Progress in Superconductivity and Cryogenics最新文献_第9页

Addition effects of nanoscale NiO on microstructure and superconducting properties of MgB 2 纳米NiO对mgb2微观结构和超导性能的影响

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Progress in Superconductivity and Cryogenics Pub Date : 2016-03-31 DOI: 10.9714/PSAC.2016.18.1.037

M. Ranot, S. H. Jang, Y. Oh, K. Shinde, Seong-Hoon Kang, K. Chung

引用次数: 5

Development of superconducting high gradient magnetic separation system for scale removal from feed-water in thermal power plant 火电厂给水除垢超导高梯度磁选系统的研制

IF 0.3

Progress in Superconductivity and Cryogenics Pub Date : 2016-03-31 DOI: 10.9714/psac.2016.18.1.019

Saori Shibatani, Motohiro Nakanishi, Nobumi Mizuno, F. Mishima, Y. Akiyama, H. Okada, N. Hirota, H. Matsuura, T. Maeda, N. Shigemoto, S. Nishijima

引用次数: 1

Past and ongoing researches for magnetic force control technology 磁力控制技术过去和正在进行的研究

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Progress in Superconductivity and Cryogenics Pub Date : 2016-03-31 DOI: 10.9714/PSAC.2016.18.1.023

T. Mori, S. Nishijima

引用次数: 1

Analysis of transmission efficiency of the superconducting resonance coil according the materials of cooling system 根据冷却系统材料对超导共振线圈的传输效率进行了分析

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Progress in Superconductivity and Cryogenics Pub Date : 2016-03-31 DOI: 10.9714/PSAC.2016.18.1.046

Yu-kyeong Lee, Junwon Hwang, Hyosang Choi

{"title":"Analysis of transmission efficiency of the superconducting resonance coil according the materials of cooling system","authors":"Yu-kyeong Lee, Junwon Hwang, Hyosang Choi","doi":"10.9714/PSAC.2016.18.1.046","DOIUrl":"https://doi.org/10.9714/PSAC.2016.18.1.046","url":null,"abstract":"The wireless power transfer (WPT) system using a magnetic resonance was based on magnetic resonance coupling of the transmission and the receiver coils. In these system, it is important to maintain a high quality-factor (Q-factor) to increase the transmission efficiency of WPT system. Our research team used a superconducting coil to increase the Q-factor of the magnetic resonance coil in WPT system. When the superconductor is applied in these system, we confirmed that transmission efficiency of WPT system was higher than normal conductor coil through a preceding study. The efficiency of the transmission and the receiver coil is affected by the magnetic shielding effect of materials around the coils. The magnetic shielding effect is dependent on the type, thickness, frequency, distance, shape of materials. Therefore, it is necessary to study the WPT system on the basis of these conditions. In this paper, the magnetic shield properties of the cooling system were analyzed using the High-Frequency Structure Simulation (HFSS, Ansys) program. We have used the shielding materials such as plastic, aluminum and iron, etc. As a result, when we applied the fiber reinforced polymer (FRP), the transmission efficiency of WPT was not affected because electromagnetic waves went through the FRP. On the other hand, in case of a iron and aluminum, transmission efficiency was decreased because of their electromagnetic shielding effect. Based on these results, the research to improve the transmission efficiency and reliability of WPT system is continuously necessary.","PeriodicalId":20758,"journal":{"name":"Progress in Superconductivity and Cryogenics","volume":"18 1","pages":"46-49"},"PeriodicalIF":0.3,"publicationDate":"2016-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71376607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hybrid design method for air-core solenoid with axial homogeneity 具有轴向均匀性的空芯螺线管混合设计方法

IF 0.3

Progress in Superconductivity and Cryogenics Pub Date : 2016-03-31 DOI: 10.9714/PSAC.2016.18.1.050

Li Huang, Sangjin Lee, Sukjin Choi

{"title":"Hybrid design method for air-core solenoid with axial homogeneity","authors":"Li Huang, Sangjin Lee, Sukjin Choi","doi":"10.9714/PSAC.2016.18.1.050","DOIUrl":"https://doi.org/10.9714/PSAC.2016.18.1.050","url":null,"abstract":"In this paper, a hybrid method is proposed to design an air-core superconducting solenoid system for 6 T axial uniform magnetic field using Niobium Titanium (NbTi) superconducting wire. In order to minimize the volume of conductor, the hybrid optimization method including a linear programming and a nonlinear programming was adopted. The feasible space of solenoid is divided by several grids and the magnetic field at target point is approximated by the sum of magnetic field generated by an ideal current loop at the center of each grid. Using the linear programming, a global optimal current distribution in the feasible space can be indicated by non-zero current grids. Furthermore the clusters of the non-zero current grids also give the information of probable solenoids in the feasible space, such as the number, the shape, and so on. Applying these probable solenoids as the initial model, the final practical configuration of solenoids with integer layers can be obtained by the nonlinear programming. The design result illustrates the efficiency and the flexibility of the hybrid method. And this method can also be used for the magnet design which is required the high homogeneity within several ppm (parts per million).","PeriodicalId":20758,"journal":{"name":"Progress in Superconductivity and Cryogenics","volume":"18 1","pages":"50-54"},"PeriodicalIF":0.3,"publicationDate":"2016-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71376205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The history of IFMFC - The accumulated knowledge and experience of the magnetic force control with IFMFC IFMFC的历史-积累的知识和经验的磁力控制与IFMFC

