Interleaved zero-voltage-switching active-clamped current-fed full-bridge isolated dc/dc converter for fuel cell applications: A case study analysis

An interleaved soft-switching active-clamped current-fed full-bridge isolated dc/dc converter has been studied. Its steady-state operation and analysis for wide input voltage and varying power transfer capacity are discussed. Interleaving two full-bridge current-fed converters reduces the input current ripple. Phase-shift modulation with parallel input series output interleaving is adopted. The power density of the converter increases with small devices' ratings and less current/thermal stress on the semiconductor switches. The converter utilizes the energy stored in the transformer leakage and magnetizing inductance to maintain zero-voltage-switching over wide range of source voltage and load variation. It improves the converter efficiency and allows high switching frequency operation.

[1]  Chung-Yuen Won,et al.  Fuel Cell Generation System With a New Active Clamping Current-Fed Half-Bridge Converter , 2007, IEEE Transactions on Energy Conversion.

[2]  Akshay Kumar Rathore,et al.  Interleaved soft-switched active-clamped L–L type current-fed half-bridge DC–DC converter for fuel cell applications , 2009 .

[3]  Yoon-Ho Kim,et al.  A new active clamping zero-voltage switching PWM current-fed half-bridge converter , 2005 .

[4]  V. Meleshin,et al.  Full-bridge isolated current fed converter with active clamp , 1999, APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285).

[5]  Akshay K Rathore,et al.  Analysis and design of zero-voltage-switching current-fed isolated full-bridge Dc/Dc converter , 2011, 2011 IEEE Ninth International Conference on Power Electronics and Drive Systems.

[6]  A.M. Khambadkone,et al.  Analysis and control of isolated current-fed full bridge converter in fuel cell system , 2004, 30th Annual Conference of IEEE Industrial Electronics Society, 2004. IECON 2004.

[7]  B.H. Cho,et al.  A soft-switching active-clamp scheme for isolated full-bridge boost converter , 2004, Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04..

[8]  Jung-Min Kwon,et al.  High Step-Up Active-Clamp Converter With Input-Current Doubler and Output-Voltage Doubler for Fuel Cell Power Systems , 2009 .