An Effective Direct Power Control Method for Matrix Converter-Based Unified Power-Flow Controllers in Wind Energy System

This paper presents a Direct Power Control Method for three phase matrix converters operating as a unified power flow controller (UPFC) in Wind energy systems. The MC (Matrix Converter) allows the direct AC/AC power conversion without dc from wind generators. Due to the size of the designed UPFC is reduced and power capacitors losses, with high reliability. This direct power control (DPC) is established for MC-UPFC is for dynamic model with input filters. The result of line active and reactive power together with ac supply reactive power it can be use directly controlled by selecting an appropriate matrix converter switching state assuring good steady-state and dynamic responses. The simulation results of DPC controllers for MC-UPFC show decoupled active and reactive power control and fast response times. Compared to an MC-UPFC using active and reactive power linear controllers based on a modified high-frequency PWM modulator the experimental results of the advanced DPC-MC guarantee faster responses without overshoot and no steady-state error to presenting no cross-coupling in dynamic and steady-state responses.