LLC series resonant converter with auxiliary circuit for hold-up time
- 1 October 2009
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 02750473,p. 1-4
- https://doi.org/10.1109/intlec.2009.5351749
Abstract
Although LLC series resonant converter has advantages of wide operation range and high efficiency, hold up time requirement makes it difficult to optimal design at normal operating condition, results in increasing transformer size and low efficiency. In this paper, LLC series resonant converter with auxiliary circuit is proposed. Compare with conventional LLC series resonant converter, higher gain at the same frequency can be achieved because the proposed converter has a current boost up capability. Therefore, even if ac line is turned off, switching frequency range of LLC series resonant converter can be reduced. With the auxiliary circuit, LLC series resonant converter can achieve high power density and high efficiency at normal operation condition.Keywords
This publication has 2 references indexed in Scilit:
- Design Considerations for LLC Series-Resonant Converter in Two-Resonant RegionsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- A complete DC analysis of the series resonant converterPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1982