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Volume 56 Issue 1
Jan.  2021
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Journal of Southwest Jiaotong University  > 2021  >  56(1): 197-205.
CHEN Weirong, LI Jincheng, LI Qi. Power Following Control Strategy of SOC Dynamic Adjustment for Small Fuel-Cell Cars[J]. Journal of Southwest Jiaotong University, 2021, 56(1): 197-205. doi: 10.3969/j.issn.0258-2724.20190552
Citation: CHEN Weirong, LI Jincheng, LI Qi. Power Following Control Strategy of SOC Dynamic Adjustment for Small Fuel-Cell Cars[J]. Journal of Southwest Jiaotong University, 2021, 56(1): 197-205. doi: 10.3969/j.issn.0258-2724.20190552
shu

Power Following Control Strategy of SOC Dynamic Adjustment for Small Fuel-Cell Cars

doi: 10.3969/j.issn.0258-2724.20190552
  • Received Date: 17 Jun 2019
  • Rev Recd Date: 11 Feb 2020
    • Available Online: 24 Nov 2020
  • Publish Date: 01 Feb 2021
    Abstract
  • An SOC (state of charge)-based energy management method is proposed to dynamically adjust the power following coefficient for the small-vehicle hybrid system that consists of an air-cooled proton exchange membrane fuel cell and a lithium battery. Moreover, a hybrid sightseeing car prototype is developed. Three parts of the prototype vehicle are illustrated, i.e., the hybrid power system, hydrogen storage supply system, and signal control system. How the coefficient of the power following algorithm affects the control under different operating conditions is analyzed. By dynamically adjusting the coefficient, the SOC deviation of the lithium battery and output power fluctuation of the fuel cell in the operation of the power following algorithm is alleviated and the service life of the stack is prolonged. Through the actual running tests on the prototype vehicle, the control method was verified. The average operating efficiency of the fuel cell in operation reached 48.15%, and the theoretical maximum cruising range was 94 km, which is consistent with the practice.

     

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