三相交流调压电路在异步电机软起动中的应用

›› 2016, Vol. 29 ›› Issue (2): 163-.

三相交流调压电路在异步电机软起动中的应用

刘凯,荣军,宋能,刘升,张磊

(湖南理工学院信息与通信工程学院,湖南岳阳 414006)

出版日期:2016-02-15 发布日期:2016-02-25
通讯作者: 荣军(1978—),男,硕士,讲师。湖南研究方向:开关电源,电机控制。
基金资助:
湖南省高校教学改革研究基金资助项目(湘教通［2013］223号);湖南理工学院校级教研教改基金资助项目(2014B19)

Application of Three-phase AC Regulating Voltage Circuit in Soft Start of Asynchronous Motor

LIU Kai,RONG Jun,SONG Neng,LIU Sheng,ZHANG Lei

(School of Information and Communication Engineering,Hunan Institute of Science and Technology,Yueyang 414006,China)

Online:2016-02-15 Published:2016-02-25

摘要/Abstract

摘要：

针对异步电动机全压起动时起动电流和起动转矩过大,易造成电机和负载损坏的缺点,将晶闸管三相交流调压电路引入电机软起动中。研究结果表明,其能显著改善起动电流和转矩过大的问题。文中阐述了晶闸管三相交流调压电路的工作原理;介绍了其在异步电动机软起动中的应用。此外,还研究了三相交流调压在电机软起动过程中,Matlab/Simulink的建模方法。给出了电机在软起动和全压起动的仿真结果,并对仿真结果进行了比较分析,相比全压起动,采用软起动可降低电机起动电流和起动转矩。

关键词: 异步电动机, 晶闸管, 三相交流调压, 建模与仿真

Abstract:

The SCR three-phase AC adjusting voltage circuit is introduced into the soft starting of asynchronous motor to address the motor and load damages because of too large a starting current and starting torque for asynchronous motor with full voltage starting.The paper firstly describes the working principle of the SCR three-phase AC adjusting voltage circuit,and then introduces the application of the soft starting for asynchronous motor.The modeling method of three-phase AC voltage regulation in soft starting process based on Matlab/Simulink is studied in detail for asynchronous motor,and finally the paper gives the simulation results in the soft starting and full voltage starting,and the simulation results are compared and analyzed.The research results show that the problem of starting current and torque is improved significantly by using the soft starter compared with full voltage starting.

Key words: asynchronous motor;SCR;three-phase AC regulating voltage;modeling and simulation

中图分类号:

TM343

刘凯,荣军,宋能,刘升,张磊. 三相交流调压电路在异步电机软起动中的应用[J]. , 2016, 29(2): 163-.

LIU Kai,RONG Jun,SONG Neng,LIU Sheng,ZHANG Lei. Application of Three-phase AC Regulating Voltage Circuit in Soft Start of Asynchronous Motor[J]. , 2016, 29(2): 163-.

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