笼型感应电动机断条故障前后转子电磁力计算及结构静力学分析  

Electromagnetic Force Calculation and Structural Static Analysis on the Rotor of Squirrel-cage Induction Motors Before and After the Broken Bars Fault

作　　者：谢颖[1] 冯春爽[1] 杨忠学[2] 刘海松[1] 王泽[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,哈尔滨150080 [2]东北石油大学电气信息工程学院,大庆163318

出　　处：《电工技术学报》2015年第15期164-171,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51107022);黑龙江省政府博士后科研启动项目(LBH-Q12061);黑龙江省普通高等学校新世纪优秀人才培养计划(1252-NCET-015);黑龙江省自然科学基金(E201443);人社部留学人员科技活动项目择优资助项目;哈尔滨市科技创新人才研究专项资金项目(RC2014QN007005)资助

摘　　要：以Y802-2型笼型感应电动机为例,对转子断条故障时的转子电磁应力及结构静力学进行研究。以二维瞬态磁场结果为基础,结合麦克斯韦张量法及洛伦兹力原理,计算得到转子所受磁应力,并给出故障前后转子磁应力随时间的变化规律,此外通过将计算所得转矩均值与实验均值相比较,验证了该电磁力计算结果的准确性。以所得电磁力为载荷,进行电动机稳态情况时转子结构静力学的研究,得到转子故障形变分布。根据故障前后转子电磁力及形变位移的变化可推测出断条故障的进一步演化趋势。Takingthe Y802-2 type squirrel-cage induction motor asan example, the electromagnetic force and structural static on the rotor are researched when the motor operates with the broken bars fault. Based on the results of the two-dimensional transient magnetic field, the magnetic force iscalculated by the Maxwell tensor method and the principle of the Lorentz force. Then the change patterns with time of the rotor electromagnetic force are given before and after the broken bars fault. In addition, the validity of the calculated results is confirmed through comparing with the ones measuredin the experiments. Using the calculated electromagnetic forceas the load, the structural static of the rotor in the steady state is studied afterwards. The fault deformation distribution on the rotor is then achieved. The further evolution trend of the broken bars fault can be speculated by the rotor electromagnetic force and the change of displacement before and after the fault.

关 键 词：感应电动机 断条故障 有限元法 电磁力 结构静力学 故障形变 

分 类 号：TM343[电气工程—电机]