This blog documents the restoration, and conversion, of a 1965 Humber (Singer) Vogue to a fully electric vehicle. The Vogue will be powered by an 11kW(modified), 3 phase industrial AC motor, controlled by an industry standard Variable Speed Drive (VSD) or Inverter. To be able to produce the 400 volts phase to phase the VSD will need about 600 VDC of batteries. A big thanks to the contributors on the AEVA forum:

Wednesday, November 17, 2010

How fast will it go?

The next question I get asked a lot is how fast will it go.
With my 3.89:1 differential, 185/65R13 tyres (that's tires to you USA guys) the motor will be doing about 4339 RPM at 120km/h. The motor is rated at 1465 RPM at 75% load and 50Hz. Since the controller will go up to 150Hz at it's most efficient switching rate (gets a bit complex here because it can actually go higher), then it follows that the motor can do 4395 RPM.
So it can go about 125 km/h.

How fast can it accelerate.
Another complex question. The peak power of the motor (around 70kW) is higher than the peak power my 45kW (peak) controller can deliver so initially the car will be controller limited. I have the parts to re-work my "other" controller to about 80kW so pretty much as soon as the car is safely debugged I will change over to the upgraded controller. They are physically identical - mounting, connections, everything.
The first graph is as it will go on the road, the second is with the upgraded controller.
To give these some perspective, the original Vogue did 0-100km/h in 17, 21 or 25 seconds - depending on where you get your information.

Thanks to "woody" from the AEVA forums for the extremely complex spreadsheet that takes everything - batteries, motor, controller, car Cd, weight, rolling resistance etc. - into consideration. Predictions from this spreadsheet have been verified on a real EV.

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