Analysis and design of a grid connected wind generating system with VSC

This paper describes the analysis and design of a grid connected wind generating system with voltage source converter (VSC). When wind generating system (WGS) is connected to grid create a problem of power quality such as poor power factor, voltage distortion, and harmonic distortion on the grid. The grid connection is realized by a controlled PWM voltage source inverter. The VSC is operated in hysteresis current control mode. The WGS and the electrical grid are de-coupled by means of DC link capacitor, which act as a buffer between the systems. The proposed digital control scheme can achieve the unity power factor and reduces the current harmonic distortion on the utility side. Thus with proper design and control of VSC in grid system, is the solution for reducing the magnitude of current harmonics injected in to grid and to maintain power quality norm on the grid. The proposed system is simulated in MATLAB/SIMULINK and result is presented in the paper.