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
Computer Science, Information Systems
Wei Chen, Peng Song, Hao Jiang, Jiahui Zhu, Shengnan Zou, Timing Qu
Summary: This study measured the quench recovery time of an HTS tape under different fault current conditions, developed a global heat transfer model to describe the quench recovery characteristic, validated its effectiveness, and discussed the influence of tape properties on the quench recovery time.
Article
Engineering, Electrical & Electronic
Can Peng, Xucheng Zhou, Xuanbo Wang, Ye Hong, Xiaoning Liu, Jun Zheng, Zigang Deng
Summary: This paper presents a novel turnout design for high-temperature superconducting (HTS) maglev systems. By replacing permanent magnets and using switching magnetic poles and attached permanent magnet devices, the switching function of turnouts can be achieved.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2022)
Article
Energy & Fuels
Slawomir Kozak
Summary: The author designed, built, and tested a superconducting fault current limiter (SFCL) for medium voltage networks cooled by a cryocooler. The limiter uses high-temperature second generation superconducting tape and the working temperature can be changed to adjust to electric power needs. Transition from a SFCL to a superconducting surge current limiter (SSCL) system was proposed, showing advantages in reducing operation time and adapting to power industry applications.
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
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
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
Shixian Liu, Lei Wang, Yong Chen, Luzhong Wang, Benzhe Zhou, Xinning Hu, Junsheng Cheng, Qiuliang Wang
Summary: The Institute of Electrical Engineering, Chinese Academy of Sciences has developed a prototype metal-insulation (MI) REBCO high-temperature superconducting (HTS) magnet for use in an electrodynamic suspension (EDS) system with an acceleration of beyond 8 g. A semi-analytical method was used to analyze the dynamic electromagnetic force distribution inside the magnet, and a full-size prototype was successfully fabricated.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2023)
Article
Physics, Fluids & Plasmas
S. Ito, H. Tamura, N. Yanagi, H. Hashizume
Summary: This paper presents the progress in electrical and mechanical performances of the mechanical joints of HTS conductors and methods to evaluate their quality for segment-fabrication of HTS helical coils. R&D of joint performance has progressed over the past decade and it shows acceptable performance for the HTS helical coils. The contact-probing current transfer length method and x-ray computer tomography scanning are promising for quality assessment of the joints and HTS tapes.
Article
Energy & Fuels
Giacomo Russo, Antonio Morandi
Summary: High Temperature Superconducting (HTS) dynamo flux pumps are a promising alternative to metal current leads for energization and the persistent current mode operation of high current DC superconducting magnet systems. This paper evaluates and compares the performance of several commercial HTS tapes used for flux pumping purposes through numerical simulation, and investigates the dependence of the flux pump's performance on the operating temperatures.
Article
Energy & Fuels
Pawel Surdacki, Lukasz Wozniak
Summary: The article presents an extended computer model of an HTS transformer and investigates the application potential of high temperature superconducting tapes in transformer windings. The analysis includes different transient states and examines the effects of electrical and thermal parameters on current limitation.
Article
Engineering, Electrical & Electronic
Fangliang Dong, Dongkeun Park, Junseong Kim, Juan Bascunan, Yukikazu Iwasa
Summary: It is generally agreed that no-insulation high-temperature superconducting magnets do not quench due to the turn-to-turn energy-releasing bypass unique to them. However, unexpected quenches, known as sudden-discharging quenches, can still occur when the current suddenly drops to zero. In this study, a demonstrative coil is used to prove and simulate the dynamics of this type of quench, which is different from the commonly reported quench during charging.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Physics, Applied
Liuyuan Yu, Mengdie Niu, Huadong Yong, Youhe Zhou
Summary: This paper uses a 3D coupled electromagnetic-mechanical model to analyze the electromagnetic and mechanical behaviors of HTS racetrack coils, considering coil deformation and the strain dependence of critical current. The validity of the coupled model is verified by comparing numerical results with experimental data. The influences of various parameters on the electromagnetic and mechanical responses of the HTS racetrack coil are also investigated.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Jinkai Zhang, Zigang Deng, Wen Wang, Wuyang Lei, Yuhang Yuan, Zhehao Liu, Gaowei Zhang, Jun Zheng
Summary: The new HTS maglev vehicle called KENYON was successfully developed in December 2019, capable of carrying 8 passengers. It adopted the bogie structure of independent running gear, which improved curve passing performance. Experimental research on optimizing curve passing ability in small radius curves was conducted, showing that small wheelbase and centripetal arrangement were beneficial for improving the vehicle's performance.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2021)
