On the future sustainable ultra-high-speed maglev: An energy-economical superconducting linear thrusting system

被引：10
|
作者：
Dong, Fangliang [1 ,2 ]
Hao, Luning [3 ]
Park, Dongkeun [1 ]
Iwasa, Yukikazu [1 ]
Huang, Zhen [2 ]
机构：
[1] MIT, Plasma Sci & Fus Ctr, Francis Bitter Magnet Lab, Cambridge, MA 02139 USA
[2] Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Shanghai 200240, Peoples R China
[3] Univ Cambridge, Dept Engn, Elect Engn Div, Cambridge CB3 0FA, England
来源：
ENERGY CONVERSION AND MANAGEMENT | 2023年 / 291卷
基金：
中国国家自然科学基金; 上海市自然科学基金;
关键词：
Energy storage; Energy conversion; Cryogenics; Electric motor; Maglev transportation; Superconductor; SOLID NITROGEN; MAGNET;
D O I：
10.1016/j.enconman.2023.117247
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Along with 1000-km/h magnetically levitated trains (maglevs), an era of future traveling is approaching. With only similar to 1/5 energy consumption per passenger kilometer while achieving a similar speed compared to airplanes, the ultra-high-speed maglevs would change the way the world moves with an on-demand sustainable mass transportation system that connects cities in minutes. Meanwhile, with ever-advancing superconducting technology, the zero-joule-loss magnet in high-density-energy preservation is much improved with strong magnetic field. This consequently enables the energy-efficient but powerful superconducting linear thrusting system - the key part that drives the maglevs to the speed, in an even more energy-friendly way. Here, we take advantage of superconductor, and present successful solutions to two energy bottlenecks regarding energy preservation and conversion unique to this novel thrusting system, that is, 1) on-board feeding power constraint and 2) fieldripple-caused loss, by demonstrating a prototype with two merits: 1) its on-board superconducting propulsive magnet can operate as a standalone system free of any on-board feeding powers for maintaining energizing and cryogenic cooling; 2) the ground propulsive structure can greatly suppress thermal loss during operation. We hope the work could solve energy issues in the future maglev, and prompt the process of transport electrification and decarbonization.
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页数：17
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