Article
Engineering, Electrical & Electronic
Xiyuan Teng, Zhen Huang, Fangliang Dong, Xiaoyong Xu, Zhijian Jin, Yu Shi, Anfeng Zhao, Xianzhen Yuan, Yaoxin Feng
Summary: The research focuses on designing high-temperature superconducting coils for use in linear synchronous motors, utilizing their high current density and increased operating temperature, with potential applications in magnetically levitated maglev trains. Through design optimization, the coils can be applied in linear propulsion systems, with their performance verified through experiments and simulations.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2021)
Article
Physics, Applied
Tabea Arndt, Bernhard Holzapfel, Mathias Noe, Rainer Nast, Frank Hornung, Marion Klaeser, Andrej Kudymow
Summary: The study introduces a scalable concept for preparing high current density windings with high-temperature superconducting material, which is based on a circular disk-up-down-assembly principle. First measurements in liquid nitrogen validate the mechanism, showing potential for lower contact resistance, improved current and field performance, and the ability to achieve large winding heights due to structural homogeneity.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Zhen Huang, Fangliang Dong, Xiaoyong Xu, Xiyuan Teng, Wei Ren, Junjie Zhang, Wan Li, Guangtong Ma, Zhijian Jin
Summary: The development of superconducting magnetically levitated trains has advanced rapidly in recent years, focusing on the design and optimization of high-temperature superconducting magnet systems for improved performance. The ground propulsion system of these trains is a key area of research, with a focus on balancing propulsive and normal forces as well as addressing thermal load issues. Double-layer short-pitch winding has been proposed as a solution for the high-temperature superconducting linear synchronous motor.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2021)
Article
Engineering, Electrical & Electronic
Boyang Shen, Mingshun Zhang, Lin Fu, Tim A. Coombs, Xiaoyuan Chen
Summary: This article presents a novel all-superconducting propulsion and protection system for high-temperature superconducting (HTS) Maglev trains, introducing superconducting fault current limiter and superconducting magnetic energy storage to protect the HTS magnet and ensure the safety and reliability of Maglev operation. The feasibility of the scaled all-superconducting protection and energy compensation system was verified through modeling and experiments.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2021)
Article
Engineering, Electrical & Electronic
Zhihao Wu, Jianxun Jin, Boyang Shen, Luning Hao, Youguang Guo, Jianguo Zhu
Summary: This article presents the fundamental design and modeling of a superconducting magnet for a high-speed maglev train using high-temperature superconductors. The design and modeling were verified through experimental tests and further investigation using a professional model based on the finite element method. The study focuses on understanding and analyzing the electromagnetic performance and physical phenomena of the high-temperature superconductor magnet.
Article
Physics, Applied
Alexandre Zampa, Christian Lacroix, Arnaud Badel, Frederic Sirois, Pascal Tixador
Summary: This study investigates the impact of inhomogeneous temperature elevations, or hot spots, in second generation high-temperature superconductor tapes. The researchers observed inhomogeneous heat generation in commercial bare tapes and studied current redistribution around a dissipative zone. Numerical simulations were used to reproduce the behaviors observed and explore the effects of lacking silver on quench dynamics.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Yicheng Feng, Jun Zheng, Zigang Deng, Wuyang Lei, Zili Wang
Summary: A double-layer double quasi-Halbach guideway has been designed to reduce dependence on rare-earth materials and lower costs. It utilizes 35% less NdFeB than traditional guideways and maintains comparable levitation and guidance capabilities.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
Xucheng Zhou, Haitao Li, Li Wang, Can Peng, Shan Wang, Le Liang, Zigang Deng
Summary: In this article, a coreless-typed permanent magnet linear synchronous motor (PMLSM) is designed for the high-temperature superconducting (HTS) pinning maglev driving system. The driving force and normal force characteristics of the motor under different air gaps are calculated, and a vertical dynamic model of the HTS pinning maglev vehicle is established. The vertical dynamic response of the vehicle is simulated and analyzed considering the normal force of PMLSM and irregularity of the permanent magnet guideway (PMG).
