A High-Switching-Frequency Flyback Converter in Resonant Mode
| Autor: | Bobby J. Daniel, Frank B. M. van Horck, Jianting Li, Henk Jan Bergveld |
|---|---|
| Přispěvatelé: | Control Systems, Dynamics and Control for Electrified Automotive Systems |
| Rok vydání: | 2017 |
| Předmět: |
Engineering
Flyback transformer 02 engineering and technology Electromagnetic interference law.invention switching loss Hardware_GENERAL EMI law 0202 electrical engineering electronic engineering information engineering Snubber Electronic engineering Electrical and Electronic Engineering Transformer high switching frequency Leakage inductance Flyback converter business.industry 020208 electrical & electronic engineering Electrical engineering 020206 networking & telecommunications Converters resonant power conversion Flyback regenerative snubber business |
| Zdroj: | IEEE Transactions on Power Electronics, 32(11):7792114, 8582-8592. Institute of Electrical and Electronics Engineers |
| ISSN: | 1941-0107 0885-8993 |
| DOI: | 10.1109/tpel.2016.2642044 |
| Popis: | The demand of miniaturization of power systems has accelerated the research on high-switching-frequency power converters. A flyback converter in resonant mode that features low switching losses, less transformer losses, and low switching noise at high switching frequency is investigated in this paper as an alternative to a conventional quasi-resonant (QR) flyback topology to increase power density. In order to find a compromise between magnet size, electromagnetic interference (EMI), and efficiency, the concept utilizes the resonant behavior between transformer leakage inductance and snubber capacitor to achieve near-zero-voltage switching at both turn-on and turn-off of the primary switch, low core loss due to a continuous transformer magnetizing current, and reduced EMI due to low di / dt and dv / dt values. Meanwhile, the concept uses the regenerative snubber to recycle the transformer leakage energy with two snubber diodes and one snubber capacitor. The proposed concept has been validated on a 340-kHz 65-W prototype. Compared to the conventional QR flyback converter operating at the same switching frequency, the proposed concept has 2% efficiency improvement and better EMI performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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