Magnetizing Inductance Calculation — Lesson 4

This lesson covers the process of calculating magnetizing inductance in a machine. It explains how the magnetizing inductance can be determined based on the magnetic energy stored at the air gap. The lesson further elaborates on the equations used to find the magnetizing current and how to calculate the voltage at the air gap. For instance, the lesson explains how the magnetic energy stored at the air gap can be represented in terms of flux density and magnetic field intensity with respect to the volume integral.

Video Highlights

00:00 - Introduction
00:18 - Explanation of Magnetizing Inductance
02:52 - Calculation of magnetizing inductance using equations
03:13 - Explanation of magnetic field density and magnetic field intensity
8:46 - Calculation of magnetic energy stored at the air gap with respect to poles
10:06 - Calculation of magnetizing current per phase
11:53 - Calculation of voltage at the air gap

Key Takeaways

- The magnetizing inductance can be calculated based on the magnetic energy stored at the air gap.
- The magnetic energy stored at the air gap can be represented in terms of flux density and magnetic field intensity with respect to the volume integral.
- The magnetizing current can be calculated using the equations for field energy and inductance.
- The voltage at the air gap can be calculated using the magnetizing inductance and current.
- Understanding these calculations is crucial for determining the performance of a machine.