5 ms·
Wouldn't there also be loss due to "rate of change of acceleration" or "Jerk" of which mass may have an effect? The same reason city driving is less efficient?
by sigmaprimus 10y ago
Wouldn't there also be loss due to "rate of change of acceleration" or "Jerk" of which mass may have an effect?
The same reason city driving is less efficient?
- hwillis 10y agoNot really. Acceleration is related to torque so jerk is the rate of change of current in the motor. Current in an electric motor goes from 0-100% ~10k times per second (PWM), so the motor doesn't notice much difference.
- MertsA 10y ago>Current in an electric motor goes from 0-100% ~10k times per second (PWM) That's just the voltage across the terminals. The reason why this works is precisely because current doesn't go from 0-100% with the voltage. PWM is relying on the inductance of the motor to keep the current the same as it would be if the average voltage was applied across the terminals.