Induction Machine in Pseudo-Stationary Reference Frame — Lesson 6

This lesson covers the transformation to the stationary reference frame in electrical engineering. It explains the process of moving from a three-phase machine to an alpha beta zero reference frame for both the stator and rotor. The lesson further discusses the concept of mutual inductance, the inductance matrix, and the transformation of rotor to a stationary axis. It also elaborates on the operational impedance form of the electrical equations and the advantages of having the description in this form. For instance, a two-phase machine is used as an example to illustrate these concepts.

Video Highlights

00:12 - Introduction
02:13 - Discussion on the inductance matrix
06:44 - Transformation of the rotor to a stationary axis
08:06 - Explanation of the relationship between the flow of currents
13:43 - Transformation for voltages and defining augmented matrix
43:55 - Explanation of the operational impedance form

Key Takeaways

- The transformation to the stationary reference frame involves moving from a three-phase machine to an alpha beta zero reference frame.
- The mutual inductance between the two axes is zero.
- The inductance matrix can be divided into four sub matrices.
- The transformation of the rotor to a stationary axis helps to eliminate the rotor angle from the equations.
- The operational impedance form of the electrical equations is easier to handle as the impedance is not dependent on the rotor angle.