Note for Electrical Machines and Power Devices - EMPD By Deepak Kumar Sahoo

Introduction To Electrical Machines

DC GENERATORS,No Load Characteristics for Separately Excited DC Generator and DC Shunt Generator, Conditions for Self Excitation; Critical Resistance

OCC at different Speeds,Characteristics And Voltage Regulation

Applicaton Of DC Generator

Commutation

Speed Armature Current, Torque Armature Current and Speed Torque Characteristic for (i) Separately Excited DC Motor, (ii) DC Shunt Motor, (iii) DC Series Motor, and (iv) DC Compound Motor, Speed control and Starting of DC shunt and DC series motors, Brushless motors; Motor drive circuits

Motor Starters,Speed Control

Testing Of DC Machines

Principal,Working,Types Of Transformers,Practical Transformers,Phasor Diagrams,Voltage Regulation

Transformer Tests,Losses In Transformers,Efficiency Of a Transformers

Introduction,Bank Of Three Single Phase Transformers,Operation,Power Factor

Scott Connection,Application Of Scott Connection

Parallel Operation Of Three Phase Transformer

Three Phase Synchronous Machines,Constructional Features; Principle of operation as Alternator and Synchronous Motor; Synchronous Impedance

Voltage Regulation Of Alternator

Salient Pole Type Three Phase Synchronous Generator

Parallel Operation Of Three Phase AC Synchronous Generator

Frequency-Real Power Characteristics Of Three Phase Synchronous Generator

Synchronous Motor

Constructional Features of Squirrel Cage Rotor type and Slip Ring/Wound Rotor type of Induction Motors, Principle of Operation; Concept of Slip, Slip Torque Characteristics; Starting of Squirrel Cage Rotor type and Slip Ring/Wound Rotor type of Induction Motors

Speed Control of Induction Motors

Single phase And Special Purpose Motors,Double Field Revolving Theory

AC Series And Universal Motor