Analysis and design of interleaved current-fed phase-modulated single-phase unfolding inverter

This paper presents a novel single-phase current-fed phase-modulated interleaved unfolding inverter system for fuel cell applications. Two active-clamped zero-voltage switching (ZVS) current-fed half-bridge isolated converters are interleaved in parallel input and series output configuration. Phase modulation is proposed to control these two converter cells which generate rectified sinusoidal pattern at the dc link. A simple H-bridge unfolding dc-ac inversion is used to produce single phase sine voltage at line frequency switching using square wave control. This not only simplifies the inversion stage in terms of modulation but also reduces the switching losses. Direct front-end current-fed based unfolding inverter is not reported in literature. Detailed analysis and design of the proposed single-phase current-fed unfolding inverter has been presented. Simulation results are illustrated using PSIM9.0.4 to support the analysis and design.

[1]  Jih-Sheng Lai,et al.  Derivation, Analysis, and Implementation of a Boost–Buck Converter-Based High-Efficiency PV Inverter , 2012, IEEE Transactions on Power Electronics.

[2]  Sang-Kyoo Han,et al.  A new active clamping zero-voltage switching PWM current-fed half-bridge converter , 2005, IEEE Transactions on Power Electronics.

[3]  Chung-Yuen Won,et al.  An active clamping current-fed half-bridge converter for fuel-cell generation systems , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[4]  Chung-Yuen Won,et al.  Soft switching interleaved active clamp flyback inverter for a photovoltaic AC module system , 2011, Proceedings of the 2011 14th European Conference on Power Electronics and Applications.

[5]  Peter J. Wolfs.  A current-sourced DC-DC converter derived via the duality principle from the half-bridge converter , 1993, IEEE Trans. Ind. Electron..

[6]  Akshay Kumar Rathore,et al.  Analysis, Design and Experimental Results of Wide Range ZVS Active-Clamped L-L Type Current-Fed DC/DC Converter for Fuel Cells to Utility Interface , 2012, IEEE Transactions on Industrial Electronics.

[7]  P.N. Enjeti,et al.  Development of a low cost fuel cell inverter system with DSP control , 2004, IEEE Transactions on Power Electronics.

[8]  Kaustuva Acharya,et al.  A Universal Grid-Connected Fuel-Cell Inverter for Residential Application , 2010, IEEE Transactions on Industrial Electronics.

[9]  Friedrich Wilhelm Fuchs,et al.  Converter Systems for Fuel Cells in the Medium Power Range—A Comparative Study , 2010, IEEE Transactions on Industrial Electronics.

[10]  F.W. Fuchs,et al.  Clamping for current-fed de/dc converters with recovery of clamping energy in fuel cell inverter systems , 2007, 2007 European Conference on Power Electronics and Applications.

[11]  Quan Li,et al.  A Current Fed Two-Inductor Boost Converter With an Integrated Magnetic Structure and Passive Lossless Snubbers for Photovoltaic Module Integrated Converter Applications , 2007, IEEE Transactions on Power Electronics.

[12]  P. Kerin.  High-Frequency Link Inverter for Fuel Cells Based on Multiple-Carrier PWM , 2004 .

[13]  F.Z. Peng,et al.  Comparison of Traditional Inverters and $Z$ -Source Inverter for Fuel Cell Vehicles , 2004, IEEE Transactions on Power Electronics.

[14]  Haibing Hu,et al.  An integrated three-port inverter for stand-alone PV applications , 2010, 2010 IEEE Energy Conversion Congress and Exposition.