Quote:
Originally Posted by Irace86.2.0
What I find unfamiliar about EV's versus internal combustion engines are how the mileage and performance are proportional on EV's because they are both tied into the battery size. This is not the case with internal combustion engines which often have worse gas mileage, as the power figures go up. Often cheap cars can have good gas mileage. With EVs, now the expensive cars will have the power and the range convenience. It is interesting.
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That's true for the battery, and also is partly due to them using AC induction motors. With a permanent magnet motor there would be higher peak efficiency but also higher losses at low power for a more powerful motor. Induction motors reach peak efficiency at a very low % of max torque and lose efficiency as you increase torque after that, so more available power actually makes acceleration more efficient (that's why the P100D has more range).