Digital excitation system for a small brushless synchronous generator

Automatic voltage controllers for small size brushless synchronous generators have traditionally utilized analog electronics. Modern voltage control systems are beginning to utilize the power, flexibility, and cost advantages of microcomputer for control. This paper presents a digital solution of the voltage control system for a low power brushless synchronous generator with separately excited exciter. The digital voltage system is tested on a laboratory model with a synchronous generator (54 kVA) and characteristic loads.