선박용 동기 발전기의 여자 제어시스템 설계
Design of Excitation Control System of Synchronous Generator on Board Ships
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초록
본 논문에서는 선박용 동기발전기 여자제어시스템의 성능을 확인하기 위해 선급기술규칙에 따라서 시행한 실험결과를 제공한다. 실험에서는 발전기의 각 부하 변화에 대해 PID 제어기와 퍼지제어기를 적용하고 두 제어기법이 선급의 기술규칙을 만족하는 지 관찰하고 성능을 비교 검토 한다. 이를 위해 PID 제어기법과 퍼지제어기법을 랩뷰 프로그램으로 작성한 후, PID 제어기의 경우는 한계 감도법과 약간의 조정을 통해 이득값을 결정한다. 퍼지제어기는 맘다니(Mamdani)의 방법으로 전압오차값과 전압오차변화율값, 출력전압값에 대해 멤버쉽함수를 구성한다. 이상의 PID 제어기법과 퍼지제어기법을 실제 소형 발전기에 적용하고 선급기술규칙에 따른 실험을 통해 안정성과 성능개선 특성을 비교 검토한다.
Abstract
This paper provides experimental results of an excitation control system of the synchronous generator on board shipsin accordance with rules of classification society to make sure its performance. The experiment compares and reviews controlresults between PID control and fuzzy logic control applied to change of loads of the generator in order to make sure to satisfythe rules of classification society. Both of them are written by Labview program. In case of PID Control, this paper firstlyadjusts the gains by ultimate sensitive method and the gains is more tuned by engineer's experience. And the fuzzy logic controlleruses Mamdani method to make membership function for error between reference voltage and measuring voltage, differentialerror rate and output voltage. This paper is to make sure the experimental results of the proposed excitation control systemapplied to actual small synchronous generator with PID control and fuzzy logic written by using Labview program and itis proved on stability and improvement through experiments.
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