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2021 | OriginalPaper | Buchkapitel

Active Control of Bridge Configured Self-bearing Motor, a Numerical Study

verfasst von: Gaurav Kumar, Karuna Kalita, Kari Tammi

Erschienen in: Proceedings of the 6th National Symposium on Rotor Dynamics

Verlag: Springer Singapore

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Abstract

Vibration is a major concern of the rotating machine industry. The wear and tear of the support bearing and the eccentric motion of the rotor are among the main sources of vibration of an electrical machine. The development of a bearingless machine is a good way to address this problem. This paper mainly focuses on the development of a bearingless bridge configured winding (BBCW) induction motor. The bridge configured winding (BCW) is a specialized single set of winding scheme, which has the capability to produce the torque and the transverse force simultaneously. There are two sets of supply for this winding scheme. The three-phase main supply produces a p-pole pair of the magnetic field and is responsible for the torque-producing component. The external supply in the bridges produces a p ± 1 pole pair of the magnetic field. The interaction between these two fields produces a net radial force, which is used to neutralize the various forces acting on the rotor and the weight of the rotor. The magnitude and the direction of this magnetic force can be controlled by supplying currents or voltages at different frequencies and amplitudes through the bridge points of the BCW winding. There is no study in the literature related to the development of bearingless machine using BCW scheme. In the present work, a Simulink model of a BBCW induction motor has been developed. The convergent control scheme has been used for the control of forces of various frequencies acting on the rotor. The PID controller has been used for the levitation of the rotor. The shaft of the motor has been modeled as a Euler–Bernoulli beam, and it is supported by only one isotropic bearing at the one end. The other end of the rotor has been kept unsupported to demonstrate the levitation effect.

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Literatur
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Zurück zum Zitat Khoo W, Kalita K, Garvey SD (2011) Practical implementation of the bridge configured winding for production of controllable transverse forces in electrical machines. IEEE Trans Magn 47:1712–1718 CrossRef Khoo W, Kalita K, Garvey SD (2011) Practical implementation of the bridge configured winding for production of controllable transverse forces in electrical machines. IEEE Trans Magn 47:1712–1718 CrossRef
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Zurück zum Zitat Kumar G, Kalita K, Tammi K (2018) Analysis of bridge currents and UMP of an induction machine with bridge configured winding using coupled field and circuit modeling 54:1–16 Kumar G, Kalita K, Tammi K (2018) Analysis of bridge currents and UMP of an induction machine with bridge configured winding using coupled field and circuit modeling 54:1–16
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Zurück zum Zitat Belmans R, Heylen W, Vandenput A, Geysen W (1984) Influence of rotor-bar stiffness on the critical speed of an induction motor with an aluminium squirrel cage. IEE Proc B Electr Power Appl 131:203–208 CrossRef Belmans R, Heylen W, Vandenput A, Geysen W (1984) Influence of rotor-bar stiffness on the critical speed of an induction motor with an aluminium squirrel cage. IEE Proc B Electr Power Appl 131:203–208 CrossRef
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Metadaten
Titel
Active Control of Bridge Configured Self-bearing Motor, a Numerical Study
verfasst von
Gaurav Kumar
Karuna Kalita
Kari Tammi
Copyright-Jahr
2021
Verlag
Springer Singapore
DOI
https://doi.org/10.1007/978-981-15-5701-9_17

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