Fuzzy P+I 제어기를 사용한 풍력/디젤 하이브리드 시스템 전력품질 제어

Abstract

This paper proposes a modeling and controller design approach for a wind-diesel hybrid system that includes a wind turbine and dump load. Wind turbine depends on nature such as wind speed. It causes power fluctuations of wind turbine. Excessive power fluctuation at stand-alone power grid is even worse power qualities than large-scale power grid. The proposed control scheme for power quality at wind/diesel hybrid power system is Fuzzy P+I controller. This controller has advantages of PI and Fuzzy controller. Fuzzy P+I controller shows good performance both Linear and nonlinear systems. The proposed model is carried out by using Matlab/Simulink simulation program. In the simulation study, the proposed controller is compared with a conventional PI controller. Simulation results show that the proposed controller is more effective against disturbances caused by wind speed and load variation than the PI controller, and thus it contributes to a better quality wind-diesel hybrid power system.