Inductance in Salient Pole Machine - III — Lesson 4

This lesson covers the procedure to derive the inductance, the flux density distribution around the inner circumference of the stator, and the flux linkage. It further elaborates on the fundamental term in the flux linkage and how to calculate the peak flux density. The lesson concludes with the derivation of the self-inductance of the rotor and stator coil.
It also covers the MMF distribution around the circumference of the stator.

Video Highlights

00:11 - Introduction
01:18 - Explanation of the flux density distribution inside the machine and its waveform
04:12 - Discussion on the expression for the flux linkage
12:03 - Discussion on the self inductance of the rotor and stator coils
29:30 - Explanation of the MMF distribution around the circumference of the stator
40:12 - Discussion on the spatial distribution of the MMF

Key Takeaways

- The flux linkage is derived by considering an elemental flux linkage, which involves finding out how much flux is passing through an elemental area around the inner circumference of the stator.
- The fundamental term in the flux linkage can be written as an expression, and for most analyses, it is sufficient to consider only this term.
- The peak flux density can be calculated by looking at the rotor geometry and deriving an expression for it.
- The self-inductance of the rotor and stator coil is derived by considering the MMF and the total reluctance.