Paper Info
Title
Room-temperature fuel cells and their integration into portable and embedded systems
Abstract
Direct methanol fuel cells (DMFCs) are a promising next-generation energy source for portable applications, due to their high energy density and the ease of handling of the liquid fuel. However, the limited range of output power obtainable from a fuel cell requires hybridization the introduction of a battery to form a stand-alone portable power source. Furthermore, the stringent operating conditions to be met by active DMFC systems mandate complicated balance of plant (BOP) control. We present a complete hybrid active DMFC system design and implementation in which a DMFC stack and a li-ion battery are linked by a hybridization circuit to share the applied load to exploit high energy density of the fuel cell and high power density of the battery. We describe systems for fuel delivery, air supply, temperature management, current and voltage measurement, DC-DC conversion and power distribution, motor driving, battery charge management, DMFC and circuit protection, and control of the DMFC and battery as a hybrid. We have designed and implemented an embedded system controller that consists of a 32-bit microcontroller, running under a real-time operating system, that incorporating multiple cascaded feedback control loops which manage the dynamics of BOP control. We demonstrate reliable and efficient maintenance of a constant fuel cell output current in spite of severe fluctuation of the load current.
Year
DOI
Venue
2010
10.1109/ASPDAC.2010.5419918
ASP-DAC
Keywords
Field
DocType
li-ion battery,battery charge management,dc-dc conversion,high energy density,next- generation energy source,balance of plant control,fuel delivery,battery charge measurement,liquid fuel,active dmfc system,dc-dc power convertors,hybrid active dmfc system,room-temperature fuel cell,stand-alone portable power source,direct methanol fuel cells,constant fuel cell output,direct methanol fuel cell,embedded system,room temperature fuel cells,fuel cell,embedded systems,32-bit microcontroller,methanol,system design,energy minimization,room temperature,feedback control,operant conditioning,real time operating system
Control theory,Methanol fuel,Computer science,Voltage,Electronic engineering,Power density,Microcontroller,Energy source,Battery (electricity),Electrical engineering,Liquid fuel,Embedded system
Conference
ISSN
ISBN
Citations 
2153-6961
978-1-4244-5767-0
2
PageRank 
References 
Authors
0.39
0
4
Name
Order
Citations
PageRank
Naehyuck Chang11985185.85
Jueun Seo220.39
Donghwa Shin339632.34
Younghyun Kim454051.72