im construction.ppt
DESCRIPTION
induction motor, it has very descriptive lessonTRANSCRIPT
INDUCTION MOTOR CONSTRUCTION
INDUCTION MOTOR CONSTRUCTION
An induction motor has two main parts
STATORROTOR
Electromagnetism is the principle.
CONSTRUCTION OF STATORSteel frame Hollow , cylindrical core laminations slots
MZS FKEE, UMP
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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.
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• 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
Squirrel cage rotor
Wound rotor
Notice the slip rings
MZS FKEE, UMP
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SQUIRRELCAGE ROTOR CONSTRUCTION
Squirrel-Cage Rotor
/rotor winding/rotor winding
Short circuits allShort circuits allrotor bars.rotor bars.
WOUND-ROTOR CONSTRUCTION