Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481438
Zhao Bo, Zou Jibin, Fu Xinghe, Jiang Xintong
In the past, the stator core loss was considered as a whole or sub-blocks heat source in the temperature field calculation, while the actual loss was distributed throughout the core. Consequently, this approach resulted in calculation error. To reduce the error, a magnetic-thermal element coupling algorithm is presented. Elements loss, calculated in 2D magnetic field by using FEM, is coupled to the corresponding 3D element to calculate transient temperature field. Let us take permanent magnet generator for example. A transient temperature field analysis is carried out by using the magnetic-thermal element coupling algorithm.
{"title":"Permanent magnet generator 3D transient temperature field analysis based on magnetic-thermal element coupling algorithm","authors":"Zhao Bo, Zou Jibin, Fu Xinghe, Jiang Xintong","doi":"10.1109/CEFC.2010.5481438","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481438","url":null,"abstract":"In the past, the stator core loss was considered as a whole or sub-blocks heat source in the temperature field calculation, while the actual loss was distributed throughout the core. Consequently, this approach resulted in calculation error. To reduce the error, a magnetic-thermal element coupling algorithm is presented. Elements loss, calculated in 2D magnetic field by using FEM, is coupled to the corresponding 3D element to calculate transient temperature field. Let us take permanent magnet generator for example. A transient temperature field analysis is carried out by using the magnetic-thermal element coupling algorithm.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"479 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116689556","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}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481386
R. Das, D. Lowther
The paper describes a novel approach based on the use of compact support radial basis functions for solving low frequency electromagnetic problems. The objective here is to study its effectiveness compared to the techniques that use global RBFs.
{"title":"Magnetic field computation using com pact support radial basis functions","authors":"R. Das, D. Lowther","doi":"10.1109/CEFC.2010.5481386","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481386","url":null,"abstract":"The paper describes a novel approach based on the use of compact support radial basis functions for solving low frequency electromagnetic problems. The objective here is to study its effectiveness compared to the techniques that use global RBFs.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123347587","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}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481661
P. di Barba, F. Freschi, M. E. Mognaschi, A. Pichiecchio, M. Repetto, A. Savini, A. Vultaggio
A field source reconstruction of the dipoles modeling the activated area of the brain while a subject performs the task of the voluntary motion of the hand is solved. Experimental data resulting from the integration of both EEG and fMRI are used.
{"title":"Field model of electrical activity of the brain during the hand movement: a source identification problem","authors":"P. di Barba, F. Freschi, M. E. Mognaschi, A. Pichiecchio, M. Repetto, A. Savini, A. Vultaggio","doi":"10.1109/CEFC.2010.5481661","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481661","url":null,"abstract":"A field source reconstruction of the dipoles modeling the activated area of the brain while a subject performs the task of the voluntary motion of the hand is solved. Experimental data resulting from the integration of both EEG and fMRI are used.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123930218","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}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481558
A. Modiri, K. Kiasaleh
In this paper, various microstrip antennas (MAs) are designed using a new version of binary Particle Swarm Optimization (BPSO) algorithm in which the velocity calculation is modified in order to arrive at an accelerated and robust search procedure, particularly for software defined applications.
{"title":"Efficient design of microstrip antennas using modified PSO algorithm","authors":"A. Modiri, K. Kiasaleh","doi":"10.1109/CEFC.2010.5481558","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481558","url":null,"abstract":"In this paper, various microstrip antennas (MAs) are designed using a new version of binary Particle Swarm Optimization (BPSO) algorithm in which the velocity calculation is modified in order to arrive at an accelerated and robust search procedure, particularly for software defined applications.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124129495","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}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481839
L. Strete, I. Husain, O. Cornea, I. Viorel
Direct and inverse analytical models of the switched reluctance motor (SRM) based on finite element method (FEM) results are presented in the paper. The models are obtained using three flux-current characteristics, which can be calculated from 2D-FEM or obtained on a test bench. The models can also be simplified for use in real time control. The model accuracy and versatility in characterizing the SRM behavior have been verified through simulation and test results.
{"title":"Direct and inverse analytical models of a switched reluctance motor","authors":"L. Strete, I. Husain, O. Cornea, I. Viorel","doi":"10.1109/CEFC.2010.5481839","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481839","url":null,"abstract":"Direct and inverse analytical models of the switched reluctance motor (SRM) based on finite element method (FEM) results are presented in the paper. The models are obtained using three flux-current characteristics, which can be calculated from 2D-FEM or obtained on a test bench. The models can also be simplified for use in real time control. The model accuracy and versatility in characterizing the SRM behavior have been verified through simulation and test results.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124247580","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}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481737
T. Sato, T. Todaka, M. Enokizono
To make clear iron loss distributions in a stator core of SPM motor under high flux density condition over 1.3T, the integral-type dynamic E&S modeling is employed. The magnetic property database for this analysis is newly prepared in the measurements of the vector magnetic properties of the core material under high flux density conditions up to 1.8T, and then the magnetic reluctivity and hysteresis coefficients of the integral-type dynamic E&S modeling are derived. The results show that there is an applicable region of the integral-type dynamic E&S modeling to obtain a good convergence. We also point out some problems encountered in applying integral-type dynamic E&S modeling.
