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2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)最新文献

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Pinning Field Modeling Using Stop Hysterons for Multi-domain Particle Model 基于停止磁滞子的多域粒子模型固定场建模
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032764
T. Matsuo, Yuki Nishimura, Yutaka Mishima, T. Mifune, Yasuhito Takahashi, K. Fujiwara
{"title":"Pinning Field Modeling Using Stop Hysterons for Multi-domain Particle Model","authors":"T. Matsuo, Yuki Nishimura, Yutaka Mishima, T. Mifune, Yasuhito Takahashi, K. Fujiwara","doi":"10.1109/COMPUMAG45669.2019.9032764","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032764","url":null,"abstract":"The stress-dependent magnetization of silicon steel is efficiently analyzed by applying an independent particle approximation to an assembled domain structure model. This simplifies magnetostatic computation. Stop hysterons are assembled to represent the pinning field, where the distribution of stop hysterons is determined using the identification methods of scalar and vector stop models. The stress-dependent loss is successfully predicted without parameter fitting to stress-dependent measurements.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126865700","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
Tree gauging in lossy high frequency FEM models 损耗高频有限元模型中的树形测量
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032831
G. Koczka, O. Bíró
{"title":"Tree gauging in lossy high frequency FEM models","authors":"G. Koczka, O. Bíró","doi":"10.1109/COMPUMAG45669.2019.9032831","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032831","url":null,"abstract":"Wave propagation problems involving both high conductivity materials and large non-conducting domains are solved in the frequency domain by the method of finite elements (FEM) using edge and nodal basis functions and applying the A,V-formulation. The singular matrix of the resulting algebraic equation system is regularized by tree gauging to facilitate its direct solution. It is shown that choosing a random tree can result in erroneous solutions even if a highly sophisticated sparse parallel direct equation system solver is used. This problem is overcome by generating the tree by a special algorithm taking account of the presence of high conductivity materials. Two numerical examples are investigated: an academic 1D wave propagation problem and a real-world 3D antenna.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"580 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116305283","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
Application of Conditional Variational Auto-Encoder to Magnetic Circuit Design with Magnetic Field Computation 条件变分编码器在磁场计算磁路设计中的应用
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032766
Ryota Kawamata, S. Wakao, N. Murata
{"title":"Application of Conditional Variational Auto-Encoder to Magnetic Circuit Design with Magnetic Field Computation","authors":"Ryota Kawamata, S. Wakao, N. Murata","doi":"10.1109/COMPUMAG45669.2019.9032766","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032766","url":null,"abstract":"In the design optimization of electric machine, we ordinarily derive the objective physical quantities, e.g., the shape of the investigated model as design variables, by using numerical method such as the finite element method with the analysis conditions. In recent years, the representation learning using Deep Learning much attracts attention because it can acquire the features of data as a distributed representation and reproduce corresponding data. In this paper, utilizing machine learning technology, we propose an application of Conditional Variational Auto-Encoder (CVAE) to reproduce the more adequate shape of magnetic materials, i.e., design variables, corresponding to the intended magnetic energy, i.e., objective function values.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114479732","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
Precision finite element method simulations of a chip-integrated magnetic resonance coil for in-situ MR applications 用于原位磁共振应用的芯片集成磁共振线圈的精密有限元模拟
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032724
Maximilian Spiess, A. Buchau, J. Anders
{"title":"Precision finite element method simulations of a chip-integrated magnetic resonance coil for in-situ MR applications","authors":"Maximilian Spiess, A. Buchau, J. Anders","doi":"10.1109/COMPUMAG45669.2019.9032724","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032724","url":null,"abstract":"With the latest advances in system miniaturization, magnetic resonance (MR) is gaining interest as a tool for material characterization and chemical process control applications. Monolithically integrating both the receiver coil and the active MR electronics reduces the system size and cost. Moreover, the short interconnects avoid wave effects in the connecting cables, leading to a greatly increased design flexibility in the matching network. However, an integrated coil introduces several tradeoffs, which need to be understood well to still be able to achieve an excellent overall system performance. As shown in this paper, precision finite element method electromagnetic simulations are a suitable tool to extract the planar coil’s nonidealities quantitatively and, thereby, devise suitable countermeasures to improve the overall system performance.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123116792","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 Simulation of Transient Electro-Quasistatic Time-Harmonic Nonlinear Field Problems 暂态电-准静态时谐非线性场问题的并行实时仿真
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032822
Marvin-Lucas Henkel, F. Kasolis, M. Clemens
{"title":"Parallel-in-Time Simulation of Transient Electro-Quasistatic Time-Harmonic Nonlinear Field Problems","authors":"Marvin-Lucas Henkel, F. Kasolis, M. Clemens","doi":"10.1109/COMPUMAG45669.2019.9032822","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032822","url":null,"abstract":"Two variants of the Parareal algorithm are presented for parallel-in-time simulations of transient nonlinear time-periodic electro-quasistatic field problems. These variants are used in order to simulate a three-dimensional metal-oxide surge arrester and a three-dimensional high-voltage cable joint. The results obtained with both Parareal variants are verified against a sequential reference solution.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121533980","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
A Posteriori Strategy to Identify Robust Solutions in the Many-Objective Design Optimization of an Axial-Flux Permanent Magnet Synchronous Generator 轴向磁通永磁同步发电机多目标优化设计中鲁棒解的后验辨识策略
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032746
Marcos F. O. Ribeiro, C. L. Sabioni, J. Vasconcelos
