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- Jung, Jee-Hoon
- Advanced Power Interface & Power Electronics Lab.
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Spread-Spectrum Technique Employing Phase-Shift Modulation to Reduce EM Noise for Parallel-Series LLC Resonant Converter
- Author(s)
- Park, Hwa-Pyeong, Kim, Mina, Jung, Jee-Hoon
- Issued Date
- 2019-02
- Citation
- IEEE TRANSACTIONS ON POWER ELECTRONICS, v.34, no.2, pp.1026 - 1031
- Abstract
- A spread-spectrum technique (SST) has been developed to mitigate an electromagnetic interference in power converters. However, for resonant converters using a pulse-frequency modulation, it is difficult to regulate its output voltage with the SST, because the switching-frequency variation according to the spread spectrum induces large output-voltage fluctuation. In this letter, an enhanced phase-shift algorithm of the frequency modulation of the SST and a parallel-series structure for an LLC resonant converter are proposed to obtain a tight output-voltage regulation under the spread-spectrum operation. The performance of the proposed methods is experimentally verified using a 600-W prototype parallel-series LLC resonant converter.
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- ISSN
- 0885-8993
- Keyword (Author)
- Electromagnetic interference (EMI), LLC resonant converter, output-voltage regulation, spread spectrum
- Keyword
- OPTIMIZATION, EMISSION, DESIGN
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