Microsoft PowerPoint - Design Review Fuel Cell Finished by fionan

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									 Team HydroFly: Fuel Cell                                                   Overview

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




                    Purpose:                                              Objective:
Why are we interfacing the fuel cell to the Analog Model
                                                                 Interface the Fuel Cell to the
                   Power System?                                 Analog Model Power System

         Alternative Energy Source

           Flexibility for the AMPS
                                                                              ?
      What is a Hydrogen Fuel Cell?                           What is a Hydrogen Fuel Cell?
 Different Types                                         Operation of a PEM fuel cell
     •Phosphoric Acid                                        •Chemical reaction similar to a battery
     •Proton exchange membrane (PEM)
                                                             •Does not need to be “charged” as long as hydrogen is supplied
     •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




Avista SR-12 PEM Hydrogen Fuel Cell                            Analog Model Power System
                                                               •Acquired from Idaho Power in the mid 1990’s
                Donated by Genesis FuelTech in 2003
                                                               •Models a typical power transmission system

 •500W Peak Power                                     Added Features:
 •DC output (23V - 43V)
 •12 Fuel Cell Cartridges                             1. A fault matrix in which three
                                                      faults can be placed on the system,
 •Spare Parts Available                               either simultaneously or in an
 •80°C Operating Temp.                                evolving manner.

                                                      2. The ability to load impedance
                                                      faults onto the system.

                                                      3. SEL (Schweitzer Engineering
                                                      Labs) relays into the system.
          DC to DC Converter
                                                                         DC/DC Converter
                                                             • Purpose: Regulate output voltage from fuel cell
                                                               to a constant DC voltage
                      12V/24V DC
                                                             • Requirements
                                                                – Input Voltage: 23-43 VDC (min)
              DC                                                – Input Current: 25 A (min)
                DC
          23-43V DC                                             – Power Rating: 500 W (min)
                                                                – Output Voltage: 12/24 VDC




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

                                     MajorVTC600-32-12                                       MajorVTC600-32-12 DC/DC
                                                                                                 Voltage Converter
                                   DC/DC Voltage Converter
             DC to AC Converter                                                       DC to AC Converter
                                                                           •Purchase from Tier Electronics in Oconomowoc, WI
                                    12V AC 3-phase
                                    Synchronous Freq.

                          12V DC                                           •Specifications:
                                                                              •Input Voltage: 12 VDC +/- 0.5 VDC
                  DC               DC
                    DC               AC
                                                                              •Input Current: 50 A Continuous/ 55 A Peak
              23-43V DC

                                                                              •Power Rating: 500 W
                                                                              •Output Voltage: 12 VAC 3-phase @ 60 Hz




             DC to AC Converter                                                                                Filtering
    Mini Universal Power Converter (UPC) from Tier Electronics
                                                                                •Why?
Features:                                                                           –Distortion on the 3-phase AC voltage
• 40MHz Re-Programmable TI-2400 series DSP                                                         1

• 24KHz PWM Switching frequency (offers greater control)
• Communication Module for asynchronous serial communication                                     0.5

• Expansion capabilities for monitoring and controlling external signals
                                                                                        y ( x)     0




                                                                                                 0.5




                                                                                                  1
                                                                                                       0   1   2   3       4   5   6   7
                                                                                                                       x



                                                                                    Corrected by using a simple LC Filter
Transformer: 12V to 208V AC                                                       Transformer
                                                                             •3 Phase
                                               208V AC 3-phase
                                               Synchronous Freq.
                                                                             •Delta to Delta Configuration
                          12V AC 3-phase
                          Synchronous Freq.

                12V DC
                                              12:208                         •Input: 12 Volts AC
                                                                             •Output: 208 Volts AC
        DC               DC                Trans-
          DC               AC              former

    23-43V DC
                                                :




    BLOCK DIAGRAM
                                                                                Synchronization
                                               208V AC 3-phase
                                               Synchronous Freq.
                                                                   • To correctly provide supplemental power to
                          12V AC 3-phase
                          Synchronous Freq.                          AMPS, our AC signal must be in phase with
                12V DC
                                              12:208                 the system
        DC               DC                Trans-
          DC               AC              former
                                                                   • Why?
    23-43V DC
                                                :                    – 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
                             Synchronous Signals
                                                                       to stabilize.
                             Voltage/Current Readings
            Synchronization                                                                   Microprocessor

• Phase-Lock Loop                            TI 2400 Series DSP
       • Fast Response                                –     16-bit data Fixed-Point
       • Will accurately correct any error            –     20-40 MIPS
   – Zero-Point Crossings                             –     On-Chip Flash Memory
       • Sample Rate
                                                      –     Other Features: A/D
       • Frequency
                                                            Converter, CAN Module,
       • 3-Phase Timings
                                                            SCI, SPI,




         Device Protection                                                                        Schedule
                                                                  Initial Design for Prototypes
•Protect from what?                                   Project Briefings (w eekly - Semester 1)


   –Incorrect power flow                                                      Design Review

                                                 Simulation: Interfacing Components to AMPS

   –Exceeding component rating                  Ordering Voltage Inverter and Buck Converter

                                                             Demonstrate Working Simulation

                                               Project Report and Notebook Due (Semester 1)


•How to protect it?                                                            Summer Break

                                                      Project Briefings (w eekly - Semester 2)

   –Switches (Control)                               Interface Fuel Cell Components to AMPS

                                                              Revise Voltage Control System

   –Fuses                                                         Finalize Protection Circuitry

                                                         Complete/Debug Interfacing to AMPS

                                             Final Product Demonstration/Release/Final Report
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                             Budget
      Item                           Price                   Questions?
      DC/DC Converter                     $800
      DC/3-Phase AC Converter           $2,000
      Transformer                         $125
      Hydrogen                             $45
      Design Poster/Report Binding*        $15
      Project Display Costs*               $35
      Protection Circuitry                $100
      Filtering                            $50
      Miscellaneous                       $300
                               Total    $3,470


*Cost divided evenly between Fuel Cell and Flywheel Groups

								
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