DC Microgrid based on Battery, Photovoltaic, and fuel Cells; Design and Control

TL;DR

This paper presents a simulation model of a DC microgrid integrating battery, photovoltaic, and fuel cell sources, demonstrating stability through a maximum power point controller in MATLAB/Simulink.

Contribution

It introduces a novel simulation model of a multi-source DC microgrid with a specific control strategy for stability and protection.

Findings

Simulation confirms stable operation with MPPT control.

Topology ensures source protection and load stability.

Effective integration of diverse renewable sources.

Abstract

Microgrids offer flexibility in power generation in a way of using multiple renewable energy sources. In the past few years, microgrids become a very active research area in terms of design and control strategies. Most of the microgrids use DC/DC converters to connect renewable energy sources to the load. In this paper, the simulation model of a DC microgrid with three different energy sources (Lithium-ion battery (LIB), photovoltaic (PV) array, and fuel cell) and external variant power load is built with MATLAB/Simulink and the simulative results show that the stability of DC microgrid can be guaranteed by the proposed maximum power point controller MPPT. The three energy sources are connected to the load through DC/DC converters, one for each. This type of topology ensures protection for each energy source as well as optimum stability at the load.