日本語フィールド
著者：福本尚生、古川達也、伊藤秀昭、相知政司 読み: フクモトヒサオ、フルカワタツヤ、イトウヒデアキ、オウチマサシ題名：Calculating leakage reactance of 9-winding transformer using time-dependent 3D FEM analysis発表情報：Industrial Electronics Society, IECON 2015 41st Annual Conference of the IEEE ページ: 4459-4464キーワード：Multiple-Winding Transformer, Finite Element Analysis, Leakage Inductance, Power Electronics概要：抄録：Calculating leakage reactance of transformers is a very important factor in designing transformers. It is difficult to calculate the leakage reactance in multiple-winding transformers, because their structures are more complicated. The finite element method (FEM) is useful to obtain the leakage reactance in such a complex case. Using a 3D FEM analysis, leakage reactances have been calculated and compared to experimental results. But, there were differences between the results of FEM analysis and the experimental results. In this paper, the leakage reactance is calculated by using a coupled-field analysis, which combined electromagnetic field analysis and electric circuit analysis, for simulation of short-circuit test in multiple-winding transformer. The results of this analysis showed that current values of parallelly connected primary windings are very different by the physical geometry of the secondary winding. The leakage reactances calculated by using the coupled-field analysis are qualitatively the same as experimental results.英語フィールド
Author：Hisao Fukumoto, Tatsuya Furukawa, Hideaki Itoh, Masashi OhchiTitle：Calculating leakage reactance of 9-winding transformer using time-dependent 3D FEM analysisAnnouncement information:Industrial Electronics Society, IECON 2015 41st Annual Conference of the IEEE Page: 4459-4464Keyword：Multiple-Winding Transformer, Finite Element Analysis, Leakage Inductance, Power ElectronicsAn abstract：Calculating leakage reactance of transformers is a very important factor in designing transformers. It is difficult to calculate the leakage reactance in multiple-winding transformers, because their structures are more complicated. The finite element method (FEM) is useful to obtain the leakage reactance in such a complex case. Using a 3D FEM analysis, leakage reactances have been calculated and compared to experimental results. But, there were differences between the results of FEM analysis and the experimental results. In this paper, the leakage reactance is calculated by using a coupled-field analysis, which combined electromagnetic field analysis and electric circuit analysis, for simulation of short-circuit test in multiple-winding transformer. The results of this analysis showed that current values of parallelly connected primary windings are very different by the physical geometry of the secondary winding. The leakage reactances calculated by using the coupled-field analysis are qualitatively the same as experimental results.