| 引用本文: | 林 勇,倪有源.电流互感器三维磁场分析与互感计算[J].电力自动化设备,2011,31(1): |
| LIN Yong,NI Youyuan.3-D magnetic field analysis and mutual inductance computation of current transducer[J].Electric Power Automation Equipment,2011,31(1): |
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| 摘要: |
| 用三维有限元方法分析计算了几类电流互感器的三维磁场和互感系数。采用有限元商用软件包Ansoft，基于能量摄动法计算得到罗氏线圈、含线性铁心电流互感器以及含非线性铁心电流互感器在不同参数下的互感系数，并进一步分析得到其变化规律。该方法简单易行，可用于计算规则、不规则形状电流互感器电感参数。对于圆形和矩形罗氏线圈，有限元法与解析方法计算结果的一致性验证了有限元法计算的正确性。 |
| 关键词: 电流互感器 能量摄动法 互感 磁场 三维有限元 |
| DOI： |
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| 基金项目:安徽省高等学校省级自然科学研究重点（2009AJZ R0121） |
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| 3-D magnetic field analysis and mutual inductance computation of current transducer |
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LIN Yong, NI Youyuan
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School of Electrical Engineering & Automation，Hefei University of Technology，Hefei 230009，China
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| Abstract: |
| The magnetic field and mutual inductance are calculated with 3-D（three-Dimensional） finite element method for some types of current transducer. With the commercial finite element software packet Ansoft and based on the energy perturbation method，the mutual inductances of Rogowski coil and current transducer with linear or nonlinear iron core are calculated under different parameters，and their variation roles are obtained. The presented method is simple and convenient to calculate the inductance parameters of current transducers with regular or irregular shape. The calculated results by the finite element method and the analytical method for Rogowski coil with circle or rectangular cross-section are conformable，validating the correctness of the finite element method. |
| Key words: current transducer energy perturbation method mutual inductance magnetic field three-dimensional finite element |
