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2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)最新文献

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A 3-D magnetic equivalent circuit of an axial-flux MEMS micromotor 轴向磁通MEMS微电机的三维磁等效电路
2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD) Pub Date : 2015-11-01 DOI: 10.1109/ASEMD.2015.7453634
Xiaofeng Ding, Guanliang Liu, Hong Guo, Hua Bai
{"title":"A 3-D magnetic equivalent circuit of an axial-flux MEMS micromotor","authors":"Xiaofeng Ding, Guanliang Liu, Hong Guo, Hua Bai","doi":"10.1109/ASEMD.2015.7453634","DOIUrl":"https://doi.org/10.1109/ASEMD.2015.7453634","url":null,"abstract":"This paper presents a novel axial-flux microelectromechanical systems (MEMS) based micromotor with dual-rotor and 10mm diameter. The characteristics of MEMS micromotor are analyzed and modeled using a 3-D magnetic equivalent circuit (MEC) taking the leakage fluxes and fringing effect into account. Such methodology yields more accurate prediction of the flux distribution inside the machine, back electromotive force (EMF) waveform and the torque. The key point of the analytical model is to compute the magnetic flux density in the air gap generated by the permanent magnet. An accurate prediction method of the leakage fluxes based on an improved pigeon-inspired optimization (PIO) algorithm is proposed in this paper. The feasibility of the proposed method is validated by the 3-D finite element analysis (FEA). Finally, the method is applied to design and manufacture the micromotor.","PeriodicalId":159493,"journal":{"name":"2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114993328","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: 3
Design of photovoltaic fan drive based on MPPT 基于MPPT的光伏风机驱动设计
2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD) Pub Date : 2015-11-01 DOI: 10.1109/ASEMD.2015.7453453
Yu Zhang, Y. Wei, Z. Yang, Tao Liu, Yi Mou, Dong Chen
{"title":"Design of photovoltaic fan drive based on MPPT","authors":"Yu Zhang, Y. Wei, Z. Yang, Tao Liu, Yi Mou, Dong Chen","doi":"10.1109/ASEMD.2015.7453453","DOIUrl":"https://doi.org/10.1109/ASEMD.2015.7453453","url":null,"abstract":"The exploitation and utilization of solar energy has been paled more attention because of large reserves, economic, cleanliness and so on as a new kind of energy. Photovoltaic power system is a kind of new power generation system which makes use of the photovoltaic effect of the semiconductor materials of the solar cell and converts solar radiation into electricity. This design presents a photovoltaic power system which performs maximum power point tracking, battery charging and converter with stable voltage.","PeriodicalId":159493,"journal":{"name":"2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127180713","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
Helium boil-off experiments for a superconducting magnet cryostat with pulse tube cryocooler 带脉管制冷机的超导磁体低温恒温器氦沸腾实验
2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD) Pub Date : 2015-11-01 DOI: 10.1109/ASEMD.2015.7453637
Kun Chang, Q. L. Wang, B. Zhao, Shunzhong Chen
{"title":"Helium boil-off experiments for a superconducting magnet cryostat with pulse tube cryocooler","authors":"Kun Chang, Q. L. Wang, B. Zhao, Shunzhong Chen","doi":"10.1109/ASEMD.2015.7453637","DOIUrl":"https://doi.org/10.1109/ASEMD.2015.7453637","url":null,"abstract":"Recent helium re-condensing technology has been widely applied in the field of superconducting magnet. The pulse tube (PT) cryocoolers have achieved great application for its advantage of no moving parts in the cold end, high reliability, low vibration and noise. In our study, a two-stage PT cryocooler is employed to provide the cooling power for a nuclear magnetic resonance (NMR) superconducting magnet cryostat. In our tests, it has been shown that the superconducting magnet cryostat can realize a zero liquid helium boil-off during static operation. To obtain the liquid helium boil-off losses when the cryocooler is stopped, the cryocooler is shut down for seven hours continuously. The liquid helium evaporation rate test results show that the volume of liquid helium decreases from 63.6% to 56.3%, and the liquid helium evaporation rate is 0.83 L/h approximately. Based on the test results, the liquid helium will wholly evaporate in several days for similar superconducting magnet system even when the liquid helium cryostat is refilled.","PeriodicalId":159493,"journal":{"name":"2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125939169","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
