一、概述由于电机式励磁系统存在振动,噪音、机械磨损、碳刷火花等缺点,影响安全运行,增加维修工作量,所以在五十年代初,美、日、英,苏等国就致力于新型励磁系统的研制工作,成功地制造出按补偿原理工作的各种静止式自励系统和离子励磁系统,并取得了一定的运行经验。但由于各种闸流管和金属水银整流器结构复杂、可靠性低和投资大,致使这些励磁 First, an overview As the motor excitation system vibration, noise, mechanical wear, carbon brush spark shortcomings affect the safe operation and increase maintenance workload, so in the early fifties, the United States, Japan, Britain, the Soviet Union and other countries committed to The development of new excitation system, successfully manufactured according to the compensation principle of a variety of static self-excitation system and ion excitation system, and achieved some operational experience. However, due to the complex structure of various thyristors and metal mercury rectifiers, low reliability and large investment, resulting in these excitation