Ferrari runner
Ferrari rotor is a type of rotor for asynchronous motors that goes back to Galileo Ferraris .
Ferrari runners are mostly made of aluminum , but unlike squirrel cage runners, they do not contain iron. They have the shape of a thin disk, as in electromechanical Ferraris meters , or a thin-walled cylinder, as in highly dynamic servomotors for aircraft. The rotor moves in the rotating magnetic field due to the eddy currents induced in it and their magnetic fields . Its advantage is the extremely low moment of inertia compared to squirrel cage rotors (due to the outsourcing of the iron) and the smoother running (due to its higher symmetry).
literature
- Rolf Fischer: Electrical machines . 14th edition. Hanser, 2009, ISBN 978-3-446-41754-0 .