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

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Adjoint Based Topology Optimization in Nonlinear Magnetostatics Application to Hall Effect Thrusters 基于共轭的非线性静磁拓扑优化在霍尔效应推力器中的应用
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032827
Rtimi Youness, F. Messine
{"title":"Adjoint Based Topology Optimization in Nonlinear Magnetostatics Application to Hall Effect Thrusters","authors":"Rtimi Youness, F. Messine","doi":"10.1109/COMPUMAG45669.2019.9032827","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032827","url":null,"abstract":"In this paper, density based topology optimization is considered in nonlinear magnetostatics. Previously, topology optimization in linear magnetostatics was formulated to design Hall-effect thrusters and it was solved using gradient based solvers. In that previous version, the gradient information was provided by the continuous adjoint method. Herein, the adjoint approach is updated in order to take into account the saturation aspect of materials. This new version of the adjoint method is implemented and compared to a finite difference approach. The comparison shows that the so-developed adjoint based gradient information in non linear magnetostatics is accurate and ready for use to solve a topology optimization design problem. Hence, a Hall-effect thruster topology optimization problem is solved in both linear and non-linear cases and a comparative description of the found designs will be presented.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"41 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":"132821220","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
Design of a loop-gap resonator with bimodal uniform fields using finite element analysis 双峰均匀场环隙谐振腔的有限元设计
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032729
M. Libersky, D. Silevitch, A. Kouki
{"title":"Design of a loop-gap resonator with bimodal uniform fields using finite element analysis","authors":"M. Libersky, D. Silevitch, A. Kouki","doi":"10.1109/COMPUMAG45669.2019.9032729","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032729","url":null,"abstract":"The loop-gap resonator (LGR) was originally developed to provide a uniform microwave magnetic field on a sample for electron spin resonance (ESR) experiments. The LGR is composed of one or more loops and gaps acting as inductances and capacitances respectively. Typical LGR designs produce a uniform field on a sample at a single resonant frequency, but for certain experiments it is necessary to study the response of a material to uniform fields at multiple frequencies applied simultaneously. In this work we develop an empirical design procedure using finite element method calculations to design an asymmetric loop-gap resonator with uniform fields at two frequencies in the same sample volume and analyze the field uniformity, frequency tunability and filling factors, providing comparison to a manufactured device.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"49 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":"133023880","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
Comparison of identification protocols of a static hysteresis model 静态迟滞模型识别协议的比较
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032825
M. Longhitano, F. Sixdenier, R. Scorretti, C. Geuzaine, F. Henrotte, L. Krähenbühl
{"title":"Comparison of identification protocols of a static hysteresis model","authors":"M. Longhitano, F. Sixdenier, R. Scorretti, C. Geuzaine, F. Henrotte, L. Krähenbühl","doi":"10.1109/COMPUMAG45669.2019.9032825","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032825","url":null,"abstract":"In order to predict magnetic quantities in the magnetic cores of electrical devices, scientists and engineers need hysteresis models sufficiently accurate. Whatever the chosen model, a parameter identification protocol has to be elaborated requiring specific material measurements. This article compares two parameter identification protocols for the same hysteresis model. The protocols, their input and output data, and their accuracy are described in detail and discussed.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"44 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":"131645546","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
Research on Structural Parameters Optimization of Reluctance Resolver Based on Multi-objective Particle Swarm Optimization 基于多目标粒子群算法的磁阻分解器结构参数优化研究
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032773
Zhike Xu, Long Du, Feng Mao, Long Jin
{"title":"Research on Structural Parameters Optimization of Reluctance Resolver Based on Multi-objective Particle Swarm Optimization","authors":"Zhike Xu, Long Du, Feng Mao, Long Jin","doi":"10.1109/COMPUMAG45669.2019.9032773","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032773","url":null,"abstract":"Variable reluctance (VR) resolvers are mainly used in the servo control system to obtain the rotor position and speed feedback information of the motor. In order to further improve the accuracy, this paper takes the reluctance resolver as the research object and utilizes Ansoft to establish its finite element (FE) analysis model. The optimized parameters are the slot-opening width of stator, the rotor sine coefficient, and the minimum air-gap length. The total harmonic distortion and zero-position voltages of the output signals are selected as objective functions. The mathematical model based on support vector regression machine is established by the simulation samples. The improved multi-objective particle swarm optimization algorithm is applied to optimize the model to get the optimal parameters. The final optimal design is selected from the Pareto front using the TOPSIS method. The simulation of the design and experimental results verify the feasibility of the method.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"132 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":"127566351","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
Optimization of an Electromagnetic Actuator using Topology-Optimization 基于拓扑优化的电磁执行器优化
2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2019-07-01 DOI: 10.1109/COMPUMAG45669.2019.9032821
P. Seebacher, M. Kaltenbacher, F. Wein, H. Lehmann
{"title":"Optimization of an Electromagnetic Actuator using Topology-Optimization","authors":"P. Seebacher, M. Kaltenbacher, F. Wein, H. Lehmann","doi":"10.1109/COMPUMAG45669.2019.9032821","DOIUrl":"https://doi.org/10.1109/COMPUMAG45669.2019.9032821","url":null,"abstract":"We apply the SIMP (Solid Isotropic Material with Penalization) method for the topology optimization of an electromagnetic actuator. Thereby, the gradient of the objective function is computed by the adjoint method. The objective to maximize is the electromagnetic force between yoke and anchor, including the consideration of nonlinear material behaviour. Additionally, the pros and cons between topology optimization and a gradient free optimization method are considered.","PeriodicalId":317315,"journal":{"name":"2019 22nd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"11 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":"125500958","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
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