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A novel zero-voltage-transition bridgeless PFC with reduced conduction losses

Haghi, R ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1109/PEDSTC.2011.5742487
  3. Publisher: 2011
  4. Abstract:
  5. In this paper, a new zero-voltage-switching high power-factor (PF) rectifier with Line-Modulated Fixed-Off-Time current control is introduced, that off time is a function of the instantaneous line voltage. The auxiliary circuit provides soft switching for all semiconductor devices, without any extra current and voltage stress on the main switches. The proposed converter is bridgeless, and all semiconductor devices are soft switched. In addition, there is no extra stress on the switches. Thus, the conduction and switching losses are reduced and maximum efficiency is achieved. A 250W, with an input ac voltage of 90265 Vrms and an output voltage 400 Vdc, 100 kHz is designed and simulated to verify the system performance
  6. Keywords:
  7. Power-factor correction (PFC) ; Ac voltage ; Auxiliary circuits ; BridgelessPFC ; Conduction loss ; Current control ; High-power ; Line voltage ; Maximum Efficiency ; OFF time ; Output voltages ; Switching loss ; Voltage stress ; Zero voltage transition ; Zero-voltage-transition (ZVT) ; Power electronics ; Semiconductor switches ; Soft switching ; Zero voltage switching ; Electric rectifiers
  8. Source: 2011 2nd Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2011, 16 February 2011 through 17 February 2011 ; February , 2011 , Pages 587-592 ; 9781612844213 (ISBN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5742487