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2023)
Article
Engineering, Electrical & Electronic
Zigang Deng, Weihua Zhang, Long Kou, Yanxing Cheng, Huan Huang, Li Wang, Jinxiong Chen, Zhihao Ke, Qiwen Ma
Summary: This paper introduces the development of an ultra-high-speed maglev test rig, which includes key components and design standards. It is significant for the research and development of HTS maglev technology and permanent magnet EDL technology.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2021)
Article
Physics, Applied
Nathaly Castaneda, Goran Majkic, Francisco C. Robles
Summary: The study demonstrates that scanning Raman spectroscopy has the potential to be utilized as a fast, insightful, and reliable characterization, quality, and process control technique for both coated conductors (CC) optimization and increasing manufacturing yield.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Yi Luo, Yuhang Yuan, Peiyang Zeng, Bin Deng, Zigang Deng
Summary: This article presents a measurement method for evaluating the irregularity of the permanent magnet guideway (PMG) in a high-temperature superconducting (HTS) pinning maglev system. Various sensors are used to measure the magnetic induction intensity, vibration response, and geometric signal of the PMG. The obtained irregularity power spectrum can provide a reference for the dynamic simulation of HTS pinning maglev.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Engineering, Electrical & Electronic
V. A. S. Muralidhar Bathula, D. K. Sharma, U. K. Choudhury, V. V. Rao
Summary: High temperature superconducting (HTS) synchronous machines are compact and light weight machines with higher torque to weight ratio, lower noise and better dynamic response, but face challenges in HTS field coil technology. Replacing 1G HTS field coils with 2G HTS field coils has the potential to significantly increase machine output capacity.
JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Tomoyuki Koga, Ryuya Ando, Hiroyuki Watanabe, Shotaro Nakajima, Tomoo Chiba
Summary: A test cryostat with a conduction-cooled MgB2 superconducting bias magnet has been developed and demonstrated, which is more environmentally friendly and user-friendly compared to conventional cryostats. The consumption of liquid helium is reduced by almost half due to the self-cooling feature of the MgB2 magnet. The ramp-up rate of the bias magnet has also been significantly improved to 1 A/s, making it almost 10 times faster than previous NbTi magnets.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Physics, Applied
Jose Luis Rudeiros Fernandez, Paolo Ferracin
Summary: This paper presents a novel geometrical configuration called the uni-layer (UL) magnet, which uses an asymmetric current distribution to create a magnetic field perpendicular to an aperture within a single layer using a continuous ideal current line. The UL magnet design has advantages over existing concepts in superconducting magnets such as the cos sector magnet, stress managed cos, and canted cos, including a continuous unit length design and an increased minimum bending radius. The UL magnet design is particularly advantageous for high-temperature superconductors sensitive to strain and prone to winding degradation in high-field accelerator magnet applications requiring high efficiency and a small aperture. The paper also discusses the advantages of UL magnets in terms of design and fabrication compared to other concepts.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2023)
Article
Physics, Applied
Jael Giguere, Christian Lacroix, Felix Dupuis-Desloges, Jean-Hughes Fournier-Lupien, Frederic Sirois
Summary: Copper-stabilized second generation high-temperature superconductor coated conductors were modified to enhance their normal zone propagation velocity. A novel tape architecture called hybrid-current flow diverter was investigated to increase the current transfer length for enhancing the normal zone propagation velocity.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Physics, Applied
Katsutoshi Mizuno, Masafumi Ogata, Hitoshi Hasegawa
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
(2015)
Article
Engineering, Electrical & Electronic
Katsutoshi Mizuno, Motohiko Sugino, Minoru Tanaka, Masafumi Ogata
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2017)
Article
Engineering, Electrical & Electronic
Katsutoshi Mizuno, Minoru Tanaka, Masafumi Ogata, Tetsuji Okamura
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2018)
Article
Thermodynamics
Katsutoshi Mizuno, Yoshiki Miyazaki, Ken Nagashima, Asumi Kawano, Tetsuji Okamura
Article
Physics, Applied
Katsutoshi Mizuno, Masafumi Ogata, Hitoshi Hasegawa
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
(2014)