulse and other parameters,so as to solve the problem of small amplitude reversal of motor at the initial stage of unit startup.

关 键 词：同步电机 调试技术 LCI变频启动 反转-正转 

分 类 号：TP275[自动化与计算机技术—检测技术与自动化装置]