NDLI: Slip recovery and prevention in Pseudo Direct Drive permanent magnet machines

Content Provider	IEEE Xplore Digital Library
Author	Bouheraoua, M. Jiabin Wang Atallah, K.
Copyright Year	2013
Description	Author affiliation: Control Syst. Magnomatics Ltd., Sheffield, UK (Bouheraoua, M.) \|\| Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK (Jiabin Wang; Atallah, K.)
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, incorrect commutation signal and/or loss of load speed/position control. This paper proposes a technique to control slip caused by external overload torques and enable a swift recovery when these are removed for a PDD equipped with a position/speed sensor on each rotor. However, when the PDD is equipped with only one sensor on the high-speed rotor, 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.
Starting Page	2162
Ending Page	2169
File Size	1023668
Page Count	8
File Format	PDF
ISBN	9781479903368
DOI	10.1109/ECCE.2013.6646974
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Damping Torque Reduced order observer Magnetomechanical effects Rotors Slip Observers Pseudo Direct Drive State Feedback Control Oscillators Electric Drives PDD Gears Wind Turbine Permanent Magnet Machine Magnetic Gear
Content Type	Text
Resource Type	Article

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