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Dynamic Response Improvement of Stand Alone Engine-Generator System using Double Voltage Detection Method  

Lee, Dong-Hee (경성대 전기전자메카트로닉스공학부)
Ahn, Jin-Woo (경성대 전기전자메카트로닉스공학부)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.57, no.7, 2008 , pp. 1195-1199 More about this Journal
Abstract
In this paper, peak detector of generator's output voltage and variable gain controller are introduced for a fast dynamic response. The conventional r,m.s, signal detected has inherent time delay, and the dynamic response of generator using conventional PID controller has some problem in sudden load change. In this paper, the peak detector and signal selector with variable gain controller is used to overcome this problem. The main controller can check the voltage state from the peak detector. When a sudden load change, the over-voltage and under-voltage signal from peak detector change the controller's gain and exciter's current reference. The proposed scheme can improve the dynamic response, which is verified from experimental test of 200kW diesel engine-generator.
Keywords
Engine Generator; AVR; PID;
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