Thermal stability of a quasi-isotropic strand consisting of coated conductors 由涂层导体组成的准各向同性链的热稳定性
2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD) Pub Date : 2015-11-01 DOI: 10.1109/ASEMD.2015.7453681
T. Li, Y. S. Wang, Hui Xian Zhang
{"title":"Thermal stability of a quasi-isotropic strand consisting of coated conductors","authors":"T. Li, Y. S. Wang, Hui Xian Zhang","doi":"10.1109/ASEMD.2015.7453681","DOIUrl":"https://doi.org/10.1109/ASEMD.2015.7453681","url":null,"abstract":"This paper presents the thermal stability of a quasi-isotropic strand composed of stacked high temperature superconducting coated conductors (CC). The strand was sheathed by metal copper and the internal void was filled by aluminum. The quench characteristics of the strand, including the minimum quench energy (MQE) and the quench propagation velocity (QPV), were simulated by software Comsol 5.0. Then the corresponding stability tests were performed in 77 K The thermal disturbance was generated in the strand interior by applying an external direct current (DC) magnetic field. It is shown that the experimental results are in agreement with the simulated ones.","PeriodicalId":159493,"journal":{"name":"2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126127517","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
Numerical analysis of three-phase CSR of TCT type TCT型三相CSR数值分析
2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD) Pub Date : 2015-11-01 DOI: 10.1109/ASEMD.2015.7453630
Guang Yang, Lin Li, X. Zhang
{"title":"Numerical analysis of three-phase CSR of TCT type","authors":"Guang Yang, Lin Li, X. Zhang","doi":"10.1109/ASEMD.2015.7453630","DOIUrl":"https://doi.org/10.1109/ASEMD.2015.7453630","url":null,"abstract":"In this paper, the electric circuit model and the magnetic circuit model of two different configurations of three-phase controlled shunt reactors (CSRs) of thyristor controlled transformer (TCT) are presented. Numerical analysis of the coupled models is made in time domain. Calculated results of two different configurations of three-phase CSRs of TCT type are compared with each other.","PeriodicalId":159493,"journal":{"name":"2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123590878","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
Design and calculation of planar eddy current coil in coin identification 硬币识别中平面涡流线圈的设计与计算
2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD) Pub Date : 2015-11-01 DOI: 10.1109/asemd.2015.7453615
N. Zhang, Shu Hong Wang, Song Wang, Shuang Wang, J. Cao
{"title":"Design and calculation of planar eddy current coil in coin identification","authors":"N. Zhang, Shu Hong Wang, Song Wang, Shuang Wang, J. Cao","doi":"10.1109/asemd.2015.7453615","DOIUrl":"https://doi.org/10.1109/asemd.2015.7453615","url":null,"abstract":"It is important to optimize the parameters of the eddy current coil in order to improve the accuracy of coin identification. In this paper, a new planar eddy current excitation coil and an array of planer eddy current receiver coil were proposed. A simulation model was developed to validate the performance of new planar eddy current coil system. It is showed that the proposed coil system has better accuracy than single coil identification system. The efficiency of the identification is 1800 pcs/minute and the recognition rate of the proposed system can reach up to 99%.","PeriodicalId":159493,"journal":{"name":"2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123772854","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
Equivalent magnetic circuit model of novel disk transverse-flux segment-stator permanent magnet brushless machine 新型圆盘横磁段定子永磁无刷电机等效磁路模型
2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD) Pub Date : 2015-11-01 DOI: 10.1109/ASEMD.2015.7453475
Yanliang Xu, Binglin Lu, Xiao Gong