{"title":"Magnetic characteristic analysis of SPM motor by means of dynamic E&S modeling","authors":"T. Sato, T. Todaka, M. Enokizono","doi":"10.1109/CEFC.2010.5481737","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481737","url":null,"abstract":"To make clear iron loss distributions in a stator core of SPM motor under high flux density condition over 1.3T, the integral-type dynamic E&S modeling is employed. The magnetic property database for this analysis is newly prepared in the measurements of the vector magnetic properties of the core material under high flux density conditions up to 1.8T, and then the magnetic reluctivity and hysteresis coefficients of the integral-type dynamic E&S modeling are derived. The results show that there is an applicable region of the integral-type dynamic E&S modeling to obtain a good convergence. We also point out some problems encountered in applying integral-type dynamic E&S modeling.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121520151","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}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481064
Jung Ho Lee, Seung Chul Lee, T. Lee
This paper deals with the PM performance evaluations in a pole changing memory motor (PCMM) using a coupled transient finite element method (FEM) and Preisach modeling, which is presented to analyze the magnetic characteristics of permanent magnets. The focus of this paper is the characteristics evaluation relative to magnetizing direction and the pole number of machine on re-demagnetization condition in a pole changing memory motor.
{"title":"Characteristics analysis in a pole changing memory motor using coupled FEM & Preisach modeling","authors":"Jung Ho Lee, Seung Chul Lee, T. Lee","doi":"10.1109/CEFC.2010.5481064","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481064","url":null,"abstract":"This paper deals with the PM performance evaluations in a pole changing memory motor (PCMM) using a coupled transient finite element method (FEM) and Preisach modeling, which is presented to analyze the magnetic characteristics of permanent magnets. The focus of this paper is the characteristics evaluation relative to magnetizing direction and the pole number of machine on re-demagnetization condition in a pole changing memory motor.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125243206","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}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481488
P. Kauffmann, V. Haguet, G. Reyne, B. Delinchant
Many Magnetic MEMS have been recently developed to manipulate spherical diamagnetic or superparamagnetic particles. Magnetic forces can be computed using the dipole method or the semi-numerical integral. However, these methods appear inaccurate or time consuming, respectively. This paper proposes a multipolar approach which provides a satisfying compromise between precision and rapidity to compute the magnetic force on linear magnetized beads. Gain in precision and CPU time will be detailed for water droplets levitating above micromagnets.
{"title":"Efficient multipoles modeling for linear magnetized beads manipulations","authors":"P. Kauffmann, V. Haguet, G. Reyne, B. Delinchant","doi":"10.1109/CEFC.2010.5481488","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481488","url":null,"abstract":"Many Magnetic MEMS have been recently developed to manipulate spherical diamagnetic or superparamagnetic particles. Magnetic forces can be computed using the dipole method or the semi-numerical integral. However, these methods appear inaccurate or time consuming, respectively. This paper proposes a multipolar approach which provides a satisfying compromise between precision and rapidity to compute the magnetic force on linear magnetized beads. Gain in precision and CPU time will be detailed for water droplets levitating above micromagnets.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128105295","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}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481628
A. Jarrah, S. Clénet, A. Benabou, R. Ramarotafika
The aim of this work is to study, using a statistical approach, the macroscopic behavior of a given number of anisotropic laminations, stacked randomly.
这项工作的目的是研究，使用统计方法，宏观行为的各向异性片的给定数量，随机堆叠。
{"title":"Statistical modeling of an anisotropic lamination stack","authors":"A. Jarrah, S. Clénet, A. Benabou, R. Ramarotafika","doi":"10.1109/CEFC.2010.5481628","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481628","url":null,"abstract":"The aim of this work is to study, using a statistical approach, the macroscopic behavior of a given number of anisotropic laminations, stacked randomly.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129249828","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}
Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481550
L. D. de Medeiros, M. T. de Melo, P. R. de Freitas, M. H. L. de Sousa, F. N. Fraga
This paper presents the behavior of a grounding mesh in presence of a high-frequency overvoltage transient caused by switch closing in electrical substations and atmospheric discharges. The simulation of the mesh is based on Transmission Line Method (TLM). The output of the simulation is the sum of induced and conducted currents caused by such high-frequency overvoltage input in some spot of the mesh. Thin wires are represented by nodes developed by Naylor and Christopoulos.
{"title":"Analysis of real overvoltage transient in a TLM-modeled","authors":"L. D. de Medeiros, M. T. de Melo, P. R. de Freitas, M. H. L. de Sousa, F. N. Fraga","doi":"10.1109/CEFC.2010.5481550","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481550","url":null,"abstract":"This paper presents the behavior of a grounding mesh in presence of a high-frequency overvoltage transient caused by switch closing in electrical substations and atmospheric discharges. The simulation of the mesh is based on Transmission Line Method (TLM). The output of the simulation is the sum of induced and conducted currents caused by such high-frequency overvoltage input in some spot of the mesh. Thin wires are represented by nodes developed by Naylor and Christopoulos.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129273892","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}
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