POLAR.SRI.COM - Power Systemspolar.sri.com/polarpower.org/PTC/2008_pdf/2008PTC_Stehle.pdf ·...
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Polar Technology Conference – 24-25 April 2008 SRI International 2008 Polar Technology Conference Page 1 Power Systems Power Systems Roy Stehle SRI International Center for GeoSpace Studies Menlo Park, CA 94025 [email protected] 650-859-2552 Polar Technology Conference Menlo Park, California 26 & 27 April 2007
Transcript of POLAR.SRI.COM - Power Systemspolar.sri.com/polarpower.org/PTC/2008_pdf/2008PTC_Stehle.pdf ·...
Polar Technology Conference – 24-25 April 2008
SRI International 2008 Polar Technology Conference
Page 1
Power SystemsPower Systems
Roy StehleSRI International
Center for GeoSpace StudiesMenlo Park, CA 94025
[email protected] 650-859-2552
Polar Technology ConferenceMenlo Park, California
26 & 27 April 2007
Polar Technology Conference – 24-25 April 2008
SRI International 2008 Polar Technology Conference
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UltraCell XX25 Fuel CellUltraCell XX25 Fuel Cell25 Watts Output @ 12 – 30 V (factory set)2.7 lbs + 0.8 lb fuel cartridge180 Wh per fuel cartridge-20 to +40° C operating temperature range5.9 x 9.1 x 1.7 inches2.7 lbsMIL-STD-810FEnvironmentallyfriendly
Polar Technology Conference – 24-25 April 2008
SRI International 2008 Polar Technology Conference
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Fuel Cell SystemFuel Cell System
Methanol Fuel has highpower densityRechargeable fuel cartridgesmuch lighter than Li-Ionbatteries for same capacity
72 Hour Mission8.8 lbs vs. 27.1 lbs
Polar Technology Conference – 24-25 April 2008
SRI International 2008 Polar Technology Conference
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Field Power SystemsField Power Systems
UltraCell XX25 Methanol Fuel Cell25 W @ 12 V DCNeeds storage battery0.37 gal/kWh2.7 lbs + fuel118 cu in + fuel1 kWh => 5.7 lbsFan noise$5,000 + $100 for 1 gallon fuel
UniPac 34 Solar Panel & battery12 V DC * 2 A20 Ah battery20.7 lbs526 cu in1 kWh => 20.7 lbsif clouds < 7 daysSilent$800
Honda EU1000iGenerator12 VDC to 8 A1000 W @ 115 VAC0.16 gal/kWh full load0.3 gal/kWh ¼load29 lbs + fuel2565 cu in + fuel1 kWh => 32 lbs53–59 dB(A) @ 7 m$780
Polar Technology Conference – 24-25 April 2008
SRI International 2008 Polar Technology Conference
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Low Power SystemsLow Power Systems
Reduce power consumption rather than supply more powerGSE P3 48-W panel didn’t meet specs
Polar Technology Conference – 24-25 April 2008
SRI International 2008 Polar Technology Conference
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Imnavait Creek, AlaskaImnavait Creek, Alaska40 Watt continuous load650 Watt solar array1000 Watt wind turbine32 6-V 220-Ah batteriesIridium data link
Polar Technology Conference – 24-25 April 2008
SRI International 2008 Polar Technology Conference
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Summit Station, GreenlandSummit Station, GreenlandProven WT6000 (6 kW) turbineSupplements diesel gensets10,000 ft ice foundationPlywood ice anchorsNo derrick for erection-60° C temperatureHoar frost destroysblade aerodynamics
Polar Technology Conference – 24-25 April 2008
SRI International 2008 Polar Technology Conference
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Ivotuk, Alaska, Power PlatformIvotuk, Alaska, Power Platform
250 Watt continuous loadTwo 6.5-kW diesel gensets440-W solar array600-W wind turbineAGM battery bank in external enclosureStarBand satellite link
Polar Technology Conference – 24-25 April 2008
SRI International 2008 Polar Technology Conference
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Hoar frost affects instrumentationLimited power for deicingRemote sensing of icing
Icing at IvotukIcing at Ivotuk
Polar Technology Conference – 24-25 April 2008
SRI International 2008 Polar Technology Conference
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Deicing TestingDeicing Testing
Icing Detectors– Goodrich - vibration– New Avionics – laser refraction
Polar Technology Conference – 24-25 April 2008
SRI International 2008 Polar Technology Conference
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2008 Clean Snowmobile Challenge2008 Clean Snowmobile Challenge15 University teamsMcGill University winner of Zero Emissions category(4 entries)Li-Ion technology, lightweight (499 lbs)Two sleds to be “test driven” at Summit Station, Greenland
McGill Univ.Kick off Michigan Tech
Polar Technology Conference – 24-25 April 2008
SRI International 2008 Polar Technology Conference
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Morningstar Morningstar SureSineSureSine InverterInverterPure sine wave inverter300-Watt continuous output600-Watt peak rating115- or 220-VAC, 50 or 60 Hz90% efficiency at 50- 150 W-40 to +45° C
Polar Technology Conference – 24-25 April 2008
SRI International 2008 Polar Technology Conference
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PolarPower.Org Home PagePolarPower.Org Home Page
IntroductionPower TechnologiesDeployment ExamplesLinksEventsSupporting TechnologiesWikiSearch Function
Soliciting inputWebsite updatesOutreach
Polar Technology Conference – 24-25 April 2008
SRI International 2008 Polar Technology Conference
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Working Examples Working Examples -- BatteryBatteryEffects of Cold Temperatures on Battery Capacity -UNAVCO
Recovery After Cold Exposure
Charge/Discharge Capacity at Cold Temperatures
