Electric Vehicles Ian Hooper December 2008. Introductions  Ian Hooper, from Maida Vale WA  Degree in Mechatronic Engineering  Currently run a business.

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Presentation transcript:

Electric Vehicles Ian Hooper December 2008

Introductions  Ian Hooper, from Maida Vale WA  Degree in Mechatronic Engineering  Currently run a business promoting electric vehicles in Australia  Recently converted Mazda MX5 to battery electric

Free Lunch Will Soon Be Over  Petrol contains an amazing amount of energy, but is non-renewable resource  Other forms of combustible fuel need to be produced  Hydrogen production by electrolysis of water <50% efficient  Biofuel requires large amounts of farmland  Biofuel to fill a Hummer’s fueltank requires same farming resources as food for a family for a year!  Combustion engines are only 30% efficient

Sustainable Transport  40% of all greenhouse gas emissions are from transport  We need transport solutions which use renewable energy and do not generate CO2!  Electric vehicles can be recharged from electricity generated by renewable sources  e.g Green Power, roof-top solar  Electric vehicles are highly efficient  Up to 90% total system efficiency

Commonly Held Misconception  “If electric cars are recharged from a mains grid primarily powered by fossil fuels, they are just as bad for the environment as petrol cars?”  The simple answer: Why haven’t you signed up for Green Power yet?  Also, power stations and EVs are much more efficient than petrol engines

CO2 Emissions Comparison Toyota Prius Hybrid 104 g/km Holden Commodore V6 Petrol 255 g/km Tesla Roadster Battery Electric ~50 g/km* * Based on electricity generated entirely from fossil fuels

Running Cost Comparison  Typical petrol vehicle: 10L/100km  1L fuel costs say $1  10 cents per km  Electric vehicle uses 0.2kWh/km  $0.20/unit (kWh)  ~4 cents per km  Offpeak = ~1c/km!

Converting a Car to Electric  It’s a big job!  First-timers usually take about 100 hours  not including research and design time..  So why bother?  Unfortunately there are no mass produced electric vehicles for sale in Australia*, so we have to make our own. * as of December 2008

Motivation?  The environmental imperative  "We do not inherit the earth from our ancestors, we borrow it from our children." - Native American Proverb  "You must be the change you wish to see in the world. ” - Mahatma Gandhi

Conversion Process  Remove the petrol engine, fuel tank, radiator, etc..

Conversion Process  Replace with an electric motor

Conversion Process  Install some batteries up front..

Conversion Process  Some more in the back..

Conversion Process  And some extra electronics etc..

Conversion Process  And we’re done! (Sounds easy, right?)

The Future  Real change will be possible when mass- produced electric vehicles hit the market (2010?)  Huge scope for improving vehicle efficiency  e.g Lighter and more aerodynamic  The Aptera (right) uses six times less energy to get from A to B than my MX5!

The Future  I’m also a big advocate of personal transportation solutions, e.g  Electric bicycles  Electric scooters  Segway type scooters  Makes a lot more sense than bringing 1 tonne of metal with you everywhere!

Side Note: Energy Efficiency  Human riding a bicycle: 20 calories per kilometre  Average car: 1200 calories per km! (60x worse)  Problem: The passenger only represents 5% of total weight in car.

Get Involved  Australian Electric Vehicle Association   Zero Emission Vehicles Australia 