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Energy conservation

Optimization of Energy-Saving Operation Strategy for On-Board Energy Storage Trains

Strategic Insights

— 1 min read

Research investigators have published a new study on the implementation of on-board energy storage (OBES) trains in urban rail transit, highlighting distinct energy-saving driving strategies compared to conventional grid-powered trains. The study, which has been peer-reviewed, explores the optimal control conditions and energy-saving speed profile optimization methods of OBES trains. Financial supporters for this research include the National Natural Science Foundation of China and the Tianfu Yongxing Laboratory Organized Research Project Funding.

Key Takeaways:

  • The implementation of OBES trains in urban rail transit is gradually increasing, leading to energy-saving driving strategies.
  • The optimal control conditions (OCCs) and energy-saving speed profile optimization methods of OBES trains are studied, considering their unique power coupling constraints.
  • An optimal control model with OBES as the control variable for minimizing energy consumption is established, using Pontryagin's maximum principle to derive the OCC of the OBES trains.
  • The balanced power (BP) condition is determined as the energy-saving condition, and the BP insertion algorithm is designed to generate punctual energy-saving speed profiles.
  • Simulations on a tram powered by supercapacitors (SCs) show that the proposed algorithm can obtain an energy-saving speed profile that satisfies the constraints, with an energy-saving rate of 9.23% compared to the cruise strategy.
  • The proposed algorithm has high computing efficiency while ensuring the energy-saving effect on different tracks.
  • The effects of different parameters and models of the SC are analyzed in the study.
  • Additional authors for this research include Chengcheng Fu, Xinkun Tao, Yu Rao, Qingyuan Wang, and Xiaoyun Feng.

Statistics:

  • 9.23%: Energy-saving rate of the proposed algorithm compared to the cruise strategy.
  • 11: Issue number of the publication "Ieee Transactions On Transportation Electrification".
  • 5: Volume number of the publication "Ieee Transactions On Transportation Electrification".
  • 10680-10694: Page numbers of the publication "Optimization of Energy-saving Operation Strategy for On-board Energy Storage Trains".
  • 1,022: Line number of the publication "Ieee Transactions On Transportation Electrification".

Sources:

  • "Optimization of Energy-saving Operation Strategy for On-board Energy Storage Trains". Ieee Transactions On Transportation Electrification, 2025;11(5):10680-10694.
  • Ieee Transactions On Transportation Electrification can be contacted at: Ieee-inst Electrical Electronics Engineers Inc, 445 Hoes Lane, Piscataway, NJ 08855-4141, USA.
  • The news correspondents report that additional information may be obtained from Pengfei Sun, Southwest Jiaotong University, School of Electrical Engineering, Chengdu 611756, People's Republic of China.

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