Abstract Targeted magnetic flux guidance in the rotor cross section of rotational electrical machines is crucial for machine’s efficiency. Cutouts steel sheets are integrated guidance. These cutouts create thin structures which limit maximum achievable speed under centrifugal forces and energy density rotating machine. In this paper, embossing-induced residual stress, employing magneto-mechanic...

The global drive to reduce energy consumption poses new challenges for designers of electrical machines. Losses in the core are a significant part losses, especially machines operating at an increased rotational speed powered by PWM inverters. One important problems when calculating losses is considering effect material degradation due mechanical or laser cutting. To this aim, paper analyzes an...