高压断路器有限转角永磁电机操动机构两种定子结构  

Two Stator Structures of Limited Angle Permanent Magnet Motors for Operating Mechanism on High Voltage Circuit Breaker

作　　者：李永祥[1] 林莘[1] 徐建源[1] 

机构地区：[1]沈阳工业大学电气工程学院,沈阳110870

出　　处：《电工技术学报》2010年第5期61-68,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(50577043)

摘　　要：为了提高高压断路器操作性能,研究了一种高压断路器新型操动机构——有限转角永磁电机操动机构。针对高压断路器的机械要求,对有限转角永磁电机的定、转子结构和主要参数(电负荷、磁负荷、极对数、气隙及极弧系数等)进行了设计。电机的设计过程中提出了两种定子结构,本文采用有限元方法对两种定子结构的电机进行了有限元分析和动态特性仿真,一方面验证电机设计的合理性,另一方面得到了电机在分合闸过程中主要参数的特性曲线(电磁转矩、电流、转速和转角等)。通过对有限元仿真结果的分析,两种定子结构电机具有各自不同的特点,都能够提供较高的满足分/合闸速度要求的机械特性。与断路器的联机实验测得了合闸过程中动触头的行程曲线,验证了电机机构能够满足断路器的合闸操作要求,这为高压断路器采用电机操动机构提供依据。A limited angle permanent magnetic motor operating mechanism is proposed and researched in order to improve the operating performance of high voltage circuit breaker.The structure and the parameters of the limited angle permanent magnet motor are designed,which is based on the mechanical characteristics requirement of high voltage circuit breaker.The parameters contain the electric load,magnetic load,pole and so on.The finite element analysis and dynamic simulation is achieved by using the finite element method according to the two kinds of stator structure,which are proposed in the motor design.The simulation results verify the reasonable of motor design and gain the characteristic curves（torque,current,revolution and angle,et al.）.The analysis results indicate that the two stator motor design is reasonable and has an excellent performance which can provide sufficient opening or closing speed to meet the requirements of circuit breaker.The closing stroke curve of contact is gained by the testing of motor actuator and circuit breaker.The testing results indicate that the closing operation requirement of circuit breaker is realized by the motor operating mechanism.It can provide a base for the high voltage circuit breaker using the motor operating mechanism.

关 键 词：高压断路器 有限转角永磁电机 电机机构 动态特性仿真 

分 类 号：TM561[电气工程—电器]