Electrical Engineering/motor for electric car


Sir 300kg load capacity  Charging car require how many minimum volts and  ampere of  motor to run a car at the speed of 40km/h

Who knows! There are so many variables in looking at these kinds of hypothetical questions.

You could calculate the electrical power required to maintain that speed on a flat surface with no prevailing winds but it would not provide any extra power for going up hill or bucking the wind or for quick acceleration to get out of the way of other vehicles.

One way of looking at it is just to remember that 1HP (Horse Power) is equal to 746 watts.  Therefore, a 100 HP gasoline engine would require an electric engine capable of producing 75KW.

And, in order to calculate your hypothetical electric car you would want to know how much time is required to reach the 40km/h.  Acceleration period likely would take up more instantaneous power than that of just maintaining the speed once reached.

Good question; but keep dreaming!


Electrical Engineering

All Answers

Answers by Expert:

Ask Experts




All technical areas of Electronics Engineering.


BSEE, MBA, Design, R&D, University Research.
Senior Life Member of IEEE. Life Fellow of AES.

IEEE, Consumer Electronics Society, Audio Engineering Society.
Broad teaching experience; work experience mostly in consumer electronics and conversion from analog to digital technologies. Pioneer in digital audio at all levels.

BSEE (Equiv) BYU BSEE University of North Dakota MSBA (MBA) Illinois State University Graduate Studies in Computer Science - Bradley University Graduate Studies - Ohio University Graduate Studies - University of Missouri Kansas City DeVry Tech - Electronics

©2016 About.com. All rights reserved.