Rotating Machines and Coils

This course covers the fundamental aspects of rotating machines, focusing on the role of coils and their dynamics. It delves into the concept of magnetic field distribution in electrical machines, explaining how the air gap field distribution plays a crucial role in generating AC voltage. The course further discusses the difference between electrical and mechanical degrees and their relationship with the number of poles in a machine. It also introduces the concept of coil span and its importance in the generation of induced voltage. The course provides a detailed explanation of how to calculate the induced voltage in a multi-turn coil and how to express this voltage in terms of flux per pole. An example of this is given through the derivation of the expression for the induced voltage in a coil. The course concludes by explaining the advantages of distributed winding and how voltage loss can be compensated.