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Model Order Reduction for Thermal Analysis of Wireless Power Transfer Systems Considering Radiation 考虑辐射的无线输电系统热分析模型降阶
2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2022-01-01 DOI: 10.1109/compumag55718.2022.9827513
M. Tiemann, M. Clemens, B. Schmuelling
{"title":"Model Order Reduction for Thermal Analysis of Wireless Power Transfer Systems Considering Radiation","authors":"M. Tiemann, M. Clemens, B. Schmuelling","doi":"10.1109/compumag55718.2022.9827513","DOIUrl":"https://doi.org/10.1109/compumag55718.2022.9827513","url":null,"abstract":"This work provides a comprehensive analysis of the thermal behavior of wireless power transfer systems for electric vehicles. This is achieved by employing the reduced-order modeling approach considering radiation heat transfer. The analyses are performed using finite element analysis modeling software ANSYS workbench. We show that the accuracy of the system-level simulations utilizing the reduced-order model is sufficient compared to the results obtained from the corresponding magnetic-thermal coupled-field simulations. Moreover, experimental validations are carried out to determine the agreement of the reduced-order model with the test platform.","PeriodicalId":430005,"journal":{"name":"2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123717006","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
An Integrated Analytical Model of Permanent Magnet Brushless DC Motors System 永磁无刷直流电动机系统集成分析模型
2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2022-01-01 DOI: 10.1109/compumag55718.2022.9827506
Bining Zheng, Zhen Zhang, T. Shi, Yanfei Cao, C. Xia
{"title":"An Integrated Analytical Model of Permanent Magnet Brushless DC Motors System","authors":"Bining Zheng, Zhen Zhang, T. Shi, Yanfei Cao, C. Xia","doi":"10.1109/compumag55718.2022.9827506","DOIUrl":"https://doi.org/10.1109/compumag55718.2022.9827506","url":null,"abstract":"In this paper, an analytical model of permanent magnet brushless dc motors (BLDCM) coupled with inverter is proposed visa field-circuit coupled method. Firstly, the relationship between the motor supply voltage and the DC-link voltage is analyzed based on the modulation scheme and the operation period of BLDCM. Then, a total solution matrix containing the analytical relations of motor supply voltage, current and motor structure parameters is established to calculate the vector potentials and the currents simultaneously. As a result, the output torque is calculated accurately. The proposed model can consider the influence of the motor structure, such as slotting, spatial distribution of the windings, etc, and control parameters on the motor performance. Compared with the simulation results of the field-circuit coupled time-stepping finite element model and experimental results, the proposed model is with high accuracy and rapidity for the current and output torque calculation. Furthermore, based on the proposed model, the effects of the pole arc ratio, air-gap length, coil turns and lead angle on the average torque and torque-current ratio are researched, which can provide the guidance for the fast optimal design of the BLDCM system.","PeriodicalId":430005,"journal":{"name":"2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122696903","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
Modelling the Flux-Line Cutting in the Magnetization of a Weak-Pinning Type-II Superconductor 弱钉扎型超导体磁化过程中磁通线切割的模拟
2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2022-01-01 DOI: 10.1109/compumag55718.2022.9826992
O. A. Hernández-Flores, R. Cortés-Maldonado, C. Romero-Salazar
{"title":"Modelling the Flux-Line Cutting in the Magnetization of a Weak-Pinning Type-II Superconductor","authors":"O. A. Hernández-Flores, R. Cortés-Maldonado, C. Romero-Salazar","doi":"10.1109/compumag55718.2022.9826992","DOIUrl":"https://doi.org/10.1109/compumag55718.2022.9826992","url":null,"abstract":"The elliptic flux-line cutting critical-state model is employed to describe the magneto dynamics of a type-II superconductor subjected to a rotating magnetic field whose magnitude is of the same order of the lower critical field of the material. The effect of the Meissner currents, bulk pinning and flux-line cutting on the magnetic response of a weak-pinning premagnetized superconductor is investigated. We simulate the magnetization of a superconducting slab under a slowly rotating field, employing the method of lines and a second-order accurate spatial discretization based on a fixed set of nodes. For this system the numerical method is fast and accurate. We achieve a good agreement between our simulations and experimental data.","PeriodicalId":430005,"journal":{"name":"2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122747797","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
Novel Magnetic Circuit Design and Acceleration Calculation of Horizontal Linear Vibration Motor 新型卧式直线振动电机磁路设计及加速度计算
2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2022-01-01 DOI: 10.3390/act11060149
Z. Jiang, Kihong Park, Sangmoon Hwang
