Converter Loss Evaluation of Flyback Converter Applying Power Decoupling Capability with ZVS operation

Konferenz: PCIM Europe 2019 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07.05.2019 - 09.05.2019 in Nürnberg, Deutschland

Tagungsband: PCIM Europe 2019

Seiten: 8Sprache: EnglischTyp: PDF

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Watanabe, Hiroki; Itoh, Jun-ichi (Nagaoka University of Technology, Japan)
Nagai, Shinichiro; Koike, Naoki (Pony Electric Co. Ltd, Japan)

In this paper, the converter loss analysis of a fly-back converter with an active power decoupling capability is discussed. The proposed fly-back converter achieves the double-line frequency power ripple compensation using small capacitor without the additional components and the complicate control. Furthermore, the fly-back converter is operated under the Zero Voltage Switching (ZVS) by the quasi-resonance (QR) control based on the Boundary Current Mode (BCM). In this paper, the converter loss analysis of the proposed converter focusing on the conduction loss is demonstrated by the mathematical formula. As an experimental result, the constant input power is obtained by small DC-link capacitor of 30 muF when the output power is the 300 W. In addition, the 96.0% of the maximum efficiency is obtained including fly-back converter and the voltage source inverter. Finally, it is confirmed that the calculation value of the conduction loss is approximately matched to the simulation result.