Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/624771
Title: Characteristics Comparison Between HTS Air Core and Partial Core Transformers
Authors: Daoyu Hu;Jie Sheng;Zhuyong Li;Zhibin Jing;Qi Guo;Zhiyong Hong;Zhijian Jin;K. Ryu;H. S. Yang
subject: transformer|Air core|partial core|field-circuit coupled|HTS|characteristics
Year: 2016
Publisher: IEEE
Abstract: This paper presents the characteristics comparison between an HTS air-core transformer (ACT) and an HTS partial-core transformer (PCT) by experiment and simulation. Two types of transformers were fabricated and tested in liquid nitrogen at 77 K. Fundamental characteristics were obtained by no-load, load, and short-circuit tests. The parameters of the equivalent circuits of the two transformers were also obtained. A field-circuit finite-element method was proposed to analyze the electrical characteristics. In addition, the experimental results were compared with the numerically calculated ones. The results show that the measured critical currents of the transformer with and without the iron core are nearly the same. The measured exciting current and percent voltage regulation of the PCT is smaller than that of the ACT. The PCT has a better short-circuit current limiting function. The numerical results show that the uneven degree of circulating current of ACT is larger than that of the PCT. The loss characteristic was also discussed in this paper.
URI: http://localhost/handle/Hannan/161030
http://localhost/handle/Hannan/624771
ISSN: 1051-8223
1558-2515
volume: 26
issue: 7
Appears in Collections:2016

Files in This Item:
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Title: Characteristics Comparison Between HTS Air Core and Partial Core Transformers
Authors: Daoyu Hu;Jie Sheng;Zhuyong Li;Zhibin Jing;Qi Guo;Zhiyong Hong;Zhijian Jin;K. Ryu;H. S. Yang
subject: transformer|Air core|partial core|field-circuit coupled|HTS|characteristics
Year: 2016
Publisher: IEEE
Abstract: This paper presents the characteristics comparison between an HTS air-core transformer (ACT) and an HTS partial-core transformer (PCT) by experiment and simulation. Two types of transformers were fabricated and tested in liquid nitrogen at 77 K. Fundamental characteristics were obtained by no-load, load, and short-circuit tests. The parameters of the equivalent circuits of the two transformers were also obtained. A field-circuit finite-element method was proposed to analyze the electrical characteristics. In addition, the experimental results were compared with the numerically calculated ones. The results show that the measured critical currents of the transformer with and without the iron core are nearly the same. The measured exciting current and percent voltage regulation of the PCT is smaller than that of the ACT. The PCT has a better short-circuit current limiting function. The numerical results show that the uneven degree of circulating current of ACT is larger than that of the PCT. The loss characteristic was also discussed in this paper.
URI: http://localhost/handle/Hannan/161030
http://localhost/handle/Hannan/624771
ISSN: 1051-8223
1558-2515
volume: 26
issue: 7
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7496977.pdf1.03 MBAdobe PDFThumbnail
Preview File
Title: Characteristics Comparison Between HTS Air Core and Partial Core Transformers
Authors: Daoyu Hu;Jie Sheng;Zhuyong Li;Zhibin Jing;Qi Guo;Zhiyong Hong;Zhijian Jin;K. Ryu;H. S. Yang
subject: transformer|Air core|partial core|field-circuit coupled|HTS|characteristics
Year: 2016
Publisher: IEEE
Abstract: This paper presents the characteristics comparison between an HTS air-core transformer (ACT) and an HTS partial-core transformer (PCT) by experiment and simulation. Two types of transformers were fabricated and tested in liquid nitrogen at 77 K. Fundamental characteristics were obtained by no-load, load, and short-circuit tests. The parameters of the equivalent circuits of the two transformers were also obtained. A field-circuit finite-element method was proposed to analyze the electrical characteristics. In addition, the experimental results were compared with the numerically calculated ones. The results show that the measured critical currents of the transformer with and without the iron core are nearly the same. The measured exciting current and percent voltage regulation of the PCT is smaller than that of the ACT. The PCT has a better short-circuit current limiting function. The numerical results show that the uneven degree of circulating current of ACT is larger than that of the PCT. The loss characteristic was also discussed in this paper.
URI: http://localhost/handle/Hannan/161030
http://localhost/handle/Hannan/624771
ISSN: 1051-8223
1558-2515
volume: 26
issue: 7
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7496977.pdf1.03 MBAdobe PDFThumbnail
Preview File