Electric Vehicle Motor Power Calculation

The main reason is that li ion batteries have higher.

Electric vehicle motor power calculation.

1 ft lb f 1 356 nm. An important component that is an integral part of all electric vehicles is the motor. So its power output is derived from its maximum energy transformation capacity. 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.

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. N revolution per minute rpm alternatively. Torque in imperial units can be calculated as. 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.

There is no petrol to provide power. P hp horsepower delivered by the electric motor hp. Electrical motor power velocity and torque equations. T ftlb torque lb f ft.

P engine power w f t total forces acting on the car rolling resistance force gradient resistance force and aerodynamic drag resistance n. Brushed motor have around 75 80 efficiency and brushless motors have around 85 90 efficiency. The role of a motor is to create mechanical energy out of another form of energy. However this peak power is only required during fast acceleration and not during coasting.

It is estimated that 25 of the total cars across the world will run on electricity by 2025. Required power from an engine to keep a car at constant speed can be calculated as. V velocity of the car m s. So the battery s storage capacity and the.

The calculator was designed for dc motor systems so if you re planning an ac conversion it won t be helpful. 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. Speed is the top speed of the calculation. So using the above formulas 144 volt system should be limited to about 700 amps and the 288 volt system to 350 amps.

P f t v η 1. 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. 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. All of the power must come from the batteries and electric motor s.

T ftlb p hp 5252 n 1b. T inlb torque in lb f. Motor efficiency is the efficiency of the motor. T inlb p hp 63025 n 1.