Design of Stator Winding — Lesson 4

This lesson covers the intricate details of induction machine design. It explains the winding factor and how to calculate the number of turns per phase. The lesson also discusses how to select the type of coil based on SWG data, the area of cross-section, copper weight, and coil resistance. It provides examples on how to calculate winding factors for a 3-phase induction machine and 4-pole winding. The lesson further delves into wire selection, calculation of RMS current, and the selection of current density based on material. It also explains how to calculate the length of a coil, resistance of a coil, volume of copper, and weight of copper in the winding.

Video Highlights

00:00 - Introduction
01:02 - Example of winding factor calculation
08:41 - Discussion on wire selection and calculation of RMS current
12:07 - Calculation of length, resistance, volume, and weight of a coil
26:34 - Conclusion and summary of the lesson

Key Takeaways

- The winding factor is crucial in induction machine design.
- The number of turns per phase can be determined once the winding factor is known.
- The type of coil, copper weight, and coil resistance can be selected and calculated based on SWG data.
- The length, resistance, volume, and weight of a coil are essential parameters in machine design and can be calculated using specific formulas.
- Short pitch winding can reduce the length of a coil, thereby reducing resistance and losses, and improving efficiency.