IF 0.3

Progress in Superconductivity and Cryogenics Pub Date : 2016-03-31 DOI: 10.9714/PSAC.2016.18.1.006

Tsuneo Watanabe

引用次数: 0

Study on quench detection of the KSTAR CS coil with CDA+MIK compensation of inductive voltages 电感电压CDA+MIK补偿的KSTAR CS线圈猝灭检测研究

IF 0.3

Progress in Superconductivity and Cryogenics Pub Date : 2016-03-31 DOI: 10.9714/PSAC.2016.18.1.055

S. An, Jinsub Kim, T. Ko, Y. Chu

引用次数: 2

Design of partial emission type liquid nitrogen pump 部分排放式液氮泵的设计

IF 0.3

Progress in Superconductivity and Cryogenics Pub Date : 2016-03-31 DOI: 10.9714/PSAC.2016.18.1.064

Jin-woo Lee, Yonghyun Kwon, C. Lee, Jungwon Choi, Seokho Kim

{"title":"Design of partial emission type liquid nitrogen pump","authors":"Jin-woo Lee, Yonghyun Kwon, C. Lee, Jungwon Choi, Seokho Kim","doi":"10.9714/PSAC.2016.18.1.064","DOIUrl":"https://doi.org/10.9714/PSAC.2016.18.1.064","url":null,"abstract":"High Temperature Superconductor power cable systems are being developed actively to solve the problem of increasing power demand. With increases in the unit length of the High Temperature Superconductor power cable, it is necessary to develop highly efficient and reliable cryogenic pumps to transport the coolant over long distances. Generally, to obtain a high degree of efficiency, the cryogenic pump requires a high pressure rise with a low flow rate, and a partial emission type pump is appropriate considering its low specific speed, which is different from the conventional centrifugal type, full emission type. This paper describes the design of a partial emission pump to circulate subcooled liquid nitrogen. It consists of an impeller, a circular case and a diffuser. The conventional pump and the partial emission pump have different features in the impeller and the discharge flow passage. The partial emission pump uses an impeller with straight radial blades. The emission of working fluid does not occur continuously from all of the impeller channels, and the diffuser allows the flow only from a part of the impeller channels. As the area of the diffuser increases gradually, it converts the dynamic pressure into static pressure while minimizing the loss of total pressure. We used the known numerical method for the optimum design process and made a CFD analysis to verify the theoretical performance.","PeriodicalId":20758,"journal":{"name":"Progress in Superconductivity and Cryogenics","volume":"18 1","pages":"64-68"},"PeriodicalIF":0.3,"publicationDate":"2016-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71376219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Performance and analysis of wireless power charging system from room temperature to HTS magnet via strong resonance coupling method 基于强共振耦合的室温至高温磁体无线充电系统性能分析

IF 0.3

Progress in Superconductivity and Cryogenics Pub Date : 2016-03-31 DOI: 10.9714/PSAC.2016.18.1.041

Y. Chung, C. Lee, S. Y. Lee, T. Lee, Jinseok Kim

{"title":"Performance and analysis of wireless power charging system from room temperature to HTS magnet via strong resonance coupling method","authors":"Y. Chung, C. Lee, S. Y. Lee, T. Lee, Jinseok Kim","doi":"10.9714/PSAC.2016.18.1.041","DOIUrl":"https://doi.org/10.9714/PSAC.2016.18.1.041","url":null,"abstract":"The technology of supplying the electric power by wireless power transfer (WPT) is expected for the next generation power feeding system since it can supply the power to portable devices without any connectors through large air gap. As such a technology based on strongly coupled electromagnetic resonators is possible to deliver the large power and recharge them seamlessly; it has been considered as a noble option to wireless power charging system in the various power applications. Recently, various HTS wires have now been manufactured for demonstrations of transmission cables, motors, MAGLEV, and other electrical power components. However, since the HTS magnets have a lower index n value intrinsically, they are required to be charged from external power system through leads or internal power system. The portable area is limited as well as the cryogen system is bulkier. Thus, we proposed a novel design of wireless power charging system for superconducting HTS magnet (WPC4SM) based on resonance coupling method. As the novel system makes possible a wireless power charging using copper resonance coupled coils, it enables to portable charging conveniently in the superconducting applications. This paper presented the conceptual design and operating characteristics of WPC4SM using different shapes' copper resonance coil. The proposed system consists of four","PeriodicalId":20758,"journal":{"name":"Progress in Superconductivity and Cryogenics","volume":"18 1","pages":"41-45"},"PeriodicalIF":0.3,"publicationDate":"2016-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71376603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quench analysis and protection circuit design of a superconducting magnet system for RISP 28GHz ECR ion source RISP 28GHz ECR离子源超导磁体系统的失稳分析与保护电路设计

IF 0.3

Progress in Superconductivity and Cryogenics Pub Date : 2016-01-01 DOI: 10.9714/PSAC.2016.18.2.037

Seunghyun Song, T. Ko, S. Choi, M. Ahn

引用次数: 0