Internal Model Based Load Frequency Controller Design for Hybrid Microgrid System

Abstract

The increase of power demand exponentially over the past decade in developing countries has necessitated the integration of different types of renewable energy sources into the utiligy grids which were earlier running with fossil fuel fired units. Renewable energy sources are integrated with these generating plants since it is economical and pollution free. Power generation through these types of generating plants comprise of a combination of intermittent renewable sources like wind, solar and other generating sources like diesel generators, fuel cells. Also, because of the weak inertial nature of the renewable sources used in microgrid, it is much more important to regulate the system frequency closer to the nominal values. This paper explores the development of an Internal Model based controller approach for better frequency regulation in a hybrid microgrid. Two different cases are examined to validate the robustness of IMC based controller design.