Research on the Control Strategy of Hydrogen-based Integrated Photovoltaic-Energy Storage-Charging Power Station

In recent years, hydrogen energy, as a new green and environmentally friendly energy source, has gradually come into the public eye. Therefore, research on the grid connection of hydrogen fuel cells is essential. This paper proposes a control system for integrating hydrogen fuel cells into a microgrid based on an improved sliding mode algorithm. Firstly, a mathematical model of the hydrogen fuel cell is developed. A boost circuit is designed according to its output characteristics. The sliding mode control algorithm enhances the dynamic performance of the system. To address the chattering generated by sliding mode control, a FUZZY algorithm is employed to design the switching gain, thereby reducing system chattering. Finally, MATLAB simulations verify the stability of the FUZZY sliding mode control, and the total harmonic distortion of the grid-connected current is evaluated, demonstrating compliance with grid connection requirements.