Understanding Electrical Machines: Transformer Regulation — Lesson 1

This lesson covers the concept of transformer regulation in electrical machines. It explains the mathematical expression for regulation and how it can be expressed in terms of primary and secondary. The lesson also discusses the concept of per unit resistance and per unit impedance leakage. It further explains how the regulation of a transformer can be reduced by distributing the windings in both the limbs of the transformer. The lesson also highlights the importance of maintaining a certain level of leakage impedance to limit short circuiting current. Towards the end, the lesson introduces the concept of auto transformers.

Video Highlights

00:15 - Introduction to transformer regulation
01:08 - Discussion on per unit resistance and per unit impedance leakage
07:47 - Explanation on how to reduce the regulation of a transformer
15:40 - Importance of maintaining a certain level of leakage impedance
29:25 - Introduction to auto transformers

Key Takeaways

• Transformer regulation is a crucial concept in electrical machines, which can be mathematically expressed in terms of primary and secondary.
• The per unit resistance and per unit impedance leakage are important parameters in understanding transformer regulation.
• The regulation of a transformer can be reduced by distributing the windings in both the limbs of the transformer.
• Auto transformers are another type of transformer that work on the same principle of voltage transformation.