Basic Elements of Electric Machines

This lecture covers the basic elements of electric machines, including magnetic circuits, transformers, and different types of machines such as asynchronous, direct current, synchronous, and stepper motors. It explains the generation of electromagnetic torque, the concept of reluctance torque, and the relationship between magnetic induction and mechanical speed. The lecture also delves into the principles of electromagnetic coupling, the significance of the number of pole pairs, and the calculation of reluctances. Additionally, it discusses the concept of per-unit values for electrical quantities and provides practical exercises related to phase currents, resistances, and power in a three-phase system.