The generator excitation system is a collective term for the power supply and auxiliary equipment that supply excitation current to synchronous generators. It generally consists of two main parts: an excitation power unit and an excitation regulator. The generator excitation system includes DC exciter, brushless exciter, AC exciter, etc. In the past decade, due to the emergence and use of new technologies, processes, and devices, the excitation methods of generators have been continuously developed and improved. In terms of automatically regulating excitation devices, many new regulating devices have also been continuously developed and promoted Excitation principle
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