The energy storage unit is one of the most important subsystems in the structure of hybrid electric vehicles since it directly impacts the performance, fuel economy, cost, and weight of the vehicle. New structures for the energy storage unit, which utilize both batteries and ultracapacitors, are widely under investigation. In order to fully utilize the advantages of each energy storage device, employment of multi-input power converters is inevitable. In this paper, two new double input converters are introduced. Their different operating modes are analyzed and their voltage transfer ratios are derived. Simulation results are used to verify the expected operational characteristics

Meeting Name

IEEE Vehicle Power and Propulsion Conference (2006: Sep. 6-8, Windsor, United Kingdom)


Electrical and Computer Engineering

Keywords and Phrases

DC-DC Power Convertors; Double Input Converter; Energy Storage Unit; Hybrid Electric Vehicles; Secondary Cells; Supercapacitors; Automotive Applications; Hybrid Electric Vehicle; Multiinput; Operating Modes; Operational Characteristics; Ultracapacitors; Voltage Transfer Ratio; DC Power Transmission; Electric Vehicles; Energy Storage; Fuel Economy; Fuel Storage; Propulsion; Virtual Storage; DC-DC Converters

International Standard Book Number (ISBN)


International Standard Serial Number (ISSN)


Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 2006 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Sep 2006