A fuel cell-battery hybrid power supply for portable applications

Today, academic and industrial research is addressed to fuel cell based hybrid power supply in many fields of applications including stationary, automotive and portable electronics. Increasing source runtime, speeding up the transient response while minimizing weight, volume and cost of the power supply system are key requirements of all applications. According to the particular application, the power management system is optimized for a specific feature. In this paper, a fuel cell-battery hybrid power supply for a Digital Camera is proposed, although the control algorithm can be efficiently applied to any portable device. Thanks to an innovative control on the input power, any fuel cell pre-warming phase is not required. The proposed hybrid power supply prevents flooding by controlling the instantaneous fuel cell current. As shown by simulations results, hybrid source performances are neither affected by the fuel cell transient response nor by the battery runtime.

[1]  T. A. Smith,et al.  Using supercapacitors to improve battery performance , 2002, 2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289).

[2]  Ralph E. White,et al.  Power and life extension of battery-ultracapacitor hybrids , 2002 .

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

[4]  Joseph W. Bostaph,et al.  Key requirements of micro fuel cell system for portable electronics , 2002, IECEC '02. 2002 37th Intersociety Energy Conversion Engineering Conference, 2002..

[5]  P. Rastgoufard,et al.  Fuel cell technology: economic, social, and political aspects , 2003, Annual Technical Conference IEEE Region 5, 2003.

[6]  R.A. Dougal,et al.  Active power sharing in hybrid battery/capacitor power sources , 2003, Eighteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2003. APEC '03..

[7]  Shengyi Liu,et al.  Design and analysis of a current-mode controlled battery/ultracapacitor hybrid , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..

[8]  L. P. Jarvis,et al.  Hybrid power source for manportable applications , 2003 .

[9]  A. T-Raissi,et al.  Current technology of fuel cell systems , 1997, IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203).