基于晶闸管模糊控制的电动机软起动研究  

Research of Soft Starting of Motors Based on Fuzzy Control of Thyristors

作　　者：杨莉媛[1] 崔建明[1] 凌文豪[2] 

机构地区：[1]太原理工大学电气与动力工程学院,太原030024 [2]黑龙江海事局,哈尔滨150010

出　　处：《电气技术》2011年第7期24-27,共4页Electrical Engineering

摘　　要：传统降压起动方式会对电动机本身、拖动设备及电源设备的使用寿命有很大的影响,同时对电网电压也造成很大的冲击,影响同一电网其他电气设备的正常运行。为了解决上述问题,本文研究了三相感应电动机软起动器。主电路由三组反并联的晶闸管构成,通过控制晶闸管的触发角,降低电动机定子电压,从而达到抑制起动电流冲击的目的。对交流调压电路进行了进一步的研究,利用起动电流信号作为反馈量,对三相感应电动机软起动控制系统进行闭环控制。启动系统采用模糊控制方法,利用Matlab(Simulink)建立系统的数学仿真模型,并对仿真结果进行了分析。For the voltage dropping starting of traditional methods not only will be bad for the life of motor itself,equipment and power equipment,but also bring large shock to the power grid,and will effect the normal operation of the other electrical equipment of on the same power grid.A soft starter of three-phase induction will be discussed in this paper to solve the problems.The main circuit is constituted by anti-parallel thyristors in three groups.By controlling the triggered angle of thyristors,the voltage of motor starter will reduce,then the shocking of starting current will be inhibited.Further study of Circuit exchange regulator presents,takes the starting current as feedback signal to complete closed-loop control of soft start control of the three-phase induction motor.Using fuzzy control method in starting system establishing a simulation model in Matlab（Simulink） and having the corresponding simulation and simulation analysis.

关 键 词：感应电动机 模糊控制 软起动器 晶闸管 

分 类 号：TM32[电气工程—电机]