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-inductance of a single coil on the stator, considering the intricate air variations and changing flux density waveforms. For instance, the course introduces Blondel's two-reaction theory as a solution to these complexities. It further explores the concept of phase spread and the impact of a distributed stator wind on inductance. The course also discusses the relationship between the mechanical and electrical angle in a two-pole machine, the concept of flux linkage in the stator winding, and the impact of leakage flux on self-inductance. It concludes with the derivation of the expression for mutual inductance between two phases.