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PROPOSITION OF THE DIFFERENTIAL FEEDBACK CONTROL OF ROTOR’S POSITION FOR CONTACTLESS SUPPORT
Kozánek, Jan ; Synek, L. ; Sýkora, Petr
This paper proposes a differential method for the position control of electromagnetic actuator. The differential method is frequently used by active magnetic bearing in industrial application too. The controller is consisted of position regulator and two current regulators with auxiliary differential part, where is counted a difference between biases current and position current. Thus the controller contains a current feedback and a position feedback. The current feedback is used as current control into exciting coil and the air-gap is measured by an eddy current position sensor. The position stabilization of the contactless rotor is provided by suitable analogue regulator.
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Operation testing of the rotor supported on aerodynamic bearings
Vaník, J. ; Šafr, M. ; Šimek, J. ; Kozánek, Jan ; Veselý, Jan
A high-speed synchronous electric machine has been modified to run on contactless aerodynamic bearings designed and manufactured within this project. The experience gained during putting the motor in operation at the Institute of Thermodynamics is described and the first results from the test runs at speeds up to 50,000 rpm (basic diagnostic measurement of rotor relative vibration and subsequent spectral identification) are presented.
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Permanent and active magnetic bearings
Kozánek, Jan ; Stolařík, M. ; Šafr, M.
In this paper, the design of a permanent contactless radial bearings was studied. The motor will be used as dynamic stand for further research in the field of vibration and stability problems in rotor dynamics. Due to insufficient reliability of analytical calculation of permanent magnet forces, preliminary measurements on a simple device were performed. The results obtained were used for the dimensioning of the bearings to be designed.
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Permanent and active magnetic bearings
Kozánek, Jan ; Stolařík, M. ; Šafr, M.
In this paper, the design of a permanent contactless radial bearings was studied. The motor will be used as dynamic stand for further research in the field of vibration and stability problems in rotor dynamics. Due to insufficient reliability of analytical calculation of permanent magnet forces, preliminary measurements on a simple device were performed. The results obtained were used for the dimensioning of the bearings to be designed.
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