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Investigation of high frequency AC power distribution benefits for the automobile auxiliary electrical system
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Antaloae, Ciprian, Vaughan, Nicholas D. and Marco, James (2010) Investigation of high frequency AC power distribution benefits for the automobile auxiliary electrical system. SAE International Journal of Passenger Cars- Electronic and Electrical Systems, Vol.3 (No.1). pp. 109-121. doi:10.4271/2010-01-1322 ISSN 1946-4622.
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Official URL: http://saepcelec.saejournals.org/
Abstract
This paper aims to indicate the advantages and any drawbacks of high frequency alternating current (HFAC) power for vehicle auxiliary electrical systems. Generally, benefits of HFAC include efficient power distribution and transformation, space and weight saving and load galvanic isolation. In addition, HFAC bus topologies are distributed to the point of use, lending the system to easy fault detection. The paper is structured as follows: first, the main findings of the most relevant automotive HFAC studies are outlined. Next, an HFAC architecture is proposed which is compared to the existing 14V and proposed 42V centralised DC networks in terms of power distribution efficiency and wiring harness weight saving. For this analysis, the case study of a medium-sized passenger vehicle is considered, and a group of intermittent and continuous auxiliary loads with a cumulative power of 2.8kW. The calculations over a 1200s drive cycle show that the power distribution efficiency for a 50kHz, 100V AC power bus increases by 90 per cent and 80 per cent compared to 14V and 42V DC topologies, respectively, and the wiring copper weight drops significantly by 70 per cent and 30 per cent, respectively.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | SAE International Journal of Passenger Cars- Electronic and Electrical Systems | ||||
Publisher: | S A E Inc. | ||||
ISSN: | 1946-4622 | ||||
Official Date: | August 2010 | ||||
Dates: |
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Volume: | Vol.3 | ||||
Number: | No.1 | ||||
Page Range: | pp. 109-121 | ||||
DOI: | 10.4271/2010-01-1322 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Description: | Presented as a paper at SAE 2010 World Congress & Exhibition, 13 April 2010, Detroit, Michigan, United States |
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