# How do I choose an electric car motor?

Contents

## What size electric motor do I need for my car?

There is a direct conversion between horsepower and watts: 745.7 watts is 1 horsepower. Car motors for modern vehicles range from about 50 horsepower to 500 horsepower or more. An average medium size family car might have a 150 HP motor. To duplicate that with an electric motor you would need 111,855 watts of power.

## How do you determine the engine rating of an electric car?

Mtractive = Ptotal / η= 2.526/0.85=2.97= 3 kW (approximately). For the illustration of selection of power rating for an electric car of 450 kg, a motor with output power rating of 3 kW has to be selected. In this way, power rating required to drive an electric vehicle of particular load is calculated.

## How do you size a motor?

Divide the motor speed by the required speed and round down to get a starting gear ratio. Then divide the required torque by the gear ratio to find the newly required torque. This will help you narrow the choices down to a few select motors.

## How big is a 100 horsepower electric motor?

General Purpose Motor, 100 HP, 3-Phase, Nameplate RPM 1,775, Voltage 230/460V AC, 404/5T Frame. Country of Origin Varies. Country of Origin is subject to change. NEMA 400 frame three-phase general purpose AC motors have a standard 2-7/8″ diameter, 7-1/4″ length shaft whose center is 10″ above the mounting surface.

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## Do electric cars use DC or AC motors?

Electric-car Motors and Batteries. Electric cars can use AC or DC motors: If the motor is a DC motor, then it may run on anything from 96 to 192 volts. Many of the DC motors used in electric cars come from the electric forklift industry.

## What type of motors do Teslas use?

There are two main kinds of electric motors used in electric cars, though there are many variations on those themes. Tesla, for example, uses alternating current (AC) induction motors in the Model S but uses permanent-magnet direct current (DC) motors in its Model 3.

## Which type of motors is generally preferred in electric vehicles now?

Electric vehicles use DC collector motors or AC induction motors. A survey published in 2018 conducted over more than 200 vehicles, stated that permanent magnet synchronous motors are majorly used in the EVs. Induction motors are preferable for heavy vehicles such as trucks and sports cars.