DVR with fuzzy logic controller and photovoltaic for improving the operation of wind farm

Abstract

Wind power is one of the most important kind of renewable energies. Wind farm as a device which receives this energy needs some special conditions to work properly. The most common type of wind turbine is the variable-speed directly connected to the grid. Faults in the power system can originate the disconnection of wind farms. Dynamic voltage restore (DVR) is a custom power device used for eliminating voltage sages and swells which is the result of the faults. This paper presents a simulation model of a 12-pulse DVR using photovoltaic (PV) as a mean of providing an alternative energy source for the DVR. In this study, the design of a fuzzy logic (FL) controlled DVR are presented and extended to perform fast fault detection. A new control method for DVR is proposed by combining FL with a carrier modulated PWM inverter. Simulations were carried out using the MATLAB SIMULINK. The simulation results proved the capability of PV-based DVR in eliminating voltage sag and swell distributed system. Improving the operation of wind farm as a energy generator and stabilizing its voltage is the main result of this work.