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Energy Saving Estimation of Athens Trolleybuses Considering Regenerative Braking and Improved Control Scheme

Author

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  • Nena Apostolidou

    (Department of Electrical & Computer Engineering, Democritus University of Thrace, 67132 Xanthi, Greece)

  • Nick Papanikolaou

    (Department of Electrical & Computer Engineering, Democritus University of Thrace, 67132 Xanthi, Greece)

Abstract

In this work, the electromechanical system of the 8000-series of Athens trolleybuses, based on data provided by OSY S.A., is analyzed. Those data were used to develop a valid model in order to estimate the total energy consumption of the vehicle under any possible operating conditions. In addition, an effort is made to estimate the energy saving potential if the wasted energy—in the form of heat—during braking or downhill courses is recovered (regenerative braking) and retrofitted during normal operation. This process requires the installation of appropriate electrical apparatus to recover and temporarily store this energy amount. Moreover, due to the fact that the main engine of the system is an asynchronous electric machine, its driving scheme is also of interest. This study assumes the current driving scheme, that is the direct vector control (DVC), and proposes an alternative control method, the direct torque control (DTC). Energy consumption/saving calculations highlight the effectiveness of incorporating regenerative braking infrastructure in trolleybuses transportation systems. Finally, a sustainable hybrid energy storage unit that supports regenerative braking is proposed.

Suggested Citation

  • Nena Apostolidou & Nick Papanikolaou, 2018. "Energy Saving Estimation of Athens Trolleybuses Considering Regenerative Braking and Improved Control Scheme," Resources, MDPI, vol. 7(3), pages 1-18, July.
    • Handle: RePEc:gam:jresou:v:7:y:2018:i:3:p:43-:d:159331
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    References listed on IDEAS

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    1. Yang Yang & Xiaolong He & Yi Zhang & Datong Qin, 2018. "Regenerative Braking Compensatory Control Strategy Considering CVT Power Loss for Hybrid Electric Vehicles," Energies, MDPI, vol. 11(3), pages 1-15, February.
    2. Gang Zhang & Zhongbei Tian & Huiqing Du & Zhigang Liu, 2018. "A Novel Hybrid DC Traction Power Supply System Integrating PV and Reversible Converters," Energies, MDPI, vol. 11(7), pages 1-24, June.
    3. Bing Bu & Guoying Qin & Ling Li & Guojie Li, 2018. "An Energy Efficient Train Dispatch and Control Integrated Method in Urban Rail Transit," Energies, MDPI, vol. 11(5), pages 1-23, May.
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    Cited by:

    1. Nick Rigogiannis & Ioannis Bogatsis & Christos Pechlivanis & Anastasios Kyritsis & Nick Papanikolaou, 2023. "Moving towards Greener Road Transportation: A Review," Clean Technol., MDPI, vol. 5(2), pages 1-25, June.
    2. Ģirts Staņa & Jānis Voitkāns & Kaspars Kroičs, 2023. "Supercapacitor Constant-Current and Constant-Power Charging and Discharging Comparison under Equal Boundary Conditions for DC Microgrid Application," Energies, MDPI, vol. 16(10), pages 1-27, May.

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