동기발전기용 디지털 여자시스템 고성능 제어

High Performance Control of Digital Excitation System for Synchronous Generator

In this paper digitally based excitation systems for the synchronous brushless generators are presented. System configuration, control functions with their structure functions are also shown. The control system has two feedback loops: main one based on a generator's voltage with digital controller and inner one based on excitation voltage of the exciter with analog controller. Usually the generator regulation of voltage Is made with transducers for the voltage measurement. This paper shows technique of measuring the voltage without harmonics affect, using Park's equation transformation.