In the name of Allah the most In the name of Allah the most beneficent and the most beneficent and the most

mercifulmerciful

ELECTRIC CAR

BY MURTAZA BILAL

03F-EE-94

CONTENTS Introduction History Description Operation Performance

INTRODUCTION An electric car is a car powered

by an electric motor rather than a gasoline engine.

Electric cars create less pollution than gasoline-powered cars, so they are an environment friendly alternative to gasoline-powered vehicles (especially in cities).

HISTORY Thomas Davenport is credited with

building the first practical EV In 1834.

In 1847 Moses Farmer built a two-passenger electric car

In 1851 Charles Page invented a 20-mph electric car.

AN EV OF EARLY FIFTIES

BASIC DISCRIPTAON The gasoline engine is replaced by an

electric motor. The electric motor gets its power from a

controller. The controller gets its power from an

array of rechargeable batteries.

The Motor 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 If it is an AC motor, then it probably is

a three-phase AC motor running at 240 volts AC with a 300 volt battery pack.

The Batteries A battery tray is installed in the

floor of the car. Fifty 12-volt lead-acid batteries are

placed in the battery tray (two sets of 25 to create 300 volts DC).

The batteries weigh about 1,100 pounds (500 kg).

The batteries last three to four years

The Controller The controller takes power from the

batteries and delivers it to the motor. The accelerator pedal hooks to a pair of potentiometers and these Potentiometers provide the signal that tells the controller how much power it is supposed to deliver.

THE CONTROLLER

The electric motor The controller The batteries

The Charging System Any electric car that uses batteries needs a

charging system to recharge the batteries To pump electricity into the batteries as

quickly as the batteries will allow To monitor the batteries and avoid

damaging them during the charging process It takes about 12 kilowatt-hours of

electricity to charge the car after a 50-mile trip.

The 120/240-volt charging system

CAR CHARGER

PERFOMENCE The range of this car is about 50 miles (80

km). The 0-to-60 mph time is about 15 seconds. It is nearly silent When breaks are applied the motor acts

as generator and charges the batteries. No lubrication required. Easy maintenance.