Energy management controller for fuel cell hybrid electric vehicle based on sat-nav data

Yousif Al-sagheer*, Robert Steinberger-Wilckens

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)
224 Downloads (Pure)


The hybridization of fuel cells (FC) and battery in electric vehicles necessitates designing an energy management system (EMS) for optimal energy use of the two power sources. The EMS represents a high-level controller (HLC) calculating the optimal power split between the two power sources, using a prediction model for the vehicle's electric load over a planned journey trajectory. However, the instantaneous actual power demand of the vehicle is likely to deviate from the prediction due to varying traffic circumstances. This power offset needs to be compensated for whilst the optimality is still considered. A control approach is proposed here that converts the optimal power split into a dimensionless power split ratio (PSR). This ratio is passed to a low-level controller (LLC) to be implemented as a set-point. The LLC is responsible for simultaneously controlling the power of the FC and the battery using solely one control element, which is the DC-DC boost converter. The PSR will be maintained whatever the actual power demand of the vehicle is. This approach will result in a fully controlled optimal power utilization, so that the high efficiency of the battery and the extended range enabled by the FC system are used to best effect.

Original languageEnglish
Pages (from-to)420-430
Number of pages11
JournalFuel Cells
Issue number4
Early online date23 Apr 2020
Publication statusPublished - 27 Aug 2020
EventEuropean Fuel Cell Forum 2019, Lucerne - KKL, Lucerne, Switzerland
Duration: 3 Jul 20195 Jul 2019

Bibliographical note

Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim


  • Battery Electric Vehicle
  • DC-DC Converter
  • Electric Powertrain Control
  • Energy Management
  • Fuel Cell Hybrid Electric Vehicle
  • Fuel Cell Power Control
  • Fuel Cell Systems
  • Fuel Cells
  • Power Split Control

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology


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