小波变换集成的规则型能量管理策略用于PEMFC混合动力汽车：提升燃料电池堆寿命

Abstract With the rapid development of hydrogen energy and fuel cell hybrid electric vehicles (FCHEVs), there is an increasing demand for advanced energy management strategies (EMS) to balance energy efficiency, fuel cell degradation, and economic performance. However, conventional rule-based EMS often result in excessive power fluctuations and accelerated FC aging under dynamic driving conditions. To address these issues, a Wavelet Transform-Integrated Rule-Based Control strategy (WT-RBC) is developed to enhance energy efficiency and reduce FC degradation in FCHEVs. Results show that, under the CLTC driving cycle, the proposed strategy maintains hydrogen consumption within 8 % of conventional rule-based EMS, while significantly reducing FC voltage degradation from 56.361 mV to 2.93 mV. Wavelet decomposition reduces power oscillations, decreasing maximum power fluctuation from 48.59 kW to 6.92 kW. Average fuel cell efficiency is improved to 40.8 %, and battery degradation is mitigated compared to conventional methods. The fuel cell stack degradation cost is incorporated into the total cost analysis, showing that the WT-RBC ECM achieves a total cost of 13.5 CNY under driving cycles. A comprehensive evaluation of stack replacement cost on the overall economic performance is also conducted. The effectiveness of WT‑RBC in extending fuel cell lifespan, enhancing power stability, and optimizing energy utilization for FCHEV applications is confirmed.