{"title":"Novel Magnetic Circuit Design and Acceleration Calculation of Horizontal Linear Vibration Motor","authors":"Z. Jiang, Kihong Park, Sangmoon Hwang","doi":"10.3390/act11060149","DOIUrl":"https://doi.org/10.3390/act11060149","url":null,"abstract":"This study proposes a novel magnetic circuit design to reduce the size of horizontal linear vibration motors (HLVMs) used in vehicle LCD panels. The HLVM prototype uses two thick permanent magnets to create a magnetic circuit below the voice coil; however, the novel design places four thin permanent magnets above and below the voice coil. Moreover, the coil position has been changed to a yoke center to create an effective magnetic circuit with short magnets. Compared with the vertical linear vibration motor, the force calculation method of the HLVM is significantly different. In this study, a new force calculation method is used to analyze the electromagnetic- mechanical coupling of the HLVM. As a prototype, the novel design is small in size (−28.85%) but possesses similar acceleration. The experimental results verify the analysis results of the HLVM in the displacement and acceleration on a dummy jig.","PeriodicalId":430005,"journal":{"name":"2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122139434","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
Novel Design of Dual Voice Coil Microspeaker with Reduced Back Volume 缩小后置音量的双音圈微型扬声器的新设计
2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2022-01-01 DOI: 10.1109/compumag55718.2022.9827515
Zhi-Xiong Jiang, Kihong Park, Sang-Moon Hwang
{"title":"Novel Design of Dual Voice Coil Microspeaker with Reduced Back Volume","authors":"Zhi-Xiong Jiang, Kihong Park, Sang-Moon Hwang","doi":"10.1109/compumag55718.2022.9827515","DOIUrl":"https://doi.org/10.1109/compumag55718.2022.9827515","url":null,"abstract":"Microspeakers are typically used in portable devices to generate sound. As smartphones become increasingly compact, the space available for microspeakers also decrease, which reduces the back volume from $0.60 text{cm}^{3}$ to $0.25 text{cm}^{3}$. This reduction results in an increase in the stiffness of the microspeaker, which affects the sound pressure level (SPL) at low frequencies. This paper proposes a dual-coil microspeaker design for SPL enhancement at low frequencies while maintaining the same size as a prototype microspeaker. The analysis method uses to solve the electromagnetic-mechanical-acoustic coupling system is verified experimentally in advance. The proposed dual-coil microspeaker is designed and analyzed using three-dimensional finite element methods. Samples are manufactured and measured. Compared to the prototype, the novel dual-coil microspeaker in serial connection presents a higher Lorentz force (+7.4 %), resulting in an SPL improvement of 2.27 dB at low frequencies.","PeriodicalId":430005,"journal":{"name":"2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115557587","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
Finite Element Mesh Based Hybrid Monte Carlo Micromagnetics 基于有限元网格的混合蒙特卡罗微磁学
2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2022-01-01 DOI: 10.1109/compumag55718.2022.9827522
Lei Xu
{"title":"Finite Element Mesh Based Hybrid Monte Carlo Micromagnetics","authors":"Lei Xu","doi":"10.1109/compumag55718.2022.9827522","DOIUrl":"https://doi.org/10.1109/compumag55718.2022.9827522","url":null,"abstract":"In order to obtain a self-consistent simulation result for the irregular shaped magnetic model at finite temperature, the finite element mesh and Monte Carlo algorithm are combined and developed into finite element mesh-based hybrid Monte Carlo micromagnetics. The simulation results reveal that the dynamical motion of this method has no procession, so the quasi-static equilibrium state of the magnetic model can be reached much faster, and this method is also more numerically robust for soft magnetic material than the conventional Landau-Lifshitz-Gilbert equation method. The finite element discretization of the magnetic model makes the method more powerful and convenient in dealing with the arbitrarily shaped model. And more importantly, this method can explain the decrease of coercive field versus increasing temperature and generate self-consistent solutions for the quasi-static magnetic problem at finite temperature.","PeriodicalId":430005,"journal":{"name":"2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124136228","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
Genetic Algorithm Based Geometry Optimization of Terahertz Plasmonic Modulator Antennas 基于遗传算法的太赫兹等离子调制器天线几何优化
2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2022-01-01 DOI: 10.1109/compumag55718.2022.9827512
H. Ibili, A. Gungor, M. Maciejewski, J. Smajic, J. Leuthold
{"title":"Genetic Algorithm Based Geometry Optimization of Terahertz Plasmonic Modulator Antennas","authors":"H. Ibili, A. Gungor, M. Maciejewski, J. Smajic, J. Leuthold","doi":"10.1109/compumag55718.2022.9827512","DOIUrl":"https://doi.org/10.1109/compumag55718.2022.9827512","url":null,"abstract":"Plasmonic modulator antennas with high field enhancement values are essential to detect weak fields at high speeds in future communication systems. Consequently, such antennas with high field enhancement values at frequencies reaching up to 500 GHz are rising interest in the research. These antenna systems enable direct mapping of electromagnetic waves onto the optical signals. Thereby, they eliminate the radio frequency (RF) losses that are introduced by the conventional RF to optical conversion systems. The high field enhancement values over a broad frequency bandwidth at millimeter-wave frequencies enable efficient, robust, and accurate operation. The geometry of the antenna, as well as the dimensions of the geometric parameters, determine the field enhancement response with respect to frequency. In this work, we have optimized the geometry and design of the plasmonic modulator antenna by means of a genetic algorithm and have presented promising results.","PeriodicalId":430005,"journal":{"name":"2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114848580","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 Energy Based Hysteresis Models 基于能量的迟滞模型的比较
