Multiconverter System Design for Fuel Cell Buffering and Diagnostics Under UAV Load Profiles

作者：Cooley John J^*; Lindahl Peter; Zimmerman Clarissa L; Cornachione Matthew; Jordan Grant; Shaw Steven R; Leeb Steven B

来源：IEEE Transactions on Power Electronics, 2014, 29(6): 3232-3244.

DOI：10.1109/TPEL.2013.2274600

• Battery
• extra element theorem
• fuel cell
• hybrid
• input filter
• Middlebrook
• multiconverter
• multisource
• unmanned aerial vehicle (UAV)

This paper presents a multisource, multiconverter power system for electrically propelled unmanned aerial vehicles (UAVs) with a focus on promoting fuel cell health. Linearized multiconverter system analysis and the two extra element theorem (2EET) inform a system design for fuel cell current buffering and integral diagnostics. Integral diagnostics is in situ impedance spectroscopy achieved by controlling the power system to superpose a frequency-swept excitation current at the fuel cell terminals. An experimental system demonstrates hybridization of a solid-oxide fuel cell (SOFC) with a lead-acid battery having suitable current buffering and integral diagnostics performance under UAV load profiles. Experimental behavior is demonstrated with an electrically emulated SOFC stack or %26quot;reference simulator.%26quot; Impedance spectroscopy data measured during run-time clearly indicate both degradation and recovery phenomena in the SOFC.

• 出版日期2014-6
• 单位MIT