摘要：混合励磁发电机结合了永磁发电机效率高、电励磁发电机磁场调节方便的特性，是一种具有广泛应用价值的电机。本文对一种永磁-感应子式混合励磁同步发电机进行研究，在对其结构和工作机理进行分析的基础上，采用有限元法计算发电机的内部电磁场和绕组电感，并对不同极槽配合时电机的外特性进行对比研究。研究结果表明，通过感应子电机和永磁电机的有效结合，能够实现混合励磁同步发电机调速范围宽、输出端电压稳定、效率高的工作要求。

关键词：同步发电机；混合励磁；外特性

Abstract: Hybrid excitation generator (HEG) is a kind of machine with wide application values due to its feature of combining the convenient field regulation of electricity excitation generator and high efficiency of permanent magnetic generator. This paper focused on a permanent magnetinductor HEG. The structure and operating principle were analyzed, and the electromagnetic magnetic and winding inductances were computed using finite element method. And then the external characteristics of the HEGs having different slot/pole combinations were compared. It has been shown that by combination of permanent magnet generator and inductor generator, this kind of HEG is able to fulfill the requirement of wide operating range, stable output voltage and high efficiency.

Key words: synchronous generator；hybrid excitation；external characteristic