Patent ID: 6365996
Filing Date: 2002-04-02
Classification: F16C,H02K

Abstract:
A radial, active magnetic Maxwell-bearing apparatus comprising at least three electromagnets which are distributedly arranged, wherein said apparatus further comprises:a three-phase rotary current controller for supplying a current to the electromagnets; a position sensor for measuring the position of the rotor in two radial directions; and a programmable microprocessor, wherein the microprocessor stores a desired value of the position of the rotor in two directions, calculates control deviations in two directions, calculates desired current values for the three-phase rotary current controller by a two- to three-phase transformation, and provides the calculated current values to the three-phase rotary current controller so that the electromagnets are supplied with current in such a manner that the position of the rotor corresponds to the desired value stored, and wherein the current supplied to each electromagnet is dependent upon the current supplied to the other electromagnets.