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Study on energy management strategy for hybrid power system with fuel cell hysteresis

Author

Listed:
  • Zhao, Xiuliang
  • Yuan, Hehu
  • Wang, Lei
  • Wang, Ruochen
  • Sun, Xiaodong
  • Shi, Dehua
  • Wang, Limei
  • Shikazono, Naoki

Abstract

The voltage hysteresis of fuel cell system (FCS) directly impacts power distribution of the hybrid power system, thereby affecting the economic efficiency of the hybrid power system. Previous research on energy management strategies (EMSs) has often relied on the static model, neglecting the influence of FCS hysteresis on the economics of the hybrid power system. This paper proposes an EMS considering FCS hysteresis to minimize hydrogen consumption. Firstly, a Markov vehicle speed prediction model based on time classification constraint is proposed to accurately predict future speed. Then, the voltage hysteresis of the FCS is analyzed and an equation to characterize the voltage hysteresis is presented. Finally, an equivalent consumption minimum strategy (ECMS) considering fuel cell voltage hysteresis is proposed. The results indicate that the designed EMS can achieve locally optimal output power within the fuel cell system's output range. Compared to the original EMS, the economy improved by 3.55 % under medium-speed conditions and 2.02 % under comprehensive conditions.

Suggested Citation

  • Zhao, Xiuliang & Yuan, Hehu & Wang, Lei & Wang, Ruochen & Sun, Xiaodong & Shi, Dehua & Wang, Limei & Shikazono, Naoki, 2025. "Study on energy management strategy for hybrid power system with fuel cell hysteresis," Energy, Elsevier, vol. 315(C).
    • Handle: RePEc:eee:energy:v:315:y:2025:i:c:s0360544225000490
    DOI: 10.1016/j.energy.2025.134407
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