An Appraisal of Power-Minimizing Control Algorithms for Active Magnetic Bearings

Active magnetic bearings consume much less power than conventional passive bearings, especially when power-minimizing controllers are employed. Several power-minimizing controllers have been proposed, such as variable bias controllers and switching controllers. In this paper, we present an appraisal...

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Main Authors: Seong-yeol Yoo, Myounggyu D. Noh
Format: Article
Language:English
Published: Hindawi Limited 2015-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2015/238629
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spelling doaj-c7c91a60bc8d495181a42fc7767f18fe2020-11-24T23:02:28ZengHindawi LimitedShock and Vibration1070-96221875-92032015-01-01201510.1155/2015/238629238629An Appraisal of Power-Minimizing Control Algorithms for Active Magnetic BearingsSeong-yeol Yoo0Myounggyu D. Noh1Ocean System Engineering Research Division, Korea Research Institute of Ships & Ocean Engineering, Daejeon 305-343, Republic of KoreaDepartment of Mechatronics Engineering, Chungnam National University, Daejeon 305-764, Republic of KoreaActive magnetic bearings consume much less power than conventional passive bearings, especially when power-minimizing controllers are employed. Several power-minimizing controllers have been proposed, such as variable bias controllers and switching controllers. In this paper, we present an appraisal of the power-minimizing control algorithms for active magnetic bearings in an attempt to provide an objective guideline on the merits of the control algorithms. In order for the appraisal, we develop an unified and consistent model of active magnetic bearing systems. The performances of the power-minimizing controllers are assessed through this model. The results show that the power-minimizing controllers indeed save considerable power when the machine state is relatively steady. However, a simple proportional-derivative type controller is on a par with the much more complex power-minimizing controllers in terms of power consumption when the machine is experiencing transient loads.http://dx.doi.org/10.1155/2015/238629
collection DOAJ
language English
format Article
sources DOAJ
author Seong-yeol Yoo
Myounggyu D. Noh
spellingShingle Seong-yeol Yoo
Myounggyu D. Noh
An Appraisal of Power-Minimizing Control Algorithms for Active Magnetic Bearings
Shock and Vibration
author_facet Seong-yeol Yoo
Myounggyu D. Noh
author_sort Seong-yeol Yoo
title An Appraisal of Power-Minimizing Control Algorithms for Active Magnetic Bearings
title_short An Appraisal of Power-Minimizing Control Algorithms for Active Magnetic Bearings
title_full An Appraisal of Power-Minimizing Control Algorithms for Active Magnetic Bearings
title_fullStr An Appraisal of Power-Minimizing Control Algorithms for Active Magnetic Bearings
title_full_unstemmed An Appraisal of Power-Minimizing Control Algorithms for Active Magnetic Bearings
title_sort appraisal of power-minimizing control algorithms for active magnetic bearings
publisher Hindawi Limited
series Shock and Vibration
issn 1070-9622
1875-9203
publishDate 2015-01-01
description Active magnetic bearings consume much less power than conventional passive bearings, especially when power-minimizing controllers are employed. Several power-minimizing controllers have been proposed, such as variable bias controllers and switching controllers. In this paper, we present an appraisal of the power-minimizing control algorithms for active magnetic bearings in an attempt to provide an objective guideline on the merits of the control algorithms. In order for the appraisal, we develop an unified and consistent model of active magnetic bearing systems. The performances of the power-minimizing controllers are assessed through this model. The results show that the power-minimizing controllers indeed save considerable power when the machine state is relatively steady. However, a simple proportional-derivative type controller is on a par with the much more complex power-minimizing controllers in terms of power consumption when the machine is experiencing transient loads.
url http://dx.doi.org/10.1155/2015/238629
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