Challenges and solutions in measuring computer power supply efficiency for 80 PLUS® certification

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Publication Type Journal Article
School or College College of Engineering
Department Electrical & Computer Engineering
Creator Khan, Faisal Habib
Other Author Geist, T.; Vairamohan, B.; Fortenbery, B.; Hubbard, E.
Title Challenges and solutions in measuring computer power supply efficiency for 80 PLUS® certification
Date 2009-02
Description This paper discusses the techniques, challenges, and results of measuring computer power supply (CPS) efficiency, power factor (PF), and input harmonic currents for the 80 PLUS® program since its beginning in 2002. To date, over 750 power supplies have been tested with many certified for the 80 PLUS® program. In spite of the large number of power supplies tested and years of testing, there is uncertainty within the computer power supply industry about the correct method for measuring efficiency, power factor, and harmonics. Moreover, in order to improve efficiency at light loading, manufacturers are adopting a duty-cycle control approach to power factor correction that raises even more questions on the proper measurement techniques. This paper presents detailed results of years of computer power supply testing, provides a detailed technical analysis on measurement accuracy with background on why specific measurement techniques were adopted, and looks to the future on upcoming technical difficulties and offers solutions for overcoming these difficulties.
Type Text
Publisher Institute of Electrical and Electronics Engineers (IEEE)
First Page 2079
Last Page 2085
DOI 10.1109/APEC.2009.4802961
Language eng
Conference Title 2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition (APEC); ; Washington, DC, USA
Bibliographic Citation Khan, F. H., Geist, T., Vairamohan, B., Fortenbery, B., & Hubbard, E. (2009). Challenges and solutions in measuring computer power supply efficiency for 80 PLUS® certification. IEEE Applied Power Electronics Conference (APEC), 2079-85. February
Rights Management (c) 2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Format Medium application/pdf
Format Extent 960,170 bytes
Identifier ir-main,14052
ARK ark:/87278/s6sq9hz2
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 706414
Reference URL https://collections.lib.utah.edu/ark:/87278/s6sq9hz2
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