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2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC)最新文献

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Magnetic Field Calculation of Switched Reluctance Machines Using an Improved Conformal Mapping Method 基于改进保角映射法的开关磁阻电机磁场计算
2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC) Pub Date : 2020-11-16 DOI: 10.1109/CEFC46938.2020.9451364
Zhang Poming, Ma Qishuang, Xu Ping
{"title":"Magnetic Field Calculation of Switched Reluctance Machines Using an Improved Conformal Mapping Method","authors":"Zhang Poming, Ma Qishuang, Xu Ping","doi":"10.1109/CEFC46938.2020.9451364","DOIUrl":"https://doi.org/10.1109/CEFC46938.2020.9451364","url":null,"abstract":"This paper presents an accurate 6/4 switched reluctance machine (SRM) model based on an improved conformal mapping (CM) method. Subdomain method is used to solve the vector magnetic potential of the transformed simple region, and electromagnetic torque is calculated. The developed method is verified by comparing its results with those obtained from the finite element method (FEM).","PeriodicalId":439411,"journal":{"name":"2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122432642","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
Compact Triplex-layer Metamaterials Design for Wireless Power Transfer Efficiency Enhancement 提高无线电力传输效率的紧凑三层超材料设计
2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC) Pub Date : 2020-11-16 DOI: 10.1109/cefc46938.2020.9451226
Jingying Liu, Zhonghuai Chen, Jing Zhou, Hui Sun
{"title":"Compact Triplex-layer Metamaterials Design for Wireless Power Transfer Efficiency Enhancement","authors":"Jingying Liu, Zhonghuai Chen, Jing Zhou, Hui Sun","doi":"10.1109/cefc46938.2020.9451226","DOIUrl":"https://doi.org/10.1109/cefc46938.2020.9451226","url":null,"abstract":"In this paper, a compact triplex-layer and low-frequency metamaterial design scheme is presented. The triplex-layer metal cell can be extended easily and allows for the construction of 5x5 unit-cell sample with dimensions of 36mm x 36mm and operating at a working frequency of 6.78MHz. Results show that using the metamaterial sample in a wireless power transfer (WPT) system results in an efficiency enhancement of 26.8% at a working distance of 15 cm. From simulations and experiments, it is found that the proposed system outperforms two-layer metamaterial-coupled WPT system in terms of efficiency, range and size.","PeriodicalId":439411,"journal":{"name":"2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114553164","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: 2
Computational Strategies Improvement For The Unstructured Inductive PEEC Method 非结构化归纳PEEC方法的计算策略改进
2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC) Pub Date : 2020-11-16 DOI: 10.1109/CEFC46938.2020.9451292
K. Alkama, G. Meunier, O. Chadebec, J. Guichon, B. Bannwarth, E. Vialardi, R. Perrin-Bit
{"title":"Computational Strategies Improvement For The Unstructured Inductive PEEC Method","authors":"K. Alkama, G. Meunier, O. Chadebec, J. Guichon, B. Bannwarth, E. Vialardi, R. Perrin-Bit","doi":"10.1109/CEFC46938.2020.9451292","DOIUrl":"https://doi.org/10.1109/CEFC46938.2020.9451292","url":null,"abstract":"Computational strategies improvements for the inductive unstructured PEEC method are presented in order to address efficiently low frequencies electromagnetic problems. Couplings between volume, surface and line regions have been developed to reduce the number of degrees of freedom and thus the computational cost. Good accuracy on results is ensured thanks to the use of an adaptive Gauss integration procedure for the computation of near interactions. Multi-threaded AMLFMM matrix compression algorithm is used to speed-up far interactions computation. External circuit components can also be coupled to the meshed conductive regions.","PeriodicalId":439411,"journal":{"name":"2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC)","volume":"338 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124743135","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
Dielectric design methodology of power transformers based on the cumulative stress method 基于累积应力法的电力变压器介电设计方法
2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC) Pub Date : 2020-11-16 DOI: 10.1109/CEFC46938.2020.9451417
Odirlan Iaronka, J. P. Assumpcão Bastos, W. P. Carpes
