A switched-winding transformer with low quiescent loss to meet the level VI efficiency standard at high power density

Weston D. Braun, Minjie Chen, David J. Perreault

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Many control and monitoring applications including thermostats, doorbells, and security systems utilize 60 Hz transformers with grid-voltage inputs and 16 V to 24 V ac outputs. The new DOE Level VI efficiency standard places stringent requirements on the no-load quiescent loss of grid-interface power supplies, including these low-voltage transformers. This paper explores a low-cost but highly effective approach to reduce the quiescent loss and improve the power density of these transformers while meeting the Level VI efficiency standard. By reconfiguring windings based on the operating power level, one can achieve higher average efficiency, lower quiescent loss, and higher power density. It is experimentally demonstrated that compared to a conventional transformer design that meets the new Level VI standard, the proposed switched-winding transformer approach can more than double the achievable transformer power rating at the same size, weight and core, while requiring only a modest increase in complexity.

Original languageEnglish (US)
Title of host publication2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1642-1648
Number of pages7
ISBN (Electronic)9781509029983
DOIs
StatePublished - Nov 3 2017
Event9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017 - Cincinnati, United States
Duration: Oct 1 2017Oct 5 2017

Publication series

Name2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017
Volume2017-January

Other

Other9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017
CountryUnited States
CityCincinnati
Period10/1/1710/5/17

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Renewable Energy, Sustainability and the Environment
  • Control and Optimization

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    Braun, W. D., Chen, M., & Perreault, D. J. (2017). A switched-winding transformer with low quiescent loss to meet the level VI efficiency standard at high power density. In 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017 (pp. 1642-1648). [8095989] (2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017; Vol. 2017-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2017.8095989