Lecture Notes || SNS Courseware

Lecture Notes

UNIT 1:

Basic Elements

Types of Electric Drive

Factors influencing the choice of electrical drives

Heating and cooling curves

Loading condition and class of duty

selection of power rating for drive

Classes of duty

UNIT 2:

Speed torque characteristics of various type of load &drive motor

Braking of electrical motors

DC motors

3 phase induction motor

single phase induction motor

FOUR QUADRANT OPERATION

UNIT 3:

3 POINT & 4 POINTSTARTER

3 PHASE INDUCTION MOTOR STARTERS

CONTROL CIRCUIT FOR DC SERIES MOTOR

NEED FOR STARTERS

STARTERS

CONTROL CIRCUIT FOR DC SHUNT MOTOR

CONTROL CIRCUIT FOR DC SERIES MOTOR

STARTERS FOR INDUCTION MOTOR

UNIT 4:

CONVENTIONAL SPEED CONTROL METHOD OF DC SHUNT MOTOR

APPLICATION

CONVENTIONAL SPEED CONTROL METHOD OF DC SERIES MOTOR

DC DRIVES-INTRODUCTION

SOLID STATE SPEED CONTROL OF DC DRIVES USING CONTROLLED RECTIFIERS

SOLID STATE SPEED CONTROL OF DC DRIVES USING CHOPPERS

CLOSED LOOP DC MOTOR SPEED CONTROL SCHEME

UNIT 5:

Introduction to feedback concepts