{"title":"Dielectric design methodology of power transformers based on the cumulative stress method","authors":"Odirlan Iaronka, J. P. Assumpcão Bastos, W. P. Carpes","doi":"10.1109/CEFC46938.2020.9451417","DOIUrl":"https://doi.org/10.1109/CEFC46938.2020.9451417","url":null,"abstract":"The complexity of the dielectric design of the oil isolated power transformer increases with the voltage amplitude applied to the equipment. For a project with a dielectric safety margin and adequate manufacturing costs, it is necessary to develop a design methodology for all transformer points for any voltage and power levels. This work proposes a methodology for the dielectric design and calculation of the insulation safety margin of the connection elements external to the windings. The method is based on numerical computer simulations using the Finite Element Method (FEM) and the Cumulative Stress Method (CSM).","PeriodicalId":439411,"journal":{"name":"2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130578132","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
Model Based Procedure for in Situ Error Compensation of Spatially Distributed Magnetic Sensors 基于模型的空间分布磁传感器原位误差补偿方法
2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC) Pub Date : 2020-11-16 DOI: 10.1109/CEFC46938.2020.9451510
N. Marconato, P. Bettini, P. Alotto, R. Cavazzana, L. Marrelli, R. Torchio, D. Voltolina
{"title":"Model Based Procedure for in Situ Error Compensation of Spatially Distributed Magnetic Sensors","authors":"N. Marconato, P. Bettini, P. Alotto, R. Cavazzana, L. Marrelli, R. Torchio, D. Voltolina","doi":"10.1109/CEFC46938.2020.9451510","DOIUrl":"https://doi.org/10.1109/CEFC46938.2020.9451510","url":null,"abstract":"This paper presents a model based procedure for in situ error compensation of spatially distributed magnetic sensors. The proposed approach is numerically validated on RFX-mod, a magnetically confined plasma experiment presently being upgraded with a new magnetic diagnostic system and a state-of-the-art real time control system. The numerical simulations are performed with the CAFE code; synthetic measurements are used to assess the reliability of the proposed method.","PeriodicalId":439411,"journal":{"name":"2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114618953","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
Numerical Determination of Grounding Resistance in Multilayer Soil with Stratification Optimized by a Genetic Algorithm 遗传算法优化分层多层土壤接地电阻的数值确定
2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC) Pub Date : 2020-11-16 DOI: 10.1109/CEFC46938.2020.9451425
Marina Gasparini Pinho, V. C. Silva, L. Lebensztajn
{"title":"Numerical Determination of Grounding Resistance in Multilayer Soil with Stratification Optimized by a Genetic Algorithm","authors":"Marina Gasparini Pinho, V. C. Silva, L. Lebensztajn","doi":"10.1109/CEFC46938.2020.9451425","DOIUrl":"https://doi.org/10.1109/CEFC46938.2020.9451425","url":null,"abstract":"This work presents the determination of the resistance of multilayer grounding systems by a finite elements analysis with an optimization of the soil stratification and an appropriate truncation method for 3D domains. Based on experimental resistivity data, the optimization process of the stratification was carried out by a Genetic Algorithm. The Perfectly Matched Layers technique was used to truncate the 3D open boundary. The results obtained with the association of these two tools developed in this work were validated experimentally.","PeriodicalId":439411,"journal":{"name":"2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127588653","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
Implementation of the Magnetic Anisotropy in 2D Finite Element Method Using the Theory of Orientation Distribution Functions 利用方向分布函数理论实现二维有限元法中的磁各向异性
2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC) Pub Date : 2020-11-16 DOI: 10.1109/CEFC46938.2020.9451381
G. Tolentino, J. Leite, G. Parent, N. Batistela
{"title":"Implementation of the Magnetic Anisotropy in 2D Finite Element Method Using the Theory of Orientation Distribution Functions","authors":"G. Tolentino, J. Leite, G. Parent, N. Batistela","doi":"10.1109/CEFC46938.2020.9451381","DOIUrl":"https://doi.org/10.1109/CEFC46938.2020.9451381","url":null,"abstract":"In this work the magnetic anisotropy phenomenon in ferromagnetic materials was modeled using Orientation Distribution Function (ODF). The ODF is a concept that can be used to model the first magnetization curve of electrical steel sheet along any magnetization direction. The model is inserted in a 2D Finite Element (FE) field calculation software with vector magnetic potential formulation. Aspects related to the inclusion of the model in the formulation and its performance are discussed.","PeriodicalId":439411,"journal":{"name":"2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130453541","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
Locally Defined Electromagnetic Force Density Inside Materials 材料内部的局部定义电磁力密度
