Power-Sharing Control in Bearingless Multi-Sector and Multi-Three-Phase Permanent Magnet Machines

This article deals with the power-sharing control of bearingless multisector and multithree-phase permanent magnet machines. The proposed control strategy allows to distribute the power flows among the three-phase inverters supplying the machine during bearingless operation of the drive. The control...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2021-10, Vol.68 (10), p.9070-9080
Main Authors: Sala, Giacomo, Valente, Giorgio, Nardo, Mauro Di, Degano, Michele, Zanchetta, Pericle, Gerada, Chris
Format: Article
Language:English
Subjects:
Aerospace electronics
Bearingless machines
Force
force control
Harmonic analysis
machine vector control
magnetic levitation
Magnetism
multiphase drives
permanent magnet machines
Permanent magnet motors
Permanent magnets
Power flow
Power-sharing
Rotors
Synchronous machines
Torque
variable speed drives
Windings
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Summary:This article deals with the power-sharing control of bearingless multisector and multithree-phase permanent magnet machines. The proposed control strategy allows to distribute the power flows among the three-phase inverters supplying the machine during bearingless operation of the drive. The control technique is based on the extension of the vector space decomposition modeling approach. The components producing the electromagnetic torque, i.e., the q -axis currents, are controlled independently from the d -axis ones, also with the aim of managing the power flows among the three-phase systems. Conversely, the d -axis currents are exploited for the generation of the radial forces needed to levitate the rotor, while considering the compensation of the forces caused by the q -axis currents in case of unbalanced power sharing strategy. The validity of the proposed method is confirmed by simulations and experimental tests on a prototyped bearingless multisector permanent magnet synchronous machine. The proposed approach is a contribution to the development of advanced control systems employing multiphase drives in the field of bearingless and multiport applications.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2020.3026273