Modeling and control of an unbalanced magnetic rotor-bearing system as a bearingless motor
Abstract
Purpose
This paper is concerned with the design and analysis of a bearingless motor.
Design/methodology/approach
The bearingless motor is obtained by a regular three-pole active magnetic bearing with an intentionally attached unbalanced mass on the rotor. It is the unbalanced mass that will generate the rotational torque for the motor function. Modeling and control of the unbalanced mass-type bearingless motor have been considered.
Findings
It is found through simulations that both functions of motor and magnetic bearing can indeed be achieved in this system.
Originality/value
This novel bearingless motor requires no additional windings and permanent magnets. Thus, it can greatly reduce the cost and design of the bearingless motor.
Keywords
Acknowledgements
This work is supported by the Ministry of Science and Technology of Taiwan, ROC, under the Grant MOST 103-2221-E-194 -008.
Citation
Chen, S.-L., Lee, P.-H. and Toh, C.-S. (2017), "Modeling and control of an unbalanced magnetic rotor-bearing system as a bearingless motor", Engineering Computations, Vol. 34 No. 7, pp. 2212-2227. https://doi.org/10.1108/EC-05-2017-0167
Publisher
:Emerald Publishing Limited
Copyright © 2017, Emerald Publishing Limited