Inductance and Energy Storage — Lesson 4

This lesson covers the concept of self and mutual inductances in electrical machines, specifically focusing on transformers. It explains how to calculate the equivalent circuit of a transformer and the importance of the direction of flux. The lesson also discusses the concept of leakage flux and mutual flux, and how they contribute to the inductance of a coil. It further elaborates on the relationship between self-inductance, mutual inductance, and energy storage in a mutually coupled coil. The lesson concludes with an explanation of how to calculate the energy stored in a mutually coupled coil.

Video Highlights

01:17 - Understanding of leakage flux and mutual flux
03:20 - Calculation of the equivalent circuit of a transformer
09:36 - Relationship between self-inductance, mutual inductance, and energy storage
23:58 - Calculation of energy stored in a mutually coupled coil

Key Takeaways

- The equivalent circuit of a transformer can be calculated using the concepts of self and mutual inductances.
- The direction of flux is crucial in determining the inductance of a coil.
- Leakage flux and mutual flux are two components of the total flux in a coil.
- The energy stored in a mutually coupled coil can be calculated using the relationship between self-inductance and mutual inductance.