Electrical Machines
Handout
Lectures
Tutorials
LABS
EM Introduction
Electro-mechanical energy & magnetic fields
Magnetic circuits analysis and important terms of magnetism
Magnetic-electric circuit analogy
Series & Parallel magnetic circuits
Leakage flux & fringing effect
Magnetic B-H curve & Hysteresis
Hysteresis loss & its importance
Faraday's laws of electromagnetic induction
Lenz's law & Right hand thumb rule
Statically & dynamically induced EMF
Self & mutual inductance
Inductances in series and parallel
AC excitation in magnetic circuits
Eddy current loss
Electro-mechanical energy conversion devices
Torque development by alignment of two fields
Production of torque
Induced EMF in rotating coils
DC Machines - Overview
DC Machines - Working Principle & EMF Equation
DC Machines - Constructional Features
Function of Commutator
Armature Windings & Types
Lap & Wave Windings
Types of DC Machines
DC Generator Characteristics
Armature Reaction & Compensating Windings
Losses & Efficiency in DC Machines
DC Motors - Speed, Torque, & Power
DC Motor Characteristics
Speed Control of DC Motors
Single Phase Transformers - Construction Details
Single Phase Transformers - Core, Windings, & Cooling Construction
Ideal Transformer & EMF Equation
Transformer Losses & Equivalent Circuit Representation
Transformer Voltage Drop & Equivalent Circuit
Transformer Open Circuit - Short Circuit Tests & Voltage Regulation
Transformer Efficiency & Auto-transformer
Per-unit System & Parallel Operation of Transformers
Three-Phase Transformer - Construction, Advantage, & Limitations
Three-Phase Transformer - Winding Connection & Groups
Three-Phase Transformers - Selection of Winding Connections
Three-Phase Transformers - Scott Connection
Three-Phase Induction Motors - Construction & Principle
Three-Phase Induction Motors - Rotating Magnetic Field
Three-Phase Induction Motors -Rotor Quantities
Three-Phase Induction Motors - Starting, Running, & Max. Torque
Three-Phase Induction Motors - Torque - Slip Characteristics
Three-Phase Induction Motors - Load Torque Characteristics
Three-Phase Induction Motors - Torque - Speed Characteristics
Three-Phase Induction Motors - Power Stages
Three-Phase Induction Motors - Equivalent Circuit
Three-Phase Induction Motors - Condition for Max. Power Output
Three-Phase Induction Motors - Starting Methods & Testing
Alternators - Fundamentals
Alternators - Constructional Features
Alternators - Excitation Systems
Alternators - Principle of Operation
Alternators - Hunting & Damper Winding
Alternators - Armature Windings
Alternators - Equation of Induced EMF
Alternators - Voltage Drop, Armature Reaction, & Synchronous Impedance
Alternators - Determination methods of Voltage Regulation
Alternators - Salient Pole Operation & Two-Reaction Theory
Synchronous Motors - Characteristics & Principle of Operation
Synchronous Motors - Methods of Starting
Synchronous Motors - Loads with Constant & Different Excitation
Synchronous Motors - Increased Load with Constant Excitation
Synchronous Motors - Changing Excitations on Constant Load
Synchronous Motors - Power & Torque
Synchronous Motors - Effect of Excitation on Armature Current & Power Factor
Synchronous Motors - Synchronous Condenser
Synchronous Motors - Applications
Synchronous Motors - Merits - Demerits & Comparison with Induction Motors
Single-Phase Induction Motors -Introduction & Construction
Single-Phase Induction Motors -Principle of Operation
Single-Phase Induction Motors -Method of Torque Produced
Single-Phase Induction Motors -Types and Classifications
Single-Phase Induction Motors - Equivalent Circuit