{"title":"Equivalent magnetic circuit model of novel disk transverse-flux segment-stator permanent magnet brushless machine","authors":"Yanliang Xu, Binglin Lu, Xiao Gong","doi":"10.1109/ASEMD.2015.7453475","DOIUrl":"https://doi.org/10.1109/ASEMD.2015.7453475","url":null,"abstract":"The network-varying equivalent magnetic circuit model for a novel disk transverse-flux segment-stator permanent magnet brushless machines (DTPMSM) is established, by which the phase linkage and the performance can be easily acquired without solving the equation set corresponding to the node magnetic potential. Both 3D-FEM analysis and the prototype experiment are performed to verify the presented magnetic circuit model successfully.","PeriodicalId":159493,"journal":{"name":"2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123793313","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
Study on quantitative pulse magnetization of NdFeB 钕铁硼定量脉冲磁化研究
2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD) Pub Date : 2015-11-01 DOI: 10.1109/ASEMD.2015.7453628
Zhi Hua Chen, Junquan Chen, S. Cheng, Youxing Xiong, Kun Wei
{"title":"Study on quantitative pulse magnetization of NdFeB","authors":"Zhi Hua Chen, Junquan Chen, S. Cheng, Youxing Xiong, Kun Wei","doi":"10.1109/ASEMD.2015.7453628","DOIUrl":"https://doi.org/10.1109/ASEMD.2015.7453628","url":null,"abstract":"Demagnetization may occur in permanent magnet(PM) motors, remagnetization is needed to recover its magnetic power. In this paper, pulse magnetizing process of sintered NdFeB magnet has been studied. Combining with calculated electromagnetic field distribution by Maxwell 3D FEM software, critical magnetic field to saturate the sintered NdFeB magnet is determined through experiment. Preliminary result shows that pulse magnetic field needed to saturate NdFeB magnet has something to do with its historic magnetization process. Furthermore, once the saturated NdFeB magnet is demagnetized, it will be much harder to resaturate the NdFeB than initial saturation.","PeriodicalId":159493,"journal":{"name":"2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115259245","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
Analysis of the thermal stability of a quasi-isotropic strand made from ReBCO tapes ReBCO带制准各向同性链的热稳定性分析
2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD) Pub Date : 2015-11-01 DOI: 10.1109/ASEMD.2015.7453535
T. Li, Y. S. Wang
{"title":"Analysis of the thermal stability of a quasi-isotropic strand made from ReBCO tapes","authors":"T. Li, Y. S. Wang","doi":"10.1109/ASEMD.2015.7453535","DOIUrl":"https://doi.org/10.1109/ASEMD.2015.7453535","url":null,"abstract":"This paper mainly presents the thermal stability of a quasi-isotropic strand composed of stacked high temperature superconducting coated conductors (CC). The strand was sheathed by different kinds of metal such as copper and aluminum. The quench characteristics of the strand, including the minimum quench energy (MQE) and the quench propagation velocity (QPV), were simulated by software Comsol5.0. The simulated results show that the thermal stability of strands with copper sheath is higher than that one with aluminum sheath.","PeriodicalId":159493,"journal":{"name":"2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116572338","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
The influence of the YBCO tape arrangement and gap between the two tapes on AC losses 研究了YBCO带的排列方式和带间间隙对交流损耗的影响
2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD) Pub Date : 2015-11-01 DOI: 10.1109/ASEMD.2015.7453537
Zhensheng Wu, Y. Xue, Jin Fang, Y. J. Huo, Duxing Chen, Lu Yin
{"title":"The influence of the YBCO tape arrangement and gap between the two tapes on AC losses","authors":"Zhensheng Wu, Y. Xue, Jin Fang, Y. J. Huo, Duxing Chen, Lu Yin","doi":"10.1109/ASEMD.2015.7453537","DOIUrl":"https://doi.org/10.1109/ASEMD.2015.7453537","url":null,"abstract":"This paper focuses on the influence of the gaps between two YBCO tapes which were set parallel to each other in the vertical plane and the horizontal plane on AC losses. Since one tape was in the magnetic field which was induced by another tape, the different tape arrangements and gaps between the tapes could influence magnetic field so that AC losses were also influenced. Via the 2 two-dimensional models' establishment, calculation, simulation and analysis, the changes in the AC losses with the gaps could well be understood. Besides, we have established the experimental platform to measure AC losses and the results of the theoretical models' simulation and experimental measurements extremely matched the theoretical results.","PeriodicalId":159493,"journal":{"name":"2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116575977","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
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