Bridgeless buck PFC rectifier

A new bridgeless buck PFC rectifier that substantially improves efficiency at low line of the universal line range is introduced. By eliminating input bridge diodes, the proposed rectifier's efficiency is further improved. Moreover, the rectifier doubles its output voltage, which extends useable energy of the bulk capacitor after a drop-out of the line voltage. The operation and performance of the proposed circuit was verified on a 700-W, universal-line experimental prototype operating at 65 kHz. The measured efficiencies at 50% load from 115-V and 230-V line are both close to 96.4%. The efficiency difference between low line and high line is less than 0.5% at full load. A second-stage half-bridge converter was also included to show that the combined power stages easily meet Climate Saver Computing Initiative Gold Standard.

[1]  V. Grigore,et al.  High power factor rectifier based on buck converter operating in discontinuous capacitor voltage mode , 2000 .

[2]  H. Endo,et al.  A high-power-factor buck converter , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.

[3]  Giorgio Spiazzi,et al.  Analysis of buck converters used as power factor preregulators , 1997, PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972.

[4]  R. Redl,et al.  RMS, DC, peak, and harmonic currents in high-frequency power-factor correctors with capacitive energy storage , 1992, [Proceedings] APEC '92 Seventh Annual Applied Power Electronics Conference and Exposition.

[5]  Milan M. Jovanovic,et al.  Design-Oriented Analysis and Performance Evaluation of Buck PFC Front-End , 2009, 2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition.

[6]  Shu Yuen Ron Hui,et al.  Modeling, analysis, and application of buck converters in discontinuous-input-voltage mode operation , 1997 .

[7]  M. M. Jovanovic,et al.  Design-oriented analysis and performance evaluation of clamped-current-boost input-current shaper for universal-input-voltage range , 1998 .

[8]  A. S. Kislovski,et al.  Input-current-clamping: an inexpensive novel control technique to achieve compliance with harmonic regulations , 1996, Proceedings of Applied Power Electronics Conference. APEC '96.

[9]  Philip T. Krein,et al.  Analysis and applications of a current-sourced buck converter , 2007, APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition.

[10]  R. J. King,et al.  High-performance ripple feedback for the buck unity-power-factor rectifier , 1993, Proceedings of IECON '93 - 19th Annual Conference of IEEE Industrial Electronics.

[11]  Dragan Maksimovic.  Design of the clamped-current high-power-factor boost rectifier , 1994, Proceedings of 1994 IEEE Applied Power Electronics Conference and Exposition - ASPEC'94.

[12]  Chen Bing,et al.  A Novel Single-phase Buck PFC Converter Based on One-cycle Control , 2006, 2006 CES/IEEE 5th International Power Electronics and Motion Control Conference.