Modelling and Analysis of Electric Machines

This learning track covers a comprehensive understanding of electrical machines, their principles, modeling, and analysis. It starts with the basic concepts of magnetic fields and circuits, exploring the generation of magnetic fields in electrical machines, the role of iron, and the concept of inductance. The track then delves into electromechanical motion systems, focusing on singly excited linear systems, field energy, and equilibrium points. It further explores inductance in constant air gap machines, salient pole machines, and distributed windings, discussing the significance of the magnetic field, flux density distribution, and the process of machine assembly. The track also covers the understanding of Direct Current (DC) machines and their models, small signal models, and their application in control system applications. It then moves on to the transformations of reference frames in induction machines, steady state and dynamic modeling of electrical machines, and the comprehensive modeling of salient pole synchronous machines. The track concludes with the study of salient pole synchronous machine reactances and the performance of salient pole alternators under a sudden three-phase short circuit.

These courses have been developed by Prof. Krishna Vasudevan from IIT Madras for NPTEL. They are now accessible through Ansys Innovation Space courtesy of the partnership between Ansys and NPTEL, under the CC BY-SA license. For more details, visit https://nptel.ac.in/courses/108106023.

1
Innovation Course

Understanding Magnetic Fields and Circuits

This course covers the fundamental principles of magnetic fields and circuits. It starts with the basic concepts of modeling electrical machines, explaining the correlation between the electrical side and the system's response. The course further explore...Read more

2
Innovation Course

Electromechanical Motion Systems

This course covers the fundamental concepts of electromechanical motion systems. It begins with an exploration of the singly excited linear system, using a coil bound around a hollow length with an iron bar as an example. The course then delves into the concept of...Read more

3
Innovation Course

Inductances in Constant Air Gap and Salient Pole Machines

This course covers the comprehensive understanding of inductance in electrical machines, focusing on both constant air gap machines and salient pole machines. It delves into the significance of the magnetic field, its interaction with the ...Read more

4
Innovation Course

Inductances in Distributed Windings

This course covers the comprehensive understanding of inductances in distributed windings. The course delves into the challenges of determining the self-inductance of a single coil on the stator due to complex air variations and changing flux density waveforms....Read more

5
Innovation Course

Understanding Inductances in Electrical Machines

This course covers the comprehensive understanding of inductance in electrical machines, with a special focus on machines with a cylindrical rotor, cylindrical stator, and salient pole rotor. It delves into the complexities of determining the self-...Read more

6
Innovation Course

Small and Large Signal Models of DC Machine

This course covers the comprehensive understanding of Direct Current (DC) machines and their models. It begins with the derivation of machine equations, focusing on a four-coil primitive machine. The course then explores the system description in the op...Read more

7
Innovation Course

Transformations of Reference Frames in Induction Machines

This course covers the comprehensive understanding of induction machines and their transformations. It begins with the exploration of arbitrary reference frames in the modeling and analysis of machines, discussing the transformation of the...Read more

8
Innovation Course

Modelling of Salient Pole Synchronous Machines

This course covers the comprehensive modeling of salient pole synchronous machines. It begins with an exploration of alternators, comparing and contrasting the stator of the alternator and the induction machine. The course then delves into the struct...Read more

9
Innovation Course

Steady State and Dynamic Modeling of Induction Machines

This course covers the comprehensive understanding of steady state and dynamic modeling of electrical machines, primarily focusing on induction machines and alternators. It provides a deep dive into the development of steady state models, de...Read more

10
Innovation Course

Reactances of Salient Pole Synchronous Machine

This course covers the comprehensive study of Salient Pole Synchronous Machine reactances. It begins with the vector control formulation and the alternative machine model, providing a detailed explanation of the alternator equations and their specifi...Read more

11
Innovation Course

Three Phase Alternator Short Circuit Analysis

This course covers the comprehensive study of salient pole alternators and their performance under a sudden three-phase short circuit. For instance, the course begins with the derivation of the salient pole alternator's equation and its equivalent cir...Read more

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