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电动机运转原理Motor operation pri

nciple

Team members:姜垒，朱骏，谭雄军，钟晓勇，周佐吉，尹雷兵，刘祖凤

classification直流电动机DC motor直流电动机DC motor

三相异步电动机Three-phase asynchronous motor

三相异步电动机Three-phase asynchronous motor

分类classification

单相交流电动机Single-phase AC motor单相交流电动机

Single-phase AC motor

其他类型Other motor其他类型

Other motor

In daily life is equipped with the device of the motor.

Constitute

The stator:magnet The rotor:coil

Why the motor will rotate?

Magnet coil is energized to make movement.

Commutator motor to rotate continuously.

Constitute

magnetic pole: N and S

excitation windingexcitation winding

the armature winding

commutator

rotating core:armature

DC motor

Step 1

Step 2

Step 3

Electric current produced by the coil in ampere force on the rotor

The rotor at the end of the brush with alternate contact transformation

Coil on the current direction of change

The principle of DC motor rotation

Step 4 Step 4

Lorentz force direction invariable, the motor can keep a direction

Working principle

Constitute

The stator winding

The stator winding

Squirrel cage rotor

Squirrel cage rotor

Pole shoePole shoe

Short circuit ring

Short circuit ring

single-phase AC motor single-phase AC motor

Step 3

Step 2

Step 2

Step 1

Balance broken, electromagnetic torque is not zero, the rotor spin

The rotation of the rotor and clockwise direction magnetic field cutting lines of magnetic force between the smaller; The rotation of the rotor and counterclockwise direction magnetic field cutting lines of magnetic force between the movement

Motor with external forces to a certain direction

Produce an alternating magnetic field

The operation principle of single-phase AC motor (asynchronous)

Working principle

The working principle of three-phase motor （ asynchronous ）

Level1

Level2

Level3

Level 4

Level 5

To produce a rotating magnetic field

The rotating magnetic field cutting rotorconductors, induced potential

In the rotor winding induced current

The rotor current produce force, forms the electromagnetic torque

Motor rotation

The working principle of three-phase motor （ asynchronous ）

Working principle

Stepper motor principle of work

Working principle

When current flows through the

stator winding, stator winding to

produce a vector field

The rotor rotating an Angle, make the rotor magnetic field direction in line

with the stator magnetic field direction.

For every input electrical impulses, a rotary Angle of motor before further.

The working principle of servo motor

Working principle

To receive a pulse

Rotating one pulse corresponds to the point of view

Realize the displacement

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