Electrical Machines

Electrical Machines. Instructor: Prof. G. Bhuvaneshwari, Department of Electrical Engineering, IIT Delhi. The course introduces electrical machines - namely transformers, DC and AC rotating machines, which are, arguably, the most important components of the energy and power conversion industry. Transformers, being static, are the easiest of electrical machines and hence they will be dealt with initially after introducing magnetic circuit fundamentals. DC and AC machines will be discussed after understanding the process of electromechanical energy conversion through a magnetic field. The efficiency, voltage regulation and characteristics of these machines will be discussed while they are functioning as generators. Further, their speed-torque characteristics, starting, braking, speed control and efficiency will be discussed while they function as motors. Every topic will include their applications in various power industries as well. (from


Lecture 01 - Introduction to Electrical Machines
Lecture 02 - Single-phase and Three-phase AC Circuits, Magnetic Circuits
Lecture 03 - Magnetic Circuits (cont.)
Lecture 04 - Magnetic Circuits (cont.)
Lecture 05 - Transformers: Introduction
Lecture 06 - Transformers: Amp-Turn Balance, Ideal and Practical Transformers
Lecture 07 - Transformer Equivalent Circuit and Reducing Leakage
Lecture 08 - Transformer Equivalent Circuit Parameter Determination
Lecture 09 - Transformers: Voltage Regulation and Efficiency
Lecture 10 - Auto-transformers
Lecture 11 - PU Notation and Introduction to Instrument Transformers
Lecture 12 - Instrument Transformers and All Day Efficiency
Lecture 13 - Three Phase Transformers I
Lecture 14 - Three Phase Transformers II
Lecture 15 - Electromechanical Energy Conversion I
Lecture 16 - Electromechanical Energy Conversion II
Lecture 17 - Electromechanical Energy Conversion III
Lecture 18 - DC Machines: Introduction, Constructional Features
Lecture 19 - DC Machines: EMF and Torque Equations and Generator Operation
Lecture 20 - DC Machines: OCC and Load Characteristics Classification
Lecture 21 - DC Machines: Armature Reaction
Lecture 22 - DC Machines: Voltage Build-Up and Load Characteristics
Lecture 23 - DC Generator Characteristics and Introduction to DC Motors
Lecture 24 - DC Motors: Basics and Speed-Torque Relationship
Lecture 25 - DC Motor: Speed Control (Shunt and Separately Excited Motor)
Lecture 26 - DC Motor: Speed Control (Series and Compound Motor)
Lecture 27 - DC Machine: Starting and Braking
Lecture 28 - DC Machine: Comutation
Lecture 29 - 3 Phase Induction Machine: Constructional Features and Principle of Operation
Lecture 30 - 3 Phase Induction Machine: Equivalent Circuit
Lecture 31 - 3 Phase Induction Machine: Speed Torque Characteristics
Lecture 32 - Testing of Induction Motor: OC and SC Test
Lecture 33 - 3 Phase Induction Machine: Starting Methods
Lecture 34 - Synchronous Machines: Introduction
Lecture 35 - Synchronous Machines: Constructional Features
Lecture 36 - Numerical Session
Lecture 37 - Synchronization of Alternators
Lecture 38 - Synchronous Machines: Equivalent Circuit and Phase Diagram
Lecture 39 - Synchronous Machines: OC and SC Test
Lecture 40 - Synchronous Machines: Power Angle Relationship, V and Inverted V Curves
Lecture 41 - Single Phase Induction Motors

Electrical Machines
Instructor: Prof. G. Bhuvaneshwari, Department of Electrical Engineering, IIT Delhi. The course introduces electrical machines - namely transformers, DC and AC rotating machines.