2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2022-01-01 DOI: 10.1109/compumag55718.2022.9827509
M. Kaltenbacher, K. Roppert, L. Domenig, Herbert Egger
{"title":"Comparison of Energy Based Hysteresis Models","authors":"M. Kaltenbacher, K. Roppert, L. Domenig, Herbert Egger","doi":"10.1109/compumag55718.2022.9827509","DOIUrl":"https://doi.org/10.1109/compumag55718.2022.9827509","url":null,"abstract":"Energy based (EB) hysteresis models are thermodynamic consistent, show high potential for physically modeling ferromagnetic materials with high precision and have the capability to be implemented in Finite Element (FE) formulations with high efficiency. In this contribution, we review two EB hysteresis models and show their equivalence analytically. Furthermore, we provide details of the parameter identification based on Epstein frame measurements and an efficient Finite Element (FE) formulation. Finally, we demonstrate the applicability and numerical efficiency of the vector hysteresis model to rotating magnetic fields.","PeriodicalId":430005,"journal":{"name":"2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127549109","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
Unbounded Axisymmetric FEM Formulation for Static Fields 静态场的无界轴对称有限元公式
2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2022-01-01 DOI: 10.1109/compumag55718.2022.9827524
R. R. A. Coelho, J. Cardoso
{"title":"Unbounded Axisymmetric FEM Formulation for Static Fields","authors":"R. R. A. Coelho, J. Cardoso","doi":"10.1109/compumag55718.2022.9827524","DOIUrl":"https://doi.org/10.1109/compumag55718.2022.9827524","url":null,"abstract":"This paper describes an unbounded approach for solving the Poisson equation by the Finite Element Method (FEM). With domain mapping, it is unnecessary to truncate the domain at an arbitrary distance, where the potential is assumed negligible. The formulation herein has applications for static fields, has a simple implementation, and can handle infinite heterogeneous domains, which is a limitation of several FEM software. Such an approach raises the simulation precision and can save computational resources.","PeriodicalId":430005,"journal":{"name":"2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115799742","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
Comparing Two Topology Transformer Hysteresis Models with Power Transformer Measurements 两种拓扑变压器迟滞模型与电力变压器实测数据的比较
2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG) Pub Date : 2022-01-01 DOI: 10.1109/compumag55718.2022.9827499
D. Albert, L. Domenig, D. Maletic, A. Reinbacher-Köstinger, K. Roppert, H. Renner
{"title":"Comparing Two Topology Transformer Hysteresis Models with Power Transformer Measurements","authors":"D. Albert, L. Domenig, D. Maletic, A. Reinbacher-Köstinger, K. Roppert, H. Renner","doi":"10.1109/compumag55718.2022.9827499","DOIUrl":"https://doi.org/10.1109/compumag55718.2022.9827499","url":null,"abstract":"Power transformer modelling and simulation requires detailed material and design information. However, this detailed information about a transformer is usually not entirely available. Therefore, we use a supplemental single-phase excitation setup (saturation test) to measure the transformer core hysteresis characteristic at elevate voltages. Only transformer parameters from the factory acceptance test and very few design data is used to set up the topology transformer models. In topology-correct models each section of the core is represented separately. Also the different off-core (leakage) flux paths can be included in the models. In this study we compare two transformer topology models in the electric domain with measurements from a 3-limb 2-winding, 50 kVA transformer in YNyn0 vector group. The first model uses the capacitance-permeance analogy to model the transformer. The second model uses the principle of duality of electric and magnetic circuits together with the Jiles-Atherton (JA) model for the hysteresis implementation. The hysteresis model parameters in both models are identified with the Nelder-Mead Simplex algorithm. We have found that both transformer topology models can reproduce the measured current waveforms during the no-load and saturation test with very good accuracy. The active and reactive power deviation between the capacitor-permeance model and the measurements are below 10 %, and for the JA model below 17 % for the no-load and the saturation test.","PeriodicalId":430005,"journal":{"name":"2022 23rd International Conference on the Computation of Electromagnetic Fields (COMPUMAG)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131338495","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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