Study on fuel economy and regenerative braking of 48V mild hybrid vehicle with two motors

  • Seongmin Ha 
  • Wonbin Na 
  • Hyeongcheol Lee 
  • a,b Department of Electric Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 133-791, Korea
  • c Division of Electrical and Biomedical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 133-791, Korea
Cite as
Ha S., Na W., Lee H. (2018). Study on fuel economy and regenerative braking of 48V mild hybrid vehicle with two motors. Proceedings of the 17th International Conference on Modeling & Applied Simulation (MAS 2018), pp. 22-26. DOI: https://doi.org/10.46354/i3m.2018.mas.004

Abstract

In this paper, we model 48V MHEV with P0 + P4 structure and develop HCU control algorithm. This study analyzes the characteristics of fuel consumption and regenerative braking according to the ratio of two motor powers. The HCU control algorithm consists of a mode decision algorithm and a power distribution algorithm. The vehicle model was developed using the Autonomy program. The HCU control algorithm was developed using Matlab/Simulink. Fuel economy simulation and regenerative braking energy analysis are performed in the FTP75 driving cycle environment. In this paper, the operating characteristics of 48V MHEV are compared according to the power ratio of two motors, and the regenerative braking energy is analyzed.

References

  1. S, Ha., T, Park., W, Na,. and H, Lee,.”Power distribution control algorithm for fuel economy optimization of 48V mild hybrid vehicle,” Proc. of the Int. Conference on Modeling and Applied Simulation, 2017, ISBN 978-88-97999-91-1, 185- 190.
  2. A. Rick and B. Sisk, “A Simulation Based Analysis of 12V and 48V Microhybrid System Across Vehicle Segments and Drive Cycles,” SAE Technical Paper, 2015-01-1151.
  3. Bao, R., Avila, V., and Baxter, J., “Effect of 48V Mild Hybrid System Layout on Powertrain System Efficiency and Its Potential of Fuel Economy Improvement,” SAE Technical Paper 2017-01-1175, 2017.
  4. German, J. “Hybrid vehicles: Trends in technology development and cost reduction,” ICCT, http://www.theicct.org/hybrid-vehicles-trendstechnology-development-and-cost-reduction, 2015.
  5. Awadallah, M., Tawadros, P., Walker, P., and Zhang, N., Comparative fuel economy, cost and emissions analysis of a novel mild hybrid and conventional vehicles. Proc IMechE Part D: J Automobile Eng 2017; 1-17.
  6. Kuypers, M., "Application of 48 Volt for Mild Hybrid Vehicles and High Power Loads," SAE Technical Paper2014-01-1790, 2014, doi:10.4271/2014-01-1790.