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3 PHASE INDUCTION MOTOR

TOPIC :

Present By : Amit kumar

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Contents :

Introduction

Important part of 3 phase induction motor

Working Principle of 3 phase induction motor

Equivalent circuit of 3 phase induction motor

Star Delta connection in 3 phase induction motor

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Introduction :

The winding wound on the stator of three phase induction motor is also called field winding and when this winding is excited by three phase ac supply it produces a rotating magnetic.

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STATOR

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How to create the Pole in three phase induction motor?

2 Pole 4 Pole

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What is the effect of pole in three phase induction motor?

NS = 120f /P

Synchronous speed is inversely proportional to pole .

S= NS-Nr /Ns

Where,

S= slip of motor

F= frequency of motor P= pole of motor

Ns= Synchronous speed of motor Nr= Synchronous speed of rotor

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ROTOR

Rotor : Rotor is the rotating part of 3 phase

induction motor

.R o tor is a rotating part of induction motor .The  rotor is     connected to the mechanical load through the shaft .

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Working Principle of 3 phase induction motor

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Why 3 phase induction motor are self started?

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Equivalent Circuit of 3 phase induction motor

ROTOR

I

2

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Why we need Star and Delta setup?

5A

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 How to start motor without Star and Delta connection?

STAR CONNECTION DELTA CONNECTION

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Star and Delta connection

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Referencias

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