Analysis of Salient Pole Synchronous Machine — Lesson 7

This lesson covers the detailed analysis of synchronous machines, focusing on the two types: cylindrical rotor or uniform gap (also known as non-salient pole type) and salient pole type. The lesson explains how these machines are classified based on the rotor structure where the field winding is housed. It further elaborates on the differences in the analysis of these two types of machines, particularly in their phasor diagrams. The lesson also discusses the concept of armature reaction reactance and how it varies in cylindrical and salient pole type machines. The instructor uses the example of a generator operating at a lagging power factor to illustrate the phasor diagram and the calculation of the internal power factor angle.

Video Highlights

00:15 - Introduction to synchronous machines and their types
01:35 - Explanation of the phasor diagram for cylindrical rotor type machines
04:19 - Illustration of a generator operating at a lagging power factor
07:38 - Calculation of the internal power factor angle
15:25 - Phasor diagram and expression for reactive power

Key Takeaways

- Synchronous machines are classified into two types based on the rotor structure where the field winding is housed: cylindrical rotor or uniform gap (non-salient pole type) and salient pole type.
- The analysis of these two types of machines differs, especially in their phasor diagrams.
- Armature reaction reactance varies in cylindrical and salient pole type machines.
- The phasor diagram of a generator operating at a lagging power factor can be used to calculate the internal power factor angle.