2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC) Pub Date : 2020-11-16 DOI: 10.1109/CEFC46938.2020.9451390
B. S. Park, J. O. Park, I. Park
{"title":"Locally Defined Electromagnetic Force Density Inside Materials","authors":"B. S. Park, J. O. Park, I. Park","doi":"10.1109/CEFC46938.2020.9451390","DOIUrl":"https://doi.org/10.1109/CEFC46938.2020.9451390","url":null,"abstract":"An object's shape may be deformed by a combination of gravitational, hydrostatic, mechanical, and electromagnetic forces. Therefore, to predict the deformation, it is necessary to know each force's distribution inside the object. Various expressions and methods, such as the Lorentz, Kelvin, generalized, and Korteweg-Helmholtz forces, can be used to calculate the electromagnetic force on a dielectric or magnetic material. However, the distributions of the aforementioned forces inside materials may differ significantly. We adopt the concepts of infinitesimal particles and external electromagnetic fields to address this issue. Adopting these concepts enables the electromagnetic force densities inside dielectric or magnetic materials to be uniquely determined. We refer to this type of density as the locally defined electromagnetic force density (FLEM). This study primarily focuses on the derivation of F(LEM)• Subsequently, the distribution of FLEMis then demonstrated using simple numerical models.","PeriodicalId":439411,"journal":{"name":"2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC)","volume":"os-44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127782494","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
Parallel-in-Time Solution of Eddy Current Problems Using Implicit and Explicit Time-stepping Methods 用隐式和显式时间步进法并行求解涡流问题
2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC) Pub Date : 2020-11-16 DOI: 10.1109/CEFC46938.2020.9451465
I. C. Garcia, Iryna Kulchytska-Ruchka, M. Clemens, S. Schöps
{"title":"Parallel-in-Time Solution of Eddy Current Problems Using Implicit and Explicit Time-stepping Methods","authors":"I. C. Garcia, Iryna Kulchytska-Ruchka, M. Clemens, S. Schöps","doi":"10.1109/CEFC46938.2020.9451465","DOIUrl":"https://doi.org/10.1109/CEFC46938.2020.9451465","url":null,"abstract":"The time domain analysis of eddy current problems often requires the simulation of long time intervals, e.g. until a steady state is reached. Fast-switching excitations e.g. in pulsed-width modulated signals require in addition very small time step sizes that significantly increase computation time. To speed up the simulation, parallel-in-time methods can be used. In this paper, we investigate the combination of explicit and implicit time integration methods in the context of the parallel-in-time method Parareal and using a simplified model for the coarse propagator.","PeriodicalId":439411,"journal":{"name":"2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133757624","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
Characteristic Analysis of a Permanent Magnet Eddy-Current Brake Under Strong Impact Load 强冲击载荷下永磁涡流制动器特性分析
2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC) Pub Date : 2020-11-16 DOI: 10.1109/CEFC46938.2020.9451454
Jiahao Li, Guolai Yang, Yumeng Fan
{"title":"Characteristic Analysis of a Permanent Magnet Eddy-Current Brake Under Strong Impact Load","authors":"Jiahao Li, Guolai Yang, Yumeng Fan","doi":"10.1109/CEFC46938.2020.9451454","DOIUrl":"https://doi.org/10.1109/CEFC46938.2020.9451454","url":null,"abstract":"This paper addresses the braking characteristics of a permanent magnet eddy-current brake under strong impact load. The acceleration of the eddy current brake (ECB) will be very large under the action of strong impact load. It is observed that the braking force characteristics of the ECB in high acceleration are different from those under quasi-static condition. That is, braking force is no longer a single function of velocity. At first, the quasi-static analytical model is established by solving boundary value problems using Fourier series. And then the accuracy of the quasi-static analytical model and the two-dimensional finite element model (FEM) is verified by comparing the results of the two models. Finally, the braking force characteristics of eddy-current brake under strong impact load and the influence of related factors on its braking force characteristics are analyzed using the FEM to provide valuable information for the design of this kind of ECB.","PeriodicalId":439411,"journal":{"name":"2020 IEEE 19th Biennial Conference on Electromagnetic Field Computation (CEFC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114570580","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
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