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Søren Juhl Andreasen 1 HTPEM Fuel Cells - Analysis of usage in mobile applications - ∙Introduction to the Institute of Energy Technology, Aalborg University,

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Presentation on theme: "Søren Juhl Andreasen 1 HTPEM Fuel Cells - Analysis of usage in mobile applications - ∙Introduction to the Institute of Energy Technology, Aalborg University,"— Presentation transcript:

1 Søren Juhl Andreasen 1 HTPEM Fuel Cells - Analysis of usage in mobile applications - ∙Introduction to the Institute of Energy Technology, Aalborg University, Denmark ▫Research areas ▫Educations ∙Recent and current research activities ▫Master thesis, 500 W PEM Fuel Cell system ▫Reseach assistent, 3 kW DMFC UPS ▫PhD project : Fuel Cell Shaft Power Pack

2 Søren Juhl Andreasen 2 Development in Denmark from 80’ties to 90’ties: Central generation Local generation Source:

3 Søren Juhl Andreasen 3 Research program organisation Institute of Energy Technology Electric Power Systems Power Electronic Systems Electrical Machines Fluid Power Systems Fluid Mechanics and Combustion Thermal Energy Systems Fuel Cell Research Program Industrial PartnersResearch Institutions

4 Søren Juhl Andreasen 4 Overview of Educations at IET BASIC YEAR 1st and 2nd sem 3rd to 5th sem Electronics and Electrical Engineering Electrical Energy Technology (EET) 6th to 7th sem 8th to 10th sem High Voltage Engineering and Power systems Power Electronics and Drives Sustainable Energy Engineering (HyTec) Fluids and Combustion Engineering (FACE) Industry and export (In the future this will most likely be “Energy”) Intro semester B.Sc. & Honer Electro Mechanical System Design (EMSD) Windpower From next year an International M.Sc. Specialization on Windpower will be included! Within the following years an energy study board will be formed to enhance the fundamental education (3rd to 5th semester) to be directed more towards energy technology. Mechanical Engineering Electrical Engineering

5 Søren Juhl Andreasen 5 Fuel cell research programme Test systems ∙Mission ▫To promote sustainable energy production by conducting definitive leading edge research at international level in fuel cell technology. ∙Main Research Areas ▫Fluid mechanics ▫System modeling and optimization ▫Advanced system control ▫Power electronics

6 Søren Juhl Andreasen 6 Stack and system test facilities Single cell test facilities -HT-PEM -DMFC System test facilities Advanced stack tests -Gas composition -Humidity (anode, cathode) -Heat management

7 Søren Juhl Andreasen 7 Design and Control of a 500W PEM Fuel Cell System ∙Master of Science in Mechanical Engineering specialized in Electro-mechanical system design

8 Søren Juhl Andreasen 8 3 kW DMFC Emergency Power Generator (APC) Research assistent, modeling of DMFC, steady state, dynamic, BoP

9 Søren Juhl Andreasen 9 Research Project : Fuel Cell Shaft Power Pack (3. 10 7 DKR) 2 Technical University PhD : Design and control of BoP, Power Electronics and motor design 1 Industrial PhD (Technological Institute of Denmark) : Stack charaterization and diagnostics 2 Mercantile PhD : Focus on the market, up-stream and down-stream 2 Educational institutions (Aalborg University, Copenhagen Business School) 1 GTS Danish Insititue of Technology 1 Component manufacturer (Parker) 3 R&D companies (Dantherm,HIRC,EGJ, H2Logic) 1 Composite materials company (Xperion) 4 Application companies (Electrical bike, Truck, Pallet handler…) 2 Power electronics companies (Migatronic, KK-Electronic)

10 Søren Juhl Andreasen 10 Systemopbygning ∙Possibilities for an overall configuration of a power pack 1.Fuel Cell alone 2.Fuel Cell og DC/DC-converter FCMotorInverterDC/DC DC AC DC FCMotorInverter ACDC Advantages: Very simple system Disadvantages: Very large FC stack ($$ !) FC must handle power peaks High demands for motor and intverer Variating DC voltage Advantages: Simple Steady DC inverter voltage Disadvantages: Very large FC stack ($$ !) FC handles power peaks

11 Søren Juhl Andreasen 11 Systemopbygning 3.Operation with FC, DC/DC-converter and buffer energy storage a)Energy storage : battery b)Energy storage : battery and super capacitor c)Energy storage : super capacitor FC Motor Inverter DC/DC DC ACDC Buffer Adv.: Smaller FC stack Steady DC inverter voltage Super cap. only for power peaks Battery as extra energy storage FC stack charges batteries and supercaps Full control of charging and discharging D.adv.: Exstra charging circuits for battery and supercaps More complicated system FC Motor InverterInverter DC/DC DC AC DC BATDC/DC DC SCAPDC/DC DC Preferable system configuration

12 Søren Juhl Andreasen 12 System, HT-PEM with Reformer ∙Feasible fuels, liquid i.e. methanol (ethanol) ▫Direct Methanol Fuel Cell ▫Fuel cell system with reformer ◦LTPEM (Classic Nafion membran) ◦HTPEM (PBI membrane) ∙High Temperature PEM running on reformed methanol ▫FC operating conditions 120-200 C ▫Methanol reformer temperature 200-250 C ▫Thermal integration ▫Lower cell voltage ▫No CO-poisoning (!) ▫No humidity control -> Very simple stack and system design (!) ▫New technology ▫Potential for improvements ▫Significantly less expensive than Nafion based MEA’s (!) ▫Liquid water must never be present ▫Possible cooling with cathode air ▫Long start-up time ∙FC system and application control ▫Classic linear control. P PI PID control. ss control, observer design ▫Nonlinear control. Lyaponov theory, robust control ▫Optimal control

13 Søren Juhl Andreasen 13 Performance of HTPEM

14 Søren Juhl Andreasen 14 Thanks for your attention www.iet.aau.dk/~sja


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