多相无刷直流发电机的换向过程  

The Commutation Processes in Polyphase DC Generators

作　　者：励庆孚[1] 贾小川[1] 

机构地区：[1]西安交通大学

出　　处：《电工技术学报》1995年第1期1-5,11,共6页Transactions of China Electrotechnical Society

摘　　要：本文分析了多相无刷直流发电机的换向过程。此发电机是一种新型发电机，它由直流机电枢绕组外接多相全波整流桥组成。本文重点讨论了不同励磁波形，矩形波、梯形波和三角波对换向过程的影响，得到了二极管随负载电流变化的导通规律，即进入换向角ρ，换向重叠角γ随负载Ｉ的变化规律。以此为基础，可以分析电机的稳态特性。The paper analyses the commutation processes in polyphase brushless DC generators. This machine is a new kind of generator which comprises DC armature winding connected with a polyphase full wave rectifier bridge. The effects of field mmf shapes,rectangular, trapezoidal and triangular, on the commutation process are discussed. The conductive regularities of diodes with the load current, that is the delayed angle and overlap angle change with load current, are discussed in detail.

关 键 词：无刷电机 励磁机 换向 流电机 

分 类 号：TM330.6[电气工程—电机]