Fractional Slot Windings — Lesson 5

This lesson covers the design of stator winding with a focus on fractional slot windings. It explains the concept of coil pitch, the selection of the number of coils, and the process of making connections using stubbing and arrow check representation. The lesson also provides a detailed explanation of the complete winding design using an example of an 18 slot 3-phase 4-pole winding. It further discusses the winding design procedure, including defining the number of turns, conductor gauge selection, and the placement of coils in respective slots. The lesson concludes with the verification of the developed winding and the validation of the complete machine at the rated operating conditions.

Video Highlights

00:00 - Introduction to stator winding design
00:23 - Explanation of fractional winding
14:23 - Explanation of stubbing approach for winding connections

Key Takeaways

- The stator winding design involves the selection of the number of coils and the determination of coil pitch.
- The connections are made using stubbing and arrow check representation.
- The winding design procedure includes defining the number of turns, selecting the conductor gauge, and placing the coils in respective slots.
- The developed winding is verified using the right-hand thumb rule for magnetic pole formation.
- The complete machine is validated at the rated operating conditions to ensure its proper functioning.