LAPSE:2019.0366
Published Article
LAPSE:2019.0366
Design, Modeling and Control of Magnetic Bearings for a Ring-Type Flywheel Energy Storage System
Chow-Shing Toh, Shyh-Leh Chen
February 27, 2019
This study is concerned with the magnetic force models of magnetic bearing in a flywheel energy storage system (FESS). The magnetic bearing is of hybrid type, with axial passive magnetic bearing (PMB) and radial hybrid magnetic bearing (HMB). For the PMB, a pair of ring-type Halbach arrays of permanent magnets are arranged vertically to support the rotor weight. For the HMB, a set of ring-type Halbach array is placed on the rotor side, which corresponds to coil sets on the stator side. The HMB can produce both attraction and repulsion forces on the radial direction, depending on the direction of the coil currents. It is found that the ring-type configuration and the differential winding scheme for coil sets can yield linear magnetic force models for both PMB and HMB. Based on the obtained magnetic force model, an integral sliding mode controller is designed for the stable rotor levitation in the radial direction. The experimental results show that the rotor can be stabilized to the bearing center, verifying the accuracy of the magnetic force models and effectiveness of the levitation controller.
Keywords
flywheel battery, Halbach array, magnetic bearing, nonlinear control
Suggested Citation
Toh CS, Chen SL. Design, Modeling and Control of Magnetic Bearings for a Ring-Type Flywheel Energy Storage System. (2019). LAPSE:2019.0366
Author Affiliations
Toh CS: Department of Mechanical Engineering and Advanced Institute of Manufacturing with High-Tech Innovations, Chiayi 62102, Taiwan
Chen SL: Department of Mechanical Engineering and Advanced Institute of Manufacturing with High-Tech Innovations, Chiayi 62102, Taiwan
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Journal Name
Energies
Volume
9
Issue
12
Article Number
E1051
Year
2016
Publication Date
2016-12-14
Published Version
ISSN
1996-1073
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Original Submission
Other Meta
PII: en9121051, Publication Type: Journal Article
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LAPSE:2019.0366
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doi:10.3390/en9121051
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Feb 27, 2019
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CC BY 4.0
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[v1] (Original Submission)
Feb 27, 2019
 
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Feb 27, 2019
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Original Submitter
Calvin Tsay
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