METHOD OF CONTROLLING THE ROTOR POSITION OF ELECTRIC MACHINE ON NON-CONTACT BEARINGS (VARIANTS) AND ELECTRIC MACHINE FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC H02K7/09 F16C32/04 

FIELD: machine building.

SUBSTANCE: invention relates to the field of power engineering and can be used in electromechanical energy converters in non-contact bearings. In the method of controlling the position of the rotor of the electric machine in the right and left signal winding that are stacked in each slot of the electric machine, generate a high-frequency magnetic field which frequency is greater than the frequency of the fifth harmonic of the electric machine, while in the electrically conductive elements of the rotor eddy currents are induced, that create a secondary magnetic field, its effect is perceived by the measuring winding, and by measuring the signal from the measuring right and left windings, the spatial position of the rotor is judged. Signals of the right and left windings should be symmetrical, with the asymmetry of these signals, the angular distortions of the rotor is judged. Data on changes in rotor spatial position and angular coordinate is fed to controller and power converter for them to control the effects of control elements. In a second variant,of method of controlling the position of the rotor, a signal is sensed from the windings of the electric machine, its variation is judged on the spatial position of the rotor. Information about the change in the spatial position of the rotor enters the regulator and the power converter, that regulate the magnitude of the effect of the control elements. Electrically conductive elements of the rotor of the electric machine are notched. In the electrically conductive elements of the rotor, under the influence of the field of the main winding, eddy currents are induced, that create a secondary magnetic field in the power winding, its effect is perceived by the power winding. Since on the electrically conductive elements of the rotor there are notches, the secondary field perceived by the power winding is distorted. By measuring the distorted magnetic field from the power winding, the spatial position of the rotor is judged. Data on changes in rotor spatial position and angular coordinate is fed to controller and power converter for them to control the effects of control elements. Electric machine stator has a slot. In the stator grooves, left and right measuring windings that form a measuring signal are additionally placed. Control system contains filters with the possibility of filtering the voltage induced by the rotor in the measuring winding.

EFFECT: increasing the accuracy of control and reliability of an electric machine with a rotor on contactless bearings, the possibility of using in all types of non-contact bearings and measuring the rotor's distortions in the axial direction.

3 cl, 1 dwg