Question

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励磁系统是同步发电机组的重要组成部分，直接影响到发电机组的运行特性。励磁系统一般由两部分组成，一部分是励磁功率单元，它向同步发电机的励磁绕组提供直流励磁电流；另一部分是控制部分。根据发电机的运行工况，自动地调节功率单元输出的励磁电流，以满足发电机的运行要求。
4500KW无刷励磁机是上海电气电站设备有限公司发电机厂为1000MW等级汽轮发电机组配套的大容量励磁机。本文介绍了4500KW 无刷励磁机设计原则、主要结构特点、关键工艺和应用前景。

Answer 1

Synchronous generator excitation system is an important part, directly affect the operating characteristics of generating units. Excitation system generally consists of two parts, part of the excitation power unit, it is synchronous generator field winding to provide DC excitation current; the other part is the control part. According to the generator operating conditions and automatically adjust the output of the excitation current of the power unit to meet the requirements for running the generator.
4500KW brushless exciter is the Shanghai Electric Power Equipment Co., Ltd. for the 1000MW generator plant level supporting high-capacity turbo-generator exciter. This article describes the 4500KW brushless exciter design principles, the main structural features, the key technology and application prospects.