THREE PHASE INDUCTION MOTOR

What's a 3 phase induction motor?

ADVANTAGES

• Can change direction of the shaft
• Smooth acceleration under heavy load
• No excessive heating during starting
• Adjustable speed control
• Self starting
• Little maintenance

DISADVANTAGE

• poor starting torque
• speed control of induction motors are difficult
• light load conditions they operate at very worst power factor (0.2 to 0.4 lagging)

There are two parts of a three phase motor
The Rotor
and
The stator

HOW DOES THREE PHASE INDUCTION MOTOR WORK?

• Magnetic power

WHAT IS SELF STARTING

• No external force

THERE ARE THREE MAIN PARTS OF THE STATOR

• Stator frame
• Stator core
• Stator winding or field winding.

Stator frame

Stator core

Stator winding or field winding.