Modelling of Salient Pole Synchronous Machines - I — Lesson 1

This lesson covers the modeling of alternators, highlighting the similarities and differences between the stator of the alternator and the induction machine. It also elaborates on the structure of the rotor in both machines, explaining the role of the field winding in the rotor. The lesson then delves into the representation of the cylindrical rotor machine and the salient pole rotor structure. It also explains the concept of damper bars and their role in damping out rotor movements. Towards the end, the lesson provides a detailed explanation of how to model the alternator and derive equations to describe its behavior.

Video Highlights

00:13 - Introduction
01:30 - Discussion on the modeling of alternators and the similarities and differences between the stator of the alternator and the induction machine
02:08 - Explanation of the two varieties of the synchronous machine rotor: the cylindrical rotor stator and the salient pole variety
09:25 - Explanation of the damper bars in the salient pole rotor and their function
14:30 - Discussion on the modeling of the alternator and the equations used to describe it
20:23 - Explanation of the self-inductance of the stator A phase and the mutual inductance between the phases
31:23 - Discussion on the mutual inductance between the field and the A phase of the stator

Key Takeaways

- The stator of the alternator is similar to that of the induction machine, but the rotor is quite different.
- The rotor in the alternator contains a source of excitation, which is absent in the induction machine.
- Damper bars are used in the rotor to damp out rotor movements.
- The modeling of the alternator involves deriving equations to describe its behavior.