Voltage stabilization of SEIG based Isolated Microgrid using Electric Spring

Abstract

In this paper, a self-excited induction generator (SEIG) based micro grid system working in islanded mode with penetration of irregular wind power is proposed. As wind power is variable in nature it creates voltage and frequency fluctuation in the system. A novel control concept using Electric Spring (ES) is adopted in this work. Electric Spring which is an emerging technology is used to improve the voltage stability and power quality in modern microgrid systems. ES along with non-critical load can provide a springing effect analogous to mechanical spring that keeps the critical load voltage constant. ES employs a “load follows generation” concept for its power management skill. It offers a low-cost method of storing energy. The proposed controller is tested under different loading condition with and without ES. The simulation results show that ES can resolve the voltage fluctuation effect on micro grid due to variation in load sides. The simulation of the aforementioned microgrid is performed and validated using MATRIX LABROTORY environment.