Abstract
Hydrogen energy is one of the emerging new energy sources in today’s era. It not only has a wide range of materials and simple production, but also its combustion products have no pollution to the environment and have excellent quality that non-renewable fuels such as coal and oil do not have. However, as one of the most common application forms of hydrogen fuel, hydrogen fuel cell, due to its own design and structural characteristics, not only brings convenience to us, but also has the problems of low output voltage and large fluctuation range. Therefore, only by using DC-DC converter to boost and stabilize the output voltage of hydrogen fuel cell, can we efficiently supply power to the backward circuit and load. Combined with the advantages and disadvantages of single isolated and non-isolated converter, this paper puts forward the converter model combining isolated and non-isolated converter, and then introduces the feedback link to stabilize the voltage. Finally, the circuit model is constructed by using MATLAB / Simulink software to verify the accuracy of theory and analysis.
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