Bouheraoua, M., Wang, J. and Atallah, K. (2014) Slip Recovery and Prevention in Pseudo Direct Drive Permanent-Magnet Machines. IEEE Transactions on Industry Applications, 51 (3). 2291 -2299. ISSN 0093-9994
Abstract
A Pseudo Direct Drive (PDD) is a permanent magnet machine with an integrated magnetic gear. It has two magnetically coupled rotors. When subjected to a load torque higher than the pull-out torque, slip between the two rotors may occur. Although this may not cause any damage to the PDD or the load, it could, if left uncontrolled, result in undesirable consequences such as loss of power transfer, excessive speed on the high-speed rotor (HSR), incorrect commutation signal, and/or loss of load speed/position control. This paper proposes a technique for a PDD equipped with a position/speed sensor on each rotor to control the slip caused by external overload torques and to enable a swift recovery when they are removed. However, when the PDD is equipped with only one sensor on the HSR, it is impossible to determine the position/speed of the low-speed rotor using an observer after slip occurs, which precludes a swift and controlled recovery. Therefore, a novel technique which prevents the slip between the two rotors under overload conditions is also proposed. Both techniques have been successfully implemented and demonstrated on a prototype PDD drive.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © Copyright 2015 IEEE - All rights reserved. |
Keywords: | Electric drives; magnetic gear; permanent-magnet (PM) machine; Pseudo Direct Drive (PDD); reduced-order observer; slip; state feedback control; wind turbine |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 07 Dec 2015 16:37 |
Last Modified: | 07 Dec 2015 16:37 |
Published Version: | http://dx.doi.org/10.1109/TIA.2014.2375387 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers (IEEE) |
Refereed: | Yes |
Identification Number: | 10.1109/TIA.2014.2375387 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:92576 |