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Analysis of the influence of electric flywheel and electromechanical flywheel on electric vehicle economy

Author

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  • Sun, Binbin
  • Li, Bo
  • Xing, Jilei
  • Yu, Xiao
  • Xie, Mengxue
  • Hu, Zihao

Abstract

Improving energy utilization efficiency to extend the range of vehicle is the common issue concerned by various forms of electric vehicles. In order to reveal the influence of electric flywheel and electromechanical flywheel on vehicle economy, two kinds of hybrid energy systems are studied. Firstly, based on the operating characteristics of the two types of flywheels, the topology schemes of the two hybrid energy systems are designed. On this basis, to make full use of the advantages of electric flywheel and electromechanical flywheel, energy management strategies based on wavelet algorithm and logic threshold are designed. Finally, economy tests of the two hybrid energy systems are conducted. Results show that compared with the single energy scheme with lithium battery, under CLTC, as the control motor of the electric flywheel operates under high speed and low torque range frequently, the energy consumption improvement of lithium battery is not enough to compensate for the flywheel energy loss. The net loss of the lithium battery-electric flywheel energy system increases by 2.61%. Profit from efficiency improvement of lithium battery system, increase of regenerative energy recovery and better efficiency of main drive motor, the net loss of the lithium battery-electromechanical flywheel energy system decreases by 6.44%.

Suggested Citation

  • Sun, Binbin & Li, Bo & Xing, Jilei & Yu, Xiao & Xie, Mengxue & Hu, Zihao, 2024. "Analysis of the influence of electric flywheel and electromechanical flywheel on electric vehicle economy," Energy, Elsevier, vol. 295(C).
    • Handle: RePEc:eee:energy:v:295:y:2024:i:c:s0360544224008417
    DOI: 10.1016/j.energy.2024.131069
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