{"title":"A Posteriori Strategy to Identify Robust Solutions in the Many-Objective Design Optimization of an Axial-Flux Permanent Magnet Synchronous Generator","authors":"Marcos F. O. Ribeiro, C. L. Sabioni, J. Vasconcelos","doi":"10.1109/COMPUMAG45669.2019.9032746","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032746","url":null,"abstract":"Parametric uncertainties inherently exist in most real-world equipment design. In a generator design optimization process, parametric uncertainties are an important issue given the negative impact they have on generator’s efficiency. In this work, the NSGA-III algorithm is used to obtain a set of robust optimum designs of an Axial-Flux Permanent Magnet Synchronous Generator subjected to parametric uncertainties, and thereafter an a posteriori strategy is applied in the set in order to identify the best robust solution which has low parametric sensitivity and high nominal efficiency to be implemented in practice. This methodology was developed with the aim to select the best robust optimum solution from the robust Pareto-optimal set in a many-objective environment.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"5092 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134257492","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
Optimization of Reluctance Motor with Printed Rotor 印刷转子磁阻电机的优化设计
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032792
Jan Kaska, T. Orosz, P. Karban, I. Doležel, R. Pechánek, D. Pánek
{"title":"Optimization of Reluctance Motor with Printed Rotor","authors":"Jan Kaska, T. Orosz, P. Karban, I. Doležel, R. Pechánek, D. Pánek","doi":"10.1109/COMPUMAG45669.2019.9032792","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032792","url":null,"abstract":"A novel way of optimizing a reluctance motor with rotor manufactured by 3D printing technology is presented. The optimization algorithms must take into account the tolerances of its production that are generally higher compared with classical processing, which requires a high level of robustness. The paper presents complete 3D mathematical models of the forward and backward tasks together with the ways of their numerical solutions. The methodology is illustrated with a practical example.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123583739","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: 7
Synthesis of the mutual inductor of a Wireless Power Transfer Systems: a field-circuit approach 无线电力传输系统互感器的合成:场电路方法
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032721
M. Bertoluzzo, P. di Barba, M. Forzan, M. E. Mognaschi, E. Sieni
{"title":"Synthesis of the mutual inductor of a Wireless Power Transfer Systems: a field-circuit approach","authors":"M. Bertoluzzo, P. di Barba, M. Forzan, M. E. Mognaschi, E. Sieni","doi":"10.1109/COMPUMAG45669.2019.9032721","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032721","url":null,"abstract":"Wireless power transfer systems are a viable solution to solve the problems that still delay a widespread diffusion of electric vehicles. Performances of these systems are affected by the magnetic characteristic of the coupling coils, so that they should be carefully designed. This paper presents a two-stage process for the optimal design of the coils. In the first stage, the equivalent circuit of the coupled coils is synthesized using an analytical approach for the computation of the objective functions and a genetic algorithm for their minimization. In turn, in the second stage, the optimization acts on objective functions computed by FEM analysis and identifies the geometrical parameters of the coils with the aim of achieving the circuit parameters recognized as optimal at the end of the first stage. The effectiveness of the proposed method is checked comparing the obtained coil design with a laboratory prototype.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128677197","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
Multiobjective Coyote Algorithm Applied to Electromagnetic Optimization 多目标Coyote算法在电磁优化中的应用
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032768
Juliano Pierezan, L. dos Santos Coelho, V. Mariani, L. Lebensztajn
{"title":"Multiobjective Coyote Algorithm Applied to Electromagnetic Optimization","authors":"Juliano Pierezan, L. dos Santos Coelho, V. Mariani, L. Lebensztajn","doi":"10.1109/COMPUMAG45669.2019.9032768","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032768","url":null,"abstract":"The Coyote Optimization Algorithm (COA) is a population-based nature-inspired metaheuristic for global optimization that considers the social relations of the coyote proposed originally to single-objective optimization. In this paper, the numerical results are reported to validate a novel proposed multiobjective COA (MOCOA) to solve the Testing Electromagnetic Analysis Method (TEAM) workshop benchmark problem 25. Simulation results demonstrate the validity of the proposed MOCOA to find nondominated solutions that represent good trade-offs among the objectives in the evaluated problem.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122323179","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: 7
Imperfect EM Shielding by Thin Conducting Sheets with PEC and SIBC PEC和SIBC薄导电片对电磁屏蔽的不完善
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032816
M. Leumüller, B. Auinger, H. Hackl, J. Schöberl, K. Hollaus
{"title":"Imperfect EM Shielding by Thin Conducting Sheets with PEC and SIBC","authors":"M. Leumüller, B. Auinger, H. Hackl, J. Schöberl, K. Hollaus","doi":"10.1109/COMPUMAG45669.2019.9032816","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032816","url":null,"abstract":"Electromagnetic compatibility of electronic based systems is increasingly gaining importance. The aim is to develop simulation tools based on the finite element method, which allow the inclusion of electromagnetic compatibility aspects of electronic based systems. The different dimensions of the involved objects are a big challenge, for example ratios higher than 1/100,000 are common. The goal is to find reasonable models to improve the performance. This paper focuses on reducing the metallic shielding to a boundary condition in the model. It is either considered as a perfectly electric conductor or as a surface impedance boundary condition. The problem arises how to apply a surface impedance boundary condition simultaneously inside and outside of the housing, which is solved by splitting the simulation domain. The open domain is truncated and replaced by either an absorbing boundary condition of first order or a perfectly matched layer. They are compared in the context of accuracy and computational cost. A representative example is a small loop antenna located in a metallic box presented here. The antenna is a substitute for more involved emitters. The simulations show that the difference between using perfectly electric conductor or a surface impedance boundary condition are small for the considered quantities. Small changes in the geometry have a greater impact on the results.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123073061","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: 4
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