Managing microgrid power generation by using back to back voltage source convertor

Abstract

The paper presents an algorithm for managing a microgrid which connected to the main grid via Back To Back Voltage Source Converter (BTB VSC) which can exchange power with adjacent grid. The proposed microgrid consists of a wind turbine generation unit, two photovoltaics generation units, a storage system, a fuel cell generation unit, a micro turbine and loads. Microgrid ability to manage itself in conditions which there is a definite power injection from upper grid and in another case the ability of microgrid in managing power deficiency which caused by photovoltaic generations is determined in two scenario. Simulation results verifies that BTB VSC can enable microgrid to use its controllable energy resources in power deficiency conditions and in the cases there are limitations of power injections from the main grid.