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Powering My House From My Car (not vice-versa)

Powering My House From My Car (not vice-versa). Internet Cowboy Un-Conference Jackson, WY 7/16/11 by Gary Lauder. Problem Statement. Put in solar PV in 2001 due to rolling blackouts When Enron was gaming the system Done for backup power, so included batteries

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Powering My House From My Car (not vice-versa)

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  1. Powering My House From My Car(not vice-versa) Internet Cowboy Un-Conference Jackson, WY 7/16/11 by Gary Lauder

  2. Problem Statement • Put in solar PV in 2001 due to rolling blackouts • When Enron was gaming the system • Done for backup power, so included batteries • Much much more complicated than standard • Past decade's grid reliability has been excellent • Power drain to maintain charge state significant • Time to replace batteries, so decided to: • Use fewer batteries so would not last the night • Add generator to sustain power when w/o sun

  3. Generator issues • Natural gas supply likely cut in big earthquake • Diesel tanks can leak, need refilling, smelly • Where to locate? (noise, refueling, space) • Was pondering problems... • Unrelated activity: gave short TED talk in 2010

  4. Similar idea • I was contacted by someone (Richard Factor) who had similar idea:

  5. PriUPS • His web site was www.PriUPS.com • = Prius/UPS • Prius batteries: 200-230V • Feed into voltage converters to 48V • 48V feeds into existing solar inverters

  6. Some Soldering Involved

  7. Voltage Conversion Box

  8. Orange Cables Connect to Cars

  9. 4 Inverters convert 48V to 120/240V

  10. Installed Connector to Car's HV Battery

  11. Thermal IR Image of Conversion Box Wires

  12. Stats • Tested at 3KW/car (more than I need) • I think I can double that output/car • Uses 1.7 Gal./hour = to driving at 31.5 MPH, so tank lasts 7+ hours if operated full bore • If gas costs $4.00/Gallon • Using PriUPS costs $1.59/hour • Cost of electricity is $0.55/KWH • With less power consumption, rate of gas usage declines • Many thousands of $'s less than traditional gen.

  13. Thank You! Gary Lauder Gary@LauderPartners.com

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