PEM-Fuel cell Based Microgrid with NSC Control Strategy

Abstract

Non-polluting hydrogen power-based microgrids are drawing enormous interest worldwide. Hydrogen is expected to account for 24% of the energy supply by 2050. Our government development program has also emphasized the development of hydrogen production. Hydrogen generation integration with fuel cells (FC) has a good potential for generating sustainable energy. Microgrid topology applications are appropriate for both heavy and light load conditions. However, hydrogen energy source integration in a microgrid topology system causes major technical problems like increased harmonics and fluctuations in voltage and currents of the system. Moreover, adding a hydrogen source of energy to a microgrid topology system created major technical problems like fluctuations and harmonic rise in system currents and voltages. It has become extremely difficult to maintain system stability during a time of fluctuating demands and unclear power supply, this turned into a huge challenge. The integration of an FCs system with a grid-connected microgrid topologies system is proposed in this paper. This study developed a dynamic proton exchange membrane (PEMFC) 20KW FC stack model. A nine-switch converter (NSC) is integrated with the FC and loaded into the grid. The NSC is controlled by two unlike control structures, each devoted to regulating the power of the demand and supply side. This integration topology can provide continuous power to the demand irrespective of supply-side uncertainties. Furthermore, no control logic switching is required during grid disconnection. The entire system was tested with the OPAL-RT 4510 real-time simulator, and the results are discussed in this article.