Swinging bus technique for ripple current elimination in Fuel Cell power conversion

A swinging bus scheme is investigated in this work to eliminate undesirable low frequency ripple current reflection in Fuel Cells (FCs). The swinging bus is thoroughly characterized under various loading conditions to establish a behavioral model. As a result, a general control scheme and signal processing for buck- and boost- derived power converters is obtained. A digital filter in the form of a Moving Averaging Filter (MAF) proves to be a fundamental component of the control loop, a significant practical advancement in control for low frequency ripple elimination. A formal mathematical demonstration is included and experimental results are presented to validate the technique and illustrate its benefits.

[1]  Steven W. Smith,et al.  The Scientist and Engineer's Guide to Digital Signal Processing , 1997 .

[2]  Martin Ordonez Swinging bus technique for ripple current elimination in Fuel Cell power conversion , 2011 .

[3]  Caisheng Wang,et al.  Fuel cells and load transients , 2007, IEEE Power and Energy Magazine.

[4]  M Ordonez,et al.  Soft-Switching Techniques for Efficiency Gains in Full-Bridge Fuel Cell Power Conversion , 2011, IEEE Transactions on Power Electronics.

[5]  Massimo Vitelli,et al.  Low-Frequency Current Oscillations and Maximum Power Point Tracking in Grid-Connected Fuel-Cell-Based Systems , 2010, IEEE Transactions on Industrial Electronics.

[6]  Minsoo Jang,et al.  A Single-Stage Fuel Cell Energy System Based on a Buck--Boost Inverter with a Backup Energy Storage Unit , 2012, IEEE Transactions on Power Electronics.

[7]  J.-i. Itoh,et al.  Ripple Current Reduction of a Fuel Cell for a Single-Phase Isolated Converter Using a DC Active Filter With a Center Tap , 2009, IEEE Transactions on Power Electronics.

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

[9]  F.C. Lee,et al.  Design considerations for high-voltage high-power full-bridge zero-voltage-switched PWM converter , 1990, Fifth Annual Proceedings on Applied Power Electronics Conference and Exposition.

[10]  Pablo Fernandez-Comesana,et al.  A Signal-Processing Adaptive Algorithm for Selective Current Harmonic Cancellation in Active Power Filters , 2009, IEEE Transactions on Industrial Electronics.

[11]  Jih-Sheng Lai,et al.  Low Frequency Current Ripple Reduction Technique With Active Control in a Fuel Cell Power System With Inverter Load , 2007, IEEE Transactions on Power Electronics.

[12]  Siew-Chong Tan,et al.  Mitigation of Low-Frequency Current Ripple in Fuel-Cell Inverter Systems Through Waveform Control , 2013, IEEE Transactions on Power Electronics.

[13]  Robert W. Erickson,et al.  Self-tuning digitally controlled low-harmonic rectifier having fast dynamic response , 2003 .

[14]  P.N. Enjeti,et al.  Development of an equivalent circuit model of a fuel cell to evaluate the effects of inverter ripple current , 2004, Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04..

[15]  Rong-Jong Wai,et al.  Active Low-Frequency Ripple Control for Clean-Energy Power-Conditioning Mechanism , 2010, IEEE Transactions on Industrial Electronics.

[16]  Yujin Song,et al.  A Power Control Scheme to Improve the Performance of a Fuel Cell Hybrid Power , 2007, 2007 IEEE Power Electronics Specialists Conference.

[17]  Minsoo Jang,et al.  A Minimum Power-Processing-Stage Fuel-Cell Energy System Based on a Boost-Inverter With a Bidirectional Backup Battery Storage , 2011, IEEE Transactions on Power Electronics.

[18]  Minsoo Jang,et al.  A Single-Phase Grid-Connected Fuel Cell System Based on a Boost-Inverter , 2013, IEEE Transactions on Power Electronics.