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Team HydroFly: Fuel Cell

Team HydroFly: Fuel Cell. Team Members: Adam Lint Chris Cockrell Dan Hubbard Sponsors: Dr. Herb Hess Dr. Brian Johnson. Overview. Project Purpose Project Objective Background (Fuel Cell and AMPS) Basic Design Description Additional Design Considerations Schedule and Budgeting.

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Team HydroFly: Fuel Cell

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  1. Team HydroFly: Fuel Cell Team Members: Adam Lint Chris Cockrell Dan Hubbard Sponsors: Dr. Herb Hess Dr. Brian Johnson

  2. Overview • Project Purpose • Project Objective • Background (Fuel Cell and AMPS) • Basic Design Description • Additional Design Considerations • Schedule and Budgeting

  3. Purpose: Why are we interfacing the fuel cell to the Analog Model Power System? Alternative Energy Source Flexibility for the AMPS

  4. Objective:Interface the Fuel Cell to the Analog Model Power System AMPS ? Fuel Cell

  5. What is a Hydrogen Fuel Cell? • Different Types • Phosphoric Acid • Proton exchange membrane (PEM) • Solid Oxide (SOFC) • Molten Carbonate (MCFC) • Alkaline • Proton exchange membrane (PEM) • Low temperature • Low Noise • Zero Harmful Emissions (water and heat) • Portable • Capacity of up to 10KW

  6. What is a Hydrogen Fuel Cell? • Operation of a PEM fuel cell • Chemical reaction similar to a battery • Does not need to be “charged” as long as hydrogen is supplied

  7. Avista SR-12 PEM Hydrogen Fuel Cell • Donated by Genesis FuelTech in 2003 • 500W Peak Power • DC output (23V - 43V) • 12 Fuel Cell Cartridges • Spare Parts Available • 80°C Operating Temp.

  8. Analog Model Power System • Acquired from Idaho Power in the mid 1990’s • Models a typical power transmission system Added Features: 1. A fault matrix in which three faults can be placed on the system, either simultaneously or in an evolving manner. 2. The ability to load impedance faults onto the system. 3. SEL (Schweitzer Engineering Labs) relays into the system.

  9. DC to DC Converter AMPS 12V/24V DC Fuel Cell DC DC 23-43V DC

  10. DC/DC Converter • Purpose: Regulate output voltage from fuel cell to a constant DC voltage • Requirements • Input Voltage: 23-43 VDC (min) • Input Current: 25 A (min) • Power Rating: 500 W (min) • Output Voltage: 12/24 VDC

  11. DC/DC Converter • Wide Input Range (20-45 V) • 600 W Power Rating • 12 VDC Output • Audible/Visual Indicators MajorVTC600-32-12 DC/DC Voltage Converter

  12. DC/DC Converter MajorVTC600-32-12 DC/DC Voltage Converter

  13. DC to AC Converter 12V AC 3-phase Synchronous Freq. AMPS 12V DC Fuel Cell DC DC DC AC 23-43V DC

  14. DC to AC Converter • Purchase from Tier Electronics in Oconomowoc, WI • Specifications: • Input Voltage: 12 VDC +/- 0.5 VDC • Input Current: 50 A Continuous/ 55 A Peak • Power Rating: 500 W • Output Voltage: 12 VAC 3-phase @ 60 Hz

  15. DC to AC Converter Mini Universal Power Converter (UPC) from Tier Electronics Features: • 40MHz Re-Programmable TI-2400 series DSP • 24KHz PWM Switching frequency (offers greater control) • Communication Module for asynchronous serial communication • Expansion capabilities for monitoring and controlling external signals

  16. Filtering Why? Distortion on the 3-phase AC voltage Corrected by using a simple LC Filter

  17. Transformer: 12V to 208V AC 208V AC 3-phase Synchronous Freq. 12V AC 3-phase Synchronous Freq. AMPS 12V DC 12:208 Fuel Cell Trans-former DC DC DC AC 23-43V DC :

  18. Transformer 3 Phase Delta to Delta Configuration Input: 12 Volts AC Output: 208 Volts AC

  19. BLOCK DIAGRAM 208V AC 3-phase Synchronous Freq. 12V AC 3-phase Synchronous Freq. AMPS 12V DC 12:208 Fuel Cell Trans-former DC DC DC AC 23-43V DC : Synchronous Signals Voltage/Current Readings

  20. Synchronization • To correctly provide supplemental power to AMPS, our AC signal must be in phase with the system • Why? • If the two signals are out of phase when connected to each other, massive current spikes will appear and it will take longer for the signal to stabilize.

  21. Synchronization • Phase-Lock Loop • Fast Response • Will accurately correct any error • Zero-Point Crossings • Sample Rate • Frequency • 3-Phase Timings

  22. Microprocessor TI 2400 Series DSP • 16-bit data Fixed-Point • 20-40 MIPS • On-Chip Flash Memory • Other Features: A/D Converter, CAN Module, SCI, SPI,

  23. Device Protection Protect from what? Incorrect power flow Exceeding component rating How to protect it? Switches (Control) Fuses

  24. Schedule

  25. Budget *Cost divided evenly between Fuel Cell and Flywheel Groups

  26. Questions?

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