im construction.ppt

11
INDUCTION MOTOR CONSTRUCTION

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induction motor, it has very descriptive lesson

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Page 1: IM CONSTRUCTION.ppt

INDUCTION MOTOR CONSTRUCTION

Page 2: IM CONSTRUCTION.ppt

INDUCTION MOTOR CONSTRUCTION

An induction motor has two main parts

STATORROTOR

Electromagnetism is the principle.

Page 3: IM CONSTRUCTION.ppt

CONSTRUCTION OF STATORSteel frame Hollow , cylindrical core laminations slots

Page 4: IM CONSTRUCTION.ppt

MZS FKEE, UMP

4

CONSTRUCTION OF STATOREach Each grouping of coilsgrouping of coils, together with the steel core it surrounds, form an electromagnet.

The stator windings are connected directly to the power source.

Page 5: IM CONSTRUCTION.ppt

5

• Types

Squirrel cage type:Squirrel cage type:Copper bars embedded in the rotor slots Shorted at both end by end ringsSimple, low cost, robust, low maintenance

Wound rotor type:Wound rotor type:Winding is wound by wires. Slip rings and brushes .Easy to control speed, more expensive.

most common is the “squirrel cage”

ROTOR CONSTRUCTION

Page 6: IM CONSTRUCTION.ppt

Squirrel cage rotor

Wound rotor

Notice the slip rings

Page 7: IM CONSTRUCTION.ppt

MZS FKEE, UMP

7

SQUIRRELCAGE ROTOR CONSTRUCTION

Squirrel-Cage Rotor

/rotor winding/rotor winding

Short circuits allShort circuits allrotor bars.rotor bars.

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WOUND-ROTOR CONSTRUCTION

Page 11: IM CONSTRUCTION.ppt