Posts Tagged ‘PHEV’


Electric Motor Comparison

October 3, 2007

I want to take what I did with battery specs, and do a quick review of the various electric motors being planned for HEV/PHEV/EV use. I’ve sampled the top spec motors from five manufacturers: UQM, AC Propulsion, Raser Technologies, PMLFlightlink, and Tesla Motors. The two really defining criteria are power density and efficiency. Increased power density reduces the weight and form factor of the motor needed for the application, and high efficiency helps reduce overall energy losses.

(click to enlarge image)

Electric Motor Power Density

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