Performance and Optimization Study of a Novel Compact Permanent-Magnet-Biased Fault Current Limiter

The permanent-magnet-biasing saturated core fault current limiter (PMFCL) is one of the most promising devices to limit the fault current. To improve the biasing ability of permanent-magnets (PMs) and reduce the cost of PMFCL, this paper proposes a novel compact permanent-magnet-biased fault current...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2017-11, Vol.53 (11), p.1-4
Main Authors: Liangliang Wei, Baichao Chen, Jiaxin Yuan, Cuihua Tian, Yongheng Zhong, Xiang Li, Yanhui Gao, Muramatsu, Kazuhiro
Format: Article
Language:English
Subjects:
Biasing ability of permanent magnets (PMs)
Current limiters
Demagnetization
Fault current limiters
Fault currents
Finite element method
Impedance
Limiting
Magnetic circuits
Magnetic cores
Magnetism
Optimization
optimization study
Permanent magnets
permanent-magnet-biasing saturated core fault current limiter (PMFCL)
small-section part
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Summary:The permanent-magnet-biasing saturated core fault current limiter (PMFCL) is one of the most promising devices to limit the fault current. To improve the biasing ability of permanent-magnets (PMs) and reduce the cost of PMFCL, this paper proposes a novel compact permanent-magnet-biased fault current limiter (CPMFCL). The three-limb structure can reduce the size and cost; the optimal small-section structure can improve the biasing ability of PMs and reduce the usage amount of PMs. First, the principle, equivalent magnetic circuit, and small-section optimized structure are introduced. To validate the principle and performance of CPMFCL, various finite element analysis simulation and optimization study are performed in Maxwell-3D. A 220 V/10 A CPMFCL prototype is designed and tested. The simulation and experimental results demonstrate that, compared with traditional PMFCLs, the CPMFCL has the advantages of smaller size, better biasing capacity of PMs, lower possibility of demagnetization, and excellent fault clipping performance.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2017.2715063