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Energy Consumption Estimation of the Electric Bus Based on Grey Wolf Optimization Algorithm and Support Vector Machine Regression

Author

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  • Wei Qin

    (School of Transportation, Jilin University, Changchun 130022, China)

  • Linhong Wang

    (School of Transportation, Jilin University, Changchun 130022, China)

  • Yuhan Liu

    (School of Transportation, Jilin University, Changchun 130022, China)

  • Cheng Xu

    (Department of Traffic Management Engineering, Zhejiang Police College, Hangzhou 310053, China)

Abstract

Electric buses have many significant advantages, such as zero emissions and low noise and energy consumption, making them play an important role in saving the operation cost of bus companies and reducing urban traffic pollution emissions. Therefore, in recent years, many cities in the world dedicate to promoting the electrification of public transport vehicles. Whereas due to the limitation of on-board battery capacity, the driving range of electric buses is relatively short. The accurate estimation of energy consumption on the electric bus routes is the premise of conducting bus scheduling and optimizing the layout of charging facilities. This study collected the actual operation data of three electric bus routes in Meihekou City, China, and established the support vector machine regression (SVR) model by taking the state of charge (SOC), trip travel time, mean environment temperature and air-conditioning operation time as the independent variables; while the energy consumptions of the route operations served as the dependent variables. Furthermore, the grey wolf optimization (GWO) algorithm was adopted to select the optimal parameters of the proposed model. Finally, a support vector machine regression model based on the grey wolf optimization algorithm (GWO-SVR) is proposed. Three real bus lines were taken as examples to validate the model. The results show that the mean average percentage error is 14.47% and the mean average error is 0.7776. In addition, the estimation accuracy and training time of the proposed model are superior to the genetic algorithm-back propagation neural network model and grid-search support vector machine regression model.

Suggested Citation

  • Wei Qin & Linhong Wang & Yuhan Liu & Cheng Xu, 2021. "Energy Consumption Estimation of the Electric Bus Based on Grey Wolf Optimization Algorithm and Support Vector Machine Regression," Sustainability, MDPI, vol. 13(9), pages 1-20, April.
  • Handle: RePEc:gam:jsusta:v:13:y:2021:i:9:p:4689-:d:541451
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    References listed on IDEAS

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    Cited by:

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    2. Mena ElMenshawy & Ahmed Massoud, 2022. "Medium-Voltage DC-DC Converter Topologies for Electric Bus Fast Charging Stations: State-of-the-Art Review," Energies, MDPI, vol. 15(15), pages 1-20, July.
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    4. Jiang, Junyu & Yu, Yuanbin & Min, Haitao & Cao, Qiming & Sun, Weiyi & Zhang, Zhaopu & Luo, Chunqi, 2023. "Trip-level energy consumption prediction model for electric bus combining Markov-based speed profile generation and Gaussian processing regression," Energy, Elsevier, vol. 263(PD).

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