Design and Control of Fuel Cell System for Transport Applica

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Furthermore two overall goals of the project will be presented. The initial problem is to design and control a fuel cell system for transport applications. In the previous chapters the fuel cell technology has been presented from an overall market perspective down to a detailed discussion of the PEMFC ( Proton Exchange Membrane Fuel Cell ). Furthermore the requirements for the fuel cell system has been presented, which will be summarized in the following. 1 The Load System Fuel cell systems have many potential markets to enter.

5 The programs are included on the CD-rom: . Computer Programs . However it should be noticed that the programs cannot run on a ordinary PC as the DSP-unit has to be present. 4A 38 CHAPTER 7. 8: Shows a sketch of the electronic setup. The second error level disconnect all power supply to the system components and all valves return to their initial position, which can be triggered by the following errors: • H igh Level Hydrogen; Two hydrogen sensors have been mounted, one inside the fume cupboard, and one outside.

3 Sub Conclusion In this chapter a discrete model of the fuel cell has been developed to observe the concentration of oxygen in the cathode gas during transients. Furthermore a model of the electrical side of the fuel cell has been developed. Finally a DC/DC converter has been designed which is controllable within a band width of 50 [rad/s] to emulate a load on the fuel cell. m 56 CHAPTER 9. 11: A closed loop bode plot of the fuel cell system and DC-DC converter when the current out of fuel cell is controlled Chapter 10 Modelling and Control of Cathode Side This chapter presents the air side of the fuel cell system.

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