Dynamic Modeling and Stability Analysis of Wind Generator Based Micro Grid

In present studies of wind and photovoltaic generation has a great impact on the microgrid application. This is challenging due to their complex and nonlinear behavior. Integration with the grid is still difficult due to the dynamic characteristics of wind and the intermittent nature of the PV cell. In this paper, a developed model of the microgrid with solar cell and wind turbine source is proposed to study the control aspects and harmonic reduction. The entire model is designed in MATLAB/SIMULINK and simulated in on-grid mode of operation. The generator characteristics like speed, torque, grid voltage, and current are studied under a three-phase grid fault with a PID controller. Further to improve the performance, the gains of the PID controller are optimized by application of aim proved gravitational search algorithm KCGSA. The optimized PID controller shows better performance than the conventional PID controller in stability and harmonic reduction.