Method for cleaning permanent-magnet rotor of e.g. electric drive motor, involves applying centrifugal force to soft magnetic material adhering to rotor resulting in attraction of detached materials to rotor surrounding magnetic field

摘要

The method involves displacing a rotor (1) is such that centrifugal force which is greater than an attractive force between the permanent magnets of rotor and soft magnetic materials adhering to rotor, is applied to soft magnetic material adhering to the rotor resulting in attraction of detached soft magnetic materials to rotor surrounding magnetic field. The strength of the magnetic field surrounding the rotor is controllable by force acting on rotor surface, based on the rotational speed and magnetic field strength of permanent magnets of the rotor. An independent claim is included for device for cleaning permanent-magnet rotor of electrical machine.