Voltage control for enhanced power electronic efficiency in series hybrid electric vehicles

File Description SizeFormat 
PE_Final_080816.pdfAccepted version3.3 MBAdobe PDFDownload
Title: Voltage control for enhanced power electronic efficiency in series hybrid electric vehicles
Author(s): Roche, M
Shabbir, W
Evangelou, SA
Item Type: Journal Article
Abstract: The paper presents a DC-link voltage control scheme by which the power losses associated with the power electronic converters of a series Hybrid Electric Vehicle (HEV) powertrain are reduced substantially. A DC-link commonly connects the three powertrain branches associated with series HEVs, presently interfaced by a three-phase rectifier, a threephase inverter and a Dual Active Bridge (DAB) DC/DC converter. Dynamic efficiency models of the converters are developed and a methodology is proposed by which the DC-link voltage is varied with respect to its default value, based on the ratio between the battery and DC-link voltages. The voltage control scheme introduced varies the phase shift between the gating signals of the two DAB converter bridges, proportionally to the ratio of converter input voltage to output voltage referred to the transformer primary. This level of instantaneous control forces the converter to operate in boost mode when the battery charges and buck mode when the battery discharges, allowing the converter to persistently avoid Hard Switching (HS) losses over its entire operating range. The control scheme is tested in simulations with a full HEV model by comparing its performance with constant voltage and unity voltage conversion ratio PI control schemes. The scheme proves most effective for vehicles with high hybridization factor, driving in an urban environment.
Publication Date: 10-Aug-2016
Date of Acceptance: 13-Jul-2016
URI: http://hdl.handle.net/10044/1/38845
DOI: https://dx.doi.org/10.1109/TVT.2016.2599153
ISSN: 1939-9359
Publisher: IEEE
Start Page: 3645
End Page: 3658
Journal / Book Title: IEEE Transactions on Vehicular Technology
Volume: 66
Issue: 5
Copyright Statement: © 2016 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications standards/publications/rights/index.html for more information.
Keywords: Science & Technology
Engineering, Electrical & Electronic
Transportation Science & Technology
Automotive electronics
DC-DC power converters
energy efficiency
hybrid electric vehicles
voltage control
09 Engineering
08 Information And Computing Sciences
10 Technology
Automobile Design & Engineering
Publication Status: Published
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering

Items in Spiral are protected by copyright, with all rights reserved, unless otherwise indicated.

Creative Commons