Novel interleaved ZVS converter with ripple current cancellation

This paper presents a zero voltage switching (ZVS) converter with interleaved pulse-width modulation scheme. An active clamp circuit is adopted in the proposed converter to recycle the energy stored in the leakage inductor of the transformer and reduce the voltage stress of the main power switch in the converter. The ZVS feature of switches can be achieved due to the resonance during the transition interval of two power switches. Two full-wave rectifiers with ripple current cancellation are connected in parallel at the output side to reduce the current stress of the secondary winding of transformers. Instead of the conventional interleaved forward converter, power switches in the proposed converter can perform the functions of both forward converter and active clamp at the same time. Therefore, the circuit components in the power circuit are less than that of in the conventional interleaved forward converter. The operation principle and system analysis of the proposed converter are provided. Some experimental results for a 240 W (12 V-20 A) prototype are provided to demonstrate the effectiveness of the proposed converter. Copyright © 2008 John Wiley & Sons, Ltd.

[1]  D. Ki-Wai Cheng,et al.  Two-phase forward converter using an integrated magnetic component , 2004, IEEE Transactions on Aerospace and Electronic Systems.

[2]  K.M. Smedley,et al.  A new interleaved forward converter with inherent demagnetizing feature , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[3]  Ivo Barbi,et al.  Novel zero-current-switching PWM converters , 1997, IEEE Trans. Ind. Electron..

[4]  Bor-Ren Lin,et al.  Analysis and implementation of a zero-voltage switching forward converter with a synchronous rectifier , 2005 .

[5]  Milan M. Jovanovic,et al.  Analysis and evaluation of interleaving techniques in forward converters , 1998 .

[6]  Ka Wai Eric Cheng,et al.  Analysis and experimental verification of the linear correlation of the operation condition among the bifurcation points of current-mode-controlled buck-boost converter , 2005, Int. J. Circuit Theory Appl..

[7]  C. K. Michael Tse,et al.  Fast‐scale bifurcation in single‐stage PFC power supplies operating with DCM boost stage and CCM forward stage , 2006, Int. J. Circuit Theory Appl..

[8]  Fred C. Lee,et al.  Soft-switching techniques in PWM converters , 1995, IEEE Trans. Ind. Electron..

[9]  N. Barbi,et al.  A double ZVS-PWM active-clamping forward converter: analysis, design, and experimentation , 2001 .

[10]  C. K. Michael Tse,et al.  Fast‐scale bifurcation in power‐factor‐correction buck‐boost converters and effects of incompatible periodicities , 2006, Int. J. Circuit Theory Appl..

[11]  Xinbo Ruan,et al.  Calculation of the resonant capacitor of the improved current-doubler-rectifier ZVS PWM full-bridge converter , 2004, IEEE Trans. Ind. Electron..

[12]  Gaetano Palumbo,et al.  Efficiency model of boost dc–dc PWM converters , 2005, Int. J. Circuit Theory Appl..

[13]  Ivo Barbi,et al.  A ZVS PWM inverter with active voltage clamping using the reverse recovery energy of the diodes , 2005, IEEE Transactions on Circuits and Systems I: Regular Papers.

[14]  A.M. Khambadkone,et al.  Modelling, Analysis and Design of Cascaded Forward and Interleaved Converter for Powering Future Microprocessors , 2005, 2005 International Conference on Power Electronics and Drives Systems.

[15]  Masato Ogata,et al.  Graph‐theoretical approach to 2‐switch DC–DC converters , 2005, Int. J. Circuit Theory Appl..

[16]  Luo Fang Lin,et al.  Analysis, simulation and verification of a bipolar current source power resonant inverter , 2004 .

[17]  Yim-Shu Lee,et al.  Interleaved three-phase forward converter using integrated transformer , 2005, IEEE Transactions on Industrial Electronics.

[18]  Won-Sup Chung,et al.  A self-driven active clamp forward converter using the auxiliary winding of the power transformer , 2004, IEEE Transactions on Circuits and Systems II: Express Briefs.

[19]  Zhaoming Qian,et al.  Analysis and Design for a New ZVS DC–DC Converter With Active Clamping , 2006, IEEE Transactions on Power Electronics.

[20]  Jian Sun,et al.  Integrated magnetics for current-doubler rectifiers , 2004, IEEE Transactions on Power Electronics.