Rotor alignment for reducing vibrations and noise
AssigneeSiemens Aktiengesellschaft
InventorsKlaus Büttner, Klaus Kirchner, Matthias Warmuth, Norbert Wöhner
Life of this patent
Estimating the term…
Abstract
For reducing vibrations and noise in electrical machines a rotor is mounted in a magnetic alignment device while a bearing shield is loosely held relative to a stator. The rotor is driven by the stator and vibrations of the rotor are detected. A magnetic alignment device is controlled so as to reduce the vibrations. Finally the bearing shield is fixed to the stator in a position determined by the controlling of the magnetic alignment device. Thus electromagnetic forces are taken into consideration during vibration and noise reduction.
Claims10
A method for mounting a rotor in a stator of an electrical machine, comprising:
- mounting the rotor in a magnetic alignment device, while a bearing shield, to which at least one rolling bearing for support of the rotor is fastened, is loosely held in relation to the stator;
- driving the rotor by the stator;
- detecting first vibrations of the rotor;
- controlling the magnetic alignment device such as to reduce the first vibrations;
- and
- fixing the bearing shield to the stator in a position determined by the controlling of the magnetic alignment device.
A mounting system for mounting a rotor in a stator of an electrical machine, comprising:
- a magnetic alignment device for mounting the rotor in a rolling bearing;
- an activation device configured to activate the rotor by the stator;
- a sensor device configured to detect vibrations of the rotor in an operating state in which the rotor is driven by the stator;
- and
- a control device configured to control the magnetic alignment device such as to reduce the vibrations.
Dependencies are inferred from the claim text.