静止状态下的多相感应电机参数辨识方法  

Parameters Identification of Multiphase Induction Motors at Standstill

作　　者：郑仕达 杨家强[1] ZHENG Shida;YANG Jiaqiang(Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学,杭州310027

出　　处：《大电机技术》2018年第6期1-5,共5页Large Electric Machine and Hydraulic Turbine

基　　金：国家自然科学基金(面上项目)(51777191)

摘　　要：在多相感应电机非对称T型等效电路的基础上,提出了一种静止状态下的参数辨识方法。考虑到低压大功率多相感应电机的参数较常规三相感应电机小,为避免逆变器非线性和补偿误差,采用直接测量相电压的方法代替电压重构法,可以准确辨识出电机的全部参数。针对励磁电感在数值上仅为几毫亨,对采样误差较为敏感的问题,励磁电感的辨识采用低频交流注入和突减电流两种方法互相校核。最后通过实验验证了该方法的有效性。In order to obtain the accurate parameters of multiphase induction motor(IM)at standstill,a method was proposed based on the asymmetric T type circuit.Considering the smaller parameters of the low voltage and high power multiphase IMs than usual 3-phase IMs,voltage acquirement is via measuring phase voltage directly instead of voltage reconstruction so that the nonlinearity and compensation errors are avoided.Especially for the magnetizing inductance(approximately 8~10mH),both low-frequency injection and current dropping methods are adopted to validate the final value of magnetizing inductance.The experimental results show the validation of the proposed parameter identification method.

关 键 词：参数辨识 静止状态 低压大功率 多相感应电机 

分 类 号：TM311[电气工程—电机]