A minimum power-processing stage fuel cell energy system based on a boost-inverter with a bi-directional back-up battery storage

When low-voltage unregulated fuel cell (FC) output is conditioned to generate AC power, two stages are required: a boost stage and an inversion one. In this paper, the boost-inverter topology that achieves both boosting and inversion functions in a single-stage is used to develop an FC-based energy system which offers high conversion efficiency, low-cost and compactness. The proposed system incorporates additional battery-based energy storage and a DC-DC bi-directional converter to support instantaneous load changes. The output voltage of the boost-inverter is voltage-mode controlled and the DC-DC bidirectional converter is current-mode controlled. The load low-frequency current ripple is supplied by the battery which minimizes the effects of such ripple being drawn directly from the FC itself. Analysis, simulation and experimental results are presented to confirm the operational performance of the proposed system.

[1]  P. Thounthong,et al.  Utilizing fuel cell and supercapacitors for automotive hybrid electrical system , 2005, Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005. APEC 2005..

[2]  E. Lefeuvre,et al.  A new control strategy for the boost DC-AC inverter , 2001, 2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230).

[3]  Marcelo Godoy Simões,et al.  Simulation of fuel-cell stacks using a computer-controlled power rectifier with the purposes of actual high-power injection applications , 2003 .

[4]  F. Blaabjerg,et al.  A review of single-phase grid-connected inverters for photovoltaic modules , 2005, IEEE Transactions on Industry Applications.

[5]  S.K. Mazumder,et al.  A Ripple-Mitigating and Energy-Efficient Fuel Cell Power-Conditioning System , 2007, IEEE Transactions on Power Electronics.

[6]  Leon M. Tolbert,et al.  Fuel cell power conditioning for electric power applications: a summary , 2007 .

[7]  J. Jerome,et al.  A novel control strategy for the boost DC - AC inverter , 2006, 2006 India International Conference on Power Electronics.

[8]  M. Thompson,et al.  DC-DC boost converter design for Kettering Universitys GEM fuel cell vehicle , 2005, Proceedings Electrical Insulation Conference and Electrical Manufacturing Expo, 2005..

[9]  Xinbo Ruan,et al.  Power Management for Fuel-Cell Power System Cold Start , 2009, IEEE Transactions on Power Electronics.

[10]  Ching-Tsai Pan,et al.  A High-Efficiency High Step-Up Converter With Low Switch Voltage Stress for Fuel-Cell System Applications , 2010, IEEE Transactions on Industrial Electronics.

[11]  I. Barbi,et al.  Sliding mode controller for the boost inverter , 1996, V IEEE International Power Electronics Congress Technical Proceedings, CIEP 96.

[12]  Baden Switzerland.  Two-Stage and Integrated Fuel Cell Power Conditioner: Performance Comparison , 2009 .

[13]  A. Visioli.  Modified anti-windup scheme for PID controllers , 2003 .

[14]  Charles E. Hall,et al.  Authors' reply to comments on "variable-structure PID control to prevent integrator windup" , 2001, IEEE Transactions on Industrial Electronics.

[15]  K.M. Rahman,et al.  Voltage mode control of single phase boost inverter , 2008, 2008 International Conference on Electrical and Computer Engineering.

[16]  G. R. Duan.  Parametric eigenstructure assignment via output feedback based on singular value decompositions , 2003 .

[17]  R. O. Caceres,et al.  A boost DC-AC converter: analysis, design, and experimentation , 1999 .

[18]  P. Thounthong,et al.  Fuel cell high-power applications , 2009, IEEE Industrial Electronics Magazine.

[19]  J. Lai,et al.  Fuel cell and power conditioning system interactions , 2005, Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005. APEC 2005..

[20]  Sewan Choi,et al.  A 10-kW SOFC low-Voltage battery hybrid power conditioning system for residential use , 2006, IEEE Transactions on Energy Conversion.

[21]  Jih-Sheng Lai,et al.  Power conditioning circuit topologies , 2009, IEEE Industrial Electronics Magazine.

[22]  Douglas J. Nelson,et al.  Fuel cell systems: efficient, flexible energy conversion for the 21st century , 2001, Proc. IEEE.

[23]  I. Barbi,et al.  A boost DC-AC converter: operation, analysis, control and experimentation , 1995, Proceedings of IECON '95 - 21st Annual Conference on IEEE Industrial Electronics.

[24]  Jiann-Fuh Chen,et al.  A novel DC/AC boost inverter , 2002, IECEC '02. 2002 37th Intersociety Energy Conversion Engineering Conference, 2002..

[25]  E. Gubia,et al.  Boost DC-AC inverter: a new control strategy , 2005, IEEE Transactions on Power Electronics.