This calculator provides an estimate of what size electric motor is necessary to propel a vehicle on flat ground or up an incline at a certain speed.
Electric vehicle motor power calculation.
P hp horsepower delivered by the electric motor hp.
T ftlb p hp 5252 n 1b.
However this peak power is only required during fast acceleration and not during coasting.
So the battery s storage capacity and the.
The common in the field estimate of kw power a 9 motor can handle for short periods is 100 kw.
So using the above formulas 144 volt system should be limited to about 700 amps and the 288 volt system to 350 amps.
Down the right side of the page you ll find your car s make and model from the drop down box then your electric motor type in the second drop down box your batteries in the next and so forth.
It is estimated that 25 of the total cars across the world will run on electricity by 2025.
In the case of an electric car its power output depends on the size of its motor its volume and the wattage of the incoming current.
Brushed motor have around 75 80 efficiency and brushless motors have around 85 90 efficiency.
V velocity of the car m s.
P engine power w f t total forces acting on the car rolling resistance force gradient resistance force and aerodynamic drag resistance n.
Ev calculations how to calculate power how to calculate rpm electric vehicle power electric vehicle rpm the given link is for coefficient of drag for di.
An important component that is an integral part of all electric vehicles is the motor.
All of the power must come from the batteries and electric motor s.
T inlb p hp 63025 n 1.
Required power from an engine to keep a car at constant speed can be calculated as.
There is no petrol to provide power.
There are several types of batteries chemistry used in hybrid and electric vehicle propulsion systems but we are going to consider only lithium ion cells.
T ftlb torque lb f ft.
The calculator was designed for dc motor systems so if you re planning an ac conversion it won t be helpful.
The main reason is that li ion batteries have higher.
N revolution per minute rpm alternatively.
Speed is the top speed of the calculation.
Individual battery cells are grouped together into a single mechanical and electrical unit called a battery module the modules are electrically connected to form a battery pack.
Only one problem that much electrical power put into the motor could easily destroy it rather quickly.
T inlb torque in lb f.
1 ft lb f 1 356 nm.
P f t v η 1.
So its power output is derived from its maximum energy transformation capacity.
Motor torque calculations for electric vehicle saurabh chauhan abstract.
The role of a motor is to create mechanical energy out of another form of energy.
