Electrical Machines

This NPTEL course from IIT Delhi covers electrical machines from the magnetic circuit upward. It starts with AC circuits and magnetic circuit basics, then spends a large share of its 42 lectures on transformers before moving to electromechanical energy conversion.

Transformers in depth

The transformer lectures go step by step: amp-turn balance, ideal and practical behaviour, the equivalent circuit, leakage reduction, regulation and efficiency. Auto-transformers, per-unit notation and instrument transformers follow, then three-phase transformers in two parts.

Who it is for

• Electrical students who want the transformer equivalent circuit explained with the reasoning behind each parameter.
• Learners preparing for power systems or machines exams who need per-unit notation made clear.
• Anyone who wants to link magnetic circuits to the machines that rely on them.