## Course Description

Welcome to our course “Electrical Machines Course: DC, Synchronous and Induction Machines and Transformer”. This course is designed for anyone who would like to learn about electrical machines from A to Z for electrical engineers including DC machines, magnetic circuits, transformers, synchronous machines, and induction machines.

**The following topics will be discussed in detail:**

- Importance and construction of DC machines
- Armature winding and emf equation
- Separately excited DC machine
- Shunt and series DC machines
- Types and applications of compound DC motors
- Torque-speed characteristics and speed control of separately excited DC motor
- Torque-speed characteristics of series DC motor
- Starting of DC machine
- Armature reaction in DC machines
- Losses in DC machines
- Dozens of solved examples on all types of DC machines
- Importance of the magnetic circuit and its application like transformer
- Difference between linear and non linear materials
- Important definitions of magnetic circuits, flux linkage and reluctance
- Analogy between the magnetic and electric circuits (resistance, reluctance, conductivity, permeability, emf, mmf, current, flux, etc.)
- Induced emf, fringing effect and ampere right hand rule or screw rule
- Importance of transformers and why it is considered as the backbone of the power system
- Construction of the transformer and its main components
- Iron core which is responsible for the magnetic flux action
- Magnetic circuit which is represented by the iron core
- Windings of transformer, types, categories and construction
- Insulating material between the windings and iron core + transformer oil and its great importance
- Conservator of transformer which contains oil and its function
- Breather which is used as filter in transformer
- Bushings which is important for human safety and protection from instant death
- Tap changer which is used to control the voltage according to the load variations
- Cooling tubes for transformer oil cooling and heat dissipation

- Buchholz relay in transformer for gas detection
- Explosion vents for protection of transformer in case of internal faults
- Different methods of cooling of transformer and their corresponding power rating
- Different types of transformers as power and distribution transformers
- Difference between single phase core and shell type transformers
- Difference between three phase core and shell type transformers
- Comparison between the shell type and core type transformers
- Theory of operation of transformer
- Effect of loading on transformer
- Transformer rating, regulation and efficiency
- Different losses occurring in transformer
- Approximate and exact equivalent circuits of the transformer
- Voltage relation in the transformer
- Ideal and non-ideal transformers and understand which one of them represents an actual real-life transformer
- Concept of referring in transformer
- Principle of operation of synchronous motor
- Construction and principle of operation of synchronous generator
- Equivalent circuit and phasor diagram of salient synchronous machine
- Equivalent circuit and phasor diagram of non-salient synchronous machine
- Parallel operation of two generators
- Synchronization of the machine with the grid
- Dozens of solved examples on synchronous machines salient and non-salient
- Construction and theory of operation of induction machines
- Equivalent circuit and power flow in the induction motor
- Torque-speed characteristics of induction motor
- Methods of speed control of induction motor
- Methods of starting induction motor
- Principle of operation of doubly fed induction generator
- Self-excited induction generator
- Dozens of solved examples on induction machines

## Course Summary

- DC Machines
- Construction of Transformer
- Fundamentals of Magnetic Circuits
- The theoretical part on Transformers
- Synchronous Machines
- Induction Machines

## Who Is This Course For

- Electrical Engineers,
- Technologists,
- Industrial Technicians,
- Electricians,
- Students.

## Requirements

Must have knowledge about Fundamentals of Electric Circuits

## Downloadable course documents

**After purchasing the course, students can download the following PDF documents:**

- Construction Of Transformer Written
- DC Machines Course slides
- Induction Machines slides
- Synchronous Machines slides
- Transformers
- Magnetic Circuits
- Construction and Maintenance of High Voltage Power Transformers (For Students)
- The basics of power transformers in transmission and distribution grids
- Transformers and equipment in underground distribution systems
- Current and Voltage Instrument Transformers – Technical and Application Guide
- Synchronous machines (generator and motor) in a nutshell
- Electric motor selection, control and maintenance guidelines
- AC-DC motors installation, principle of operation, troubleshooting and repair
- Electric motors – Energy efficiency reference guide for novice and experienced users
- All about wiring of electric motors
- Basic training for industrial electric motors, gearmotors and AC-DC drives
- Premium-Efficiency-Motor-Selection-and-Application-Guide
- AC motor selection and application guide
- Guide to specification of electric motors
- IEC Low Voltage Motors Guide
- The Motor Book
- Basic knowledge of AC electrical generators for students
- Introduction to motor and generator

## Course Content

#### About Instructor

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