earticle

영어

Grid-connected inverter plays a significant role in wind power generation system for energy transmission and power factor regulation. The traditional control strategy based on PI-type current controller and grid voltage vector-oriented control is analyzed firstly. Then, the fuzzy PI controller of voltage loop is designed. According to the errors of input value and its ratio, it can adjust PI parameters in real-time on the basis of fuzzy rule. The experiment results indicate that the proposed method has a good sinusoidal current, a fast dynamic response and a perfect system performance.