Temperature is a critical factor influencing the performance of proton exchange membrane (PEM) electrolysis systems
making stable temperature control essential for ensuring both system safety and operational efficiency. This study investigates the application of an optimized fuzzy PID controller in PEM electrolytic hydrogen production systems. It analyzes the impact of system temperature on electrolyzer efficiency and explores the enhancement of energy efficiency through a multistage heat recovery structure. The findings demonstrate that the optimized fuzzy PID controller achieves faster and more precise temperature regulation compared to traditional PID and fuzzy PID controllers. Specifically
the pump regulation time is reduced by approximately 70 seconds
while overshoot is decreased by approximately 4%. Additionally
the multistage heat recovery structure enables the recovery of 47.98 kW of waste heat in a 200 kW PEM electrolysis system
resulting in a 23.04% improvement in overall system efficiency. These results underscore the significant potential of optimized controllers and efficient waste heat utilization to enhance the performance and energy efficiency of PEM electrolytic hydrogen production systems
highlighting their valuable implications for engineering applications.
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