Performance Analysis of Voltage Source Sine PWM Inverter for Micro Grid Topology

Abstract

A research work is being carried out on Micro grid system operation and control. Also, analysis, design and implementation of laboratory scale Micro Grid (MG) are much optimized work for the researchers. It is well documented in many publications, literatures and group discussions about the design analysis, battery design issues, design of Inverter, and Buck converter problem. The actual implementation of MG laboratory test bed leads to different issues mentioned earlier and has to overcome by doing actual software simulation before implementation. The scheme MG comprises of Solar PV panel, Wind Turbine, Energy Storage, Converter, Inverter, Charge Controller and several electrical loads which are fed through a Voltage Source Inverter (VSI).The Inverter which is proposed here is with PWM control with Proportional Resonant (PR) Controller. Whenever some disturbances occur in the system, Static Transfer Switch (STS) has to open & should isolate the Utility and MG within a very short duration. By this time the Distributed Energy Sources (DERs) is able to supply to the connected load maintains the good voltage regulation. Now, the DERs must deliver the power to connected loads and when fault clears and system is healthy, the MG should be able to re-synchronize with utility grid smoothly from Islanding mode of operation. The designed MG lab test bed will be undergone the different analysis about Total Harmonic Distortion (THD), transient behavior and other analysis regarding power system such as improvement of Power Factor on load side. By the use of DERs in the MG topology it is very beneficial to the environment as there is massive use of Renewable Energy Resources (RES).