摘要：无刷双馈电机作为一种新型交流电机，在电动机变频调速控制以及发电机变速恒频控制领域具有广阔的应用前景，然而其结构、电磁关系、运行特性都比常规电机更加复杂。为了研究该电机的运行特性，本文从笼型转子结构的无刷双馈电机基本电磁关系出发，运用电机学的基本理论和方法，推导了其的电压基本方程，经过频率归算和绕组归算，得到笼型转子无刷双馈电机的通用等效电路和相量图，进而得到了该电机在自然同步和异步运行模式下的等效电路。在此基础上，利用VB编程进行了该电机的电磁设计，通过计算得到了等效电路中的各个参数值，并利用Matlab对该电机不同运行模式下的运行性能进行了仿真分析，说明了等效电路及其参数值的正确性。
关键词：无刷双馈电机；等效电路；参数计算；运行性能

Abstract: As a new AC Machine, Brushless Doublyfed Machine (BDFM) has broad applicable potentials in the control fields of variablefrequencyadjustablespeed motors and variablespeedconstantfrequency generators. However, its structure, electro magnetic relationship and operating performances are more complex than those of the conventional machines. To study the operating performances of BDFM, based on the basic electromagnetic relationship of BDFM with cage rotor, by using the basic theories and methods of electric machinery, the basic voltage equations, the general equivalent circuit and the phase diagram were derived after frequency referring and winding referring. Furthermore, the special equivalent circuits at the natural synchronous and asynchronous operation modes were obtained. And then, the electromagnetic design of BDFM was programmed on VB platform and the parameters of the equivalent circuit were calculated and obtained. The operating performances of BDFM under the different operating modes were simulated by Matlab. The results illustrate the validity of equivalent circuit and parameter values.
Key words: brushless doublyfed machine; equivalent circuit; parameter calculation; operating performance