Why is Skew Geometry Needed for Motor Design?

Since the invention of the direct current machine in 1837, the first patent field on AC machine was in 1887. With the advent of power electronics, several improvements have been made to the performance and efficiency of electrical machines. In recent years , new constraints have been imposed on the manufacturers of electrical machines. The first regulation imposes a limitation of the acoustic noise. The second constraint is economic, imposed by operators who want to minimise costs resulting from materials maintenance. The third constraint is technical and targets increased performance of the machines while minimising the impact on the environment.

To accompany this progress CEDRAT has developed tools that allow designers to model and optimize the system to meet these constraints. Among the Flux simulation software, we find Skew geometries. This tool allows the user to study the Skew effect on the performances of the machine to meet the needs of the constraints.

So, applying an optimal Skew angle reduces torque ripple and cogging torque which thus reduces the noise and vibration on the motor.

Read more in the following article : Study of mounted surface permanent magnet synchronous machine using Flux® Skew