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How Electricity Works in Electric Cars

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Hayden Edwards

on 25 February 2013

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Transcript of How Electricity Works in Electric Cars

By Hayden Edwards How Electricity Works In Electric Cars Today I'm going to show you How Electricity Works in Electric Cars Introduction What do you need for Electric Cars A Long lasting battery EV power source
DC Brushless
AC Induction
and the
Permanent Magnet motor How to Start an Electric Cars With most electric cars
you have a key, but some
times you have to push a
button to start it. TYpes of Electric Motors DC motors
Synchronous motors
Induction motors
Stepper motors
Linear motors Dc Motor One of the first electromagnetic rotary motors, if not the first, was invented by Michael Faraday in 1821.A permanent magnet was placed in the middle of the pool. When a current was passed through the wire, the wire rotated around the magnet, showing that the current gave rise to a circular magnetic field around the wire. This motor is often demonstrated in school physics classes, but brine is sometimes used in place of the toxic mercury.The classic DC motor has an armature of electromagnets. A rotary switch called a commutator reverses the direction of the electric current twice every cycle, to flow through the armature so that the electromagnets push and pull on permanent magnets on the outside of the motor.
DC motor speed generally depends on a combination of the voltage and current flowing in the motor coils and the motor load or braking torque. synchronous Motor The classic single phase AC motor is a shaded-pole synchronous motor[?]. It strongly resembles a DC motor, but the outside magnets are made from electromagnets. One outside, stationary magnet (the "shaded pole") is intentionally weakened so that the motor has a preferred direction of starting. Induction Motor For high power applications the three phase AC motor is used. This motor uses the phase differences between the three phases of the electrical supply to create a rotating electromagnetic field in the motor.

AC motor speed primarily depends on the frequency of the AC supply and the amount of slip, or difference in rotation between the rotor and stator fields, determines the torque that the motor produces. The speed in this type of motor has traditionally been altered by having additional sets of coils or poles in the motor that can be switched on and of to change the speed of magnetic field rotation. Stepper Motor Another kind of electric motor is the stepper motor, where an internal rotor containing permanent magnets is controlled by a set of external magnets that are switched electronically. A stepper motor is a cross between a DC electric motor and a solenoid. Simple stepper motors "cog" to a limited number of positions, but proportionally controlled stepper motors can rotate extremely smoothly. Computer controlled stepper motors are one of the most versatile forms of positioning systems, particularly when part of a digital servo-controlled system. A linear motor is essentially an electric motor that has been "unrolled" so that instead of producing a torque (rotation), it produces a linear force along its length by setting up a travelling electromagnetic field. Linear motors are most commonly induction motors or stepper motors.

The construction of an electric motor is very similar to that of a dynamo. In fact, a machine can be built that acts as either a motor or a dynamo. Linear Motor Kids.Net.Au - Encyclopedia > Electric motor
HowStuffWorks "How Electric Cars Work"
The basics to how an Electric Car works - YouTube
http://www.world-nuclear.org/info/electricity_cars_inf120.html What is an electric car An electric car is a type of car that does not use petrel. What is an electric car An electric car is a type of car that does not use petrol. It's like any other car. Remember the only difference in the car is that it does not run off fuel. Thank you for letting me teach you about How Electricity works in Electric. I hope you learnt a lot. Bibliography
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