Advisory panel hearn_final

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Advisory panel hearn_final

  1. 1. Extended Range Fuel Cell Utility Vehicle: Design, Build, and Demonstration<br />Clay Hearn<br />April 27, 2011<br />
  2. 2. Introduction<br />Program Goals<br />Team Members<br />Model Based Design<br />Vehicle Build<br />
  3. 3. Program Goals<br />Program sponsored through Defense Logistics Agency (DLA) and Crane to provide extended range hydrogen fuel cell vehicles for use at Warner Robbins AFB in Georgia<br />Hydrogen refueling infrastructure on base<br />Currently using hydrogen fuel cell fork lifts<br />Numerous all-electric utility vehicles and NEVs <br />Maximize on-board hydrogen storage without sacrificing vehicle performance<br />Build and deliver units in 8 months to Warner Robbins AFB for 12 month evaluation<br />
  4. 4. Project Team Members<br />Center for Transportation and the Environment<br />Project management<br />Vehicle Modeling (PSAT)<br />Vehicle Design<br />Final Integration<br />Vehicle Support and Analysis<br />Fuel cell system and integration support<br />Gas Technology Institute<br />Hydrogen storage development<br />Base vehicle supplier and support<br />
  5. 5. Energy Storage Options<br />
  6. 6. Vehicle Configurations<br />Li-Ion batteries double range of vehicle over stock lead-acid batteries<br />Range of hydrogen vehicle driven by onboard stored hydrogen<br />~ 10X higher specific energy storage with 350 bar hydrogen fuel cell over advanced Li-ion batteries<br />Analysis to right assumes 2 kg on-board hydrogen storage<br />Plug-in options increase range by 25% – 50% over fuel cell alone, but also increase vehicle mass up to 250 kg<br />Fuel cell dominant hybrids increase range 25% – 27% over fuel cell alone<br />
  7. 7. Hydrogen Storage Options<br />Gravimetric capacity<br />Affects overall vehicle mass <br />Limits additional cargo bed capacity<br />Reduces vehicle economy<br />Volumetric capacity<br />Limits storage volume<br />Poses integration issues<br />
  8. 8. Evaluating Hydrogen Storage<br />Increasing on-board H2<br />Increasing on-board H2<br />
  9. 9. Vehicle Integration<br />8-month build schedule to retrofit two vehicles<br />Supervisory control and data recording<br />NI CompactRIO<br />Labview software<br />CAN communication between fuel cell and boost converter<br />“Rolling Benchtop” testing<br />
  10. 10. Final Integration and Testing<br />Completed October 2010<br />Vehicle Range Testing<br />309 mile range demonstrated<br />87.8 mi/kg average<br />5 days to complete!<br />Vehicles include 120V 1.5 kW inverter for on-site power<br />12 month demonstration at DDWG began November 2010<br />
  11. 11. Questions?<br />

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