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electromagnetic Modeling of the Passive Stabilization Loop at EAST

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Plasma Science and Technology 2012年第9期14卷 855-858页

作者：戢翔宋云涛武松涛王志滨沈光刘旭峰曹磊周自波彭学兵王成昊 Institute of Plasma Physics Chinese Academy of Sciences

A passive stabilization loop （PSL） has been designed and manufactured in order to enhance the control of vertical instability and accommodate the new stage for high-performance plasma at EAST. Eddy currents are induced by vertical displacement events （VDEs） and disrup- tion, which can produce a magnetic field to control the vertical instability of the plasma in a short timescale. A finite element model is created and meshed using ANSYS software. Based on the simulation of plasma VDEs and disruption, the distribution and decay curve of the eddy currents on the PSL are obtained. The largest eddy current is 200 kA and the stress is 68 MPa at the outer current bridge, which is the weakest point of the PSL because of the eddy currents and the magnetic fields. The analysis results provide the supporting data for the structural design.

关键词： passive stabilization loop （PSL） electromagnetic analysis structural analysis VDEs disruption

Numerical Simulation Approaches to Evaluating the electromagnetic Loads on the EAST Vacuum Vessel

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Plasma Science and Technology 2013年第12期15卷 1241-1246页

作者：黎俊徐薇薇宋云涛鲁明宣 Institute of Plasma Physics Chinese Academy of Sciences

Numerical simulation approaches are developed to compute the electromagnetic forces on the EAST vacuum vessel during major disruptions and vertical displacement events, with the halo current also considered. The finite element model built with ANSYS includes the vacuum vessel, the plasma facing components and their support structure, and the toroidal and poloidal field coils. The numerical methods are explained to convince of its validity. The eddy current induced by the magnetic flux variation and the conducting current caused by the halo current are also presented for discussion. The electromagnetic forces resulting from the numerical simulation are proven to be useful for structure design optimization. Similar methods can be applied in the upgrades of the EAST device.

关键词： EAST electromagnetic analysis plasma disruption vertical displacementevent halo current vacuum vessel plasma facing components

Current Sharing analysis of Arm Prototype for ITER PF Converter Bridge

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Plasma Science and Technology 2014年第3期16卷 283-287页

作者：李金超宋执权许留伟傅鹏郭斌李森董琳王敏 Institute of Plasma Physics Chinese Academy of Sciences China International Nuclear Fusion Energy Program Execution Center

A bridge arm prototype of ITER poloidal field （PF） converter modules has been designed and fabricated. Non-cophase counter parallel connection is chosen as the arm structure of the prototype. Among all factors affecting current sharing, arm structure is the main one. During the design of the arm prototype, a novel method based on inductance matrixes is employed to improve the current sharing of the bridge arm. The test results on the prototype show that the current sharing performance of the arm prototype is much better than relevant design requirement, and that the matrix method is very effective to analyze and solve the current sharing problems of thyristor converters.

关键词： thyristor converter current sharing electromagnetic analysis inductance ma-trix

Numerical Analyses of electromagnetic Forces on the ITER Blanket Module Shield Block During Major Disruptions

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Plasma Science and Technology 2014年第7期16卷 701-705页

作者：康伟山袁涛孙倩吴继红谌继明 Southwestern Institute of Physics

electromagnetic（EM） load is one of the key design drivers for the blanket shield block（SB） and other in-vessel components. In this article, an EM analysis method was developed to address the EM force on the SB. The plasma currents, which vary spatially and temporally,are loaded as a filament at each time point. The standard blanket module No.04（BM04） under major disruption（MD） is selected to perform the analyses. The analyses results are validated by comparing currents on the passive structure. To better understand the effects of cooling channels and slits on the EM force, the case of SB without cooling channel and the case without slits are calculated to make comparisons. The results show that the slits play an important role in controlling the EM load on SB.

关键词： ITER blanket module shield block electromagnetic analysis major disruption FEM

electromagnetic and Stress Analyses of the ITER Equatorial Thermal Shield

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Plasma Science and Technology 2013年第8期15卷 830-833页

作者：雷明准宋云涛王松可汪献伟 Institute of Plasma Physics Chinese Academy of Sciences

The ITER equatorial thermal shield is located inside the cryostat and outside the vacuum vessel, and its purpose is to provide a thermal shield from hot components to the superconducting magnets. electromagnetic analysis of the equatorial thermal shield was performed using the ANSYS code, because electromagnetic load was one of the main loads. The 40 sector finite element model was established including the vacuum vessel, equatorial thermal shield, and superconducting magnets. The main purpose of this analysis was to investigate the eddy current and electromagnetic force in the equatorial thermal shield during plasma disruption. Stress analysis was implemented under the electromagnetic load. The results show that the equatorial thermal shield can accommodate the calculated electromagnetic loads.

关键词： tokamak thermal shield finite element electromagnetic analysis ITER

An Approach to the Dyadic Green’s Functions for a Rectangular Chirowaveguide

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An Approach to the Dyadic Green’s Functions for a Rectangul...

analysis of Large-Scale EM Scattering Using the Parallel Characteristic Basis Function Method

2006 7th International Symposium on Antennas, Propagation and EM Theory

作者： Zhong Haiyang Qin Zhian Department of Physics Dalian Maritime University

A novel method of formulating eigenfunction expansion of the dyadic Green’s function in lossless, recipcocal and homogeneous chirowaveguides is given,using this method,the non-divergence vector pot

ISBN: (纸本)1424401623;9781424401628

A novel method of formulating eigenfunction expansion of the dyadic Green’s function in lossless, recipcocal and homogeneous chirowaveguides is given,using this method,the non-divergence vector pot

关键词： Green's function methods Maxwell equations Eigenvalues and eigenfunctions electromagnetic propagation electromagnetic analysis Wave functions electromagnetic scattering electromagnetic fields Physics Green function

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Analysis of Large-Scale EM Scattering Using the Parallel Cha...

Excitation of Surface Plasmons Achieve Total Absorption of electromagnetic Wave in Overdense Plasma

2006 7th International Symposium on Antennas, Propagation and EM Theory

作者： Hong Lin Wenfeng Cai Huiping Guo Xueguan Liu School of Electronics and Information Engineering Soochow University

It is crucial to overcome the limitation of the computer capacity in analyzing the electromagnetic (EM) scattering from electrically large objects.The characteristic basis function method(CBFM) is

关键词： Large-scale systems electromagnetic scattering Radar scattering Transmission line matrix methods electromagnetic analysis Message-oriented middleware Equations Information analysis Moment methods Microstrip antennas

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Excitation of Surface Plasmons Achieve Total Absorption of E...