| 轴对称多导体涡流场的积分微分方程有限元法 |
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| 引用本文： | 刘承输. 轴对称多导体涡流场的积分微分方程有限元法[J]. 天津大学学报(自然科学与工程技术版), 1993, 0(5): 42-49 |
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| 作者姓名： | 刘承输 |
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| 作者单位： | 天津大学电力及自动化工程系 副教授 |
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| 摘 要： | 研究积分微分方程有限元法解轴对称多导体的涡流场问题，采用伽辽金准则离散。以变压器的箔式绕组作为一类涡流场的实例，分析计算绕组中的电流密茺分布、漏磁场分布以及交流电阻和电抗。同时，初步分析突然短路时绕组中电磁力分布及其随突发短路能力的特点。计算值与试验值相符。
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| 关 键 词： | 积分微分方程 多导体系统 涡流场 |
AN INTEGRO-DIFFERENTIAL EQUATION FEM OF EDDY CURRENT FIELD FOR AXISYMMETRICAL MULTICONDUCTOR SYSTEMS |
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| Liu Chengyu. AN INTEGRO-DIFFERENTIAL EQUATION FEM OF EDDY CURRENT FIELD FOR AXISYMMETRICAL MULTICONDUCTOR SYSTEMS[J]. Journal of Tianjin University(Science and Technology), 1993, 0(5): 42-49 |
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| Authors: | Liu Chengyu |
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| Affiliation: | Dept. of Electrical Engineering & Automation |
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| Abstract: | This paper studies the solution of an integro-differential equation finite element formulation to eddy current field in axisymmetrical multicondactor systems. In the present formulation, discretization is done by using Galerkin criterion. The foil-winding in a transformer is a typical example of axisymmetrical multiconductor systems. A detailed calculation shows the distribution of current density in winding, leakage flux distribution, a. c. resistance and leakage reactance. The initial analysis also shows the distribution of electromagnetic forces in windings in sudden short-circuit, and the characteristics of supporting capacity. The present approach is validated by the agreement between the calculated and the test results. |
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| Keywords: | integro-differential equation FEM muiticonductor systems eddy current field foil-winding |
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