Survey of DC-DC non-isolated topologies for unidirectional power flow in fuel cell vehicles

Mahajan Sagar Bhaskar, Vigna K. Ramachandaramurthy, Sanjeevikumar Padmanaban, Frede Blaabjerg, Dan M. Ionel, Massimo Mitolo, Dhafer Almakhles

Research output: Contribution to journalArticlepeer-review

84 Scopus citations


The automobile companies are focusing on recent technologies such as growing Hydrogen (H2) and Fuel Cell (FC) Vehicular Power Train (VPT) to improve the Tank-To-Wheel (TTW) efficiency. Benefits, the lower cost, ‘Eco’ friendly, zero-emission and high-power capacity, etc. In the power train of fuel cell vehicles, the DC-DC power converters play a vital role to boost the fuel cell stack voltage. Hence, satisfy the demand of the motor and transmission in the vehicles. Several DC-DC converter topologies have proposed for various vehicular applications like fuel cell, battery, and renewable energy fed hybrid vehicles etc. Most cases, the DC-DC power converters are viable and cost-effective solutions for FC-VPT with reduced size and increased efficiency. This article describes the state-of-the-art in unidirectional non-isolated DC-DC Multistage Power Converter (MPC) topologies for FC-VPT application. The paper presented the comprehensive review, comparison of different topologies and stated the suitability for different vehicular applications. This article also discusses the DC-DC MPC applications more specific to the power train of a small vehicle to large vehicles (bus, trucks etc.). Further, the advantages and disadvantages pointed out with the prominent features for converters. Finally, the classification of the DC-DC converters, its challenges, and applications for FC technology is presented in the review article as state-of-the-art in research.

Original languageEnglish
Pages (from-to)178130-178166
Number of pages37
JournalIEEE Access
StatePublished - 2020

Bibliographical note

Funding Information:
Corresponding authors: Mahajan Sagar Bhaskar ( and Vigna K. Ramachandaramurthy ( This work was supported in part by the Long-Term Research Grant (LRGS), Ministry of Education Malaysia, for the program titled ‘‘Decarbonisation’’ of Grid with an optimal Controller and Energy Management for Energy Storage System in Microgrid Application.

Publisher Copyright:
© 2020 Institute of Electrical and Electronics Engineers Inc.. All rights reserved.


  • DC-DC converter
  • Fuel cell vehicles
  • Multistage power converter
  • Non-isolated
  • Power electronics
  • Unidirectional converters
  • Vehicular power train

ASJC Scopus subject areas

  • Computer Science (all)
  • Materials Science (all)
  • Engineering (all)
  • Electrical and Electronic Engineering


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