Pub Date : 2010-05-09DOI: 10.1109/CEFC.2010.5481792
Bruna A L da Silva, A. D’assunção
This work presents a characterization of a new monopole circular microstrip patch antenna with a conducting patch in the circular ring form for use in UWB systems. The influence of inserting both a rectangular slit in the ground plane and a parasitic element close to the circular conducting patch of the structure is investigated in order to improve the antenna impedance matching, for UWB applications. Ansoft HFSS® software is the simulation tool used to obtain numerical results for the return loss frequency behavior of the considered antenna. These results are compared to the measured ones obtained using a network analyzer.
{"title":"Analysis of monopole antennas for UWB systems with circular ring patch and parasitic element","authors":"Bruna A L da Silva, A. D’assunção","doi":"10.1109/CEFC.2010.5481792","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481792","url":null,"abstract":"This work presents a characterization of a new monopole circular microstrip patch antenna with a conducting patch in the circular ring form for use in UWB systems. The influence of inserting both a rectangular slit in the ground plane and a parasitic element close to the circular conducting patch of the structure is investigated in order to improve the antenna impedance matching, for UWB applications. Ansoft HFSS® software is the simulation tool used to obtain numerical results for the return loss frequency behavior of the considered antenna. These results are compared to the measured ones obtained using a network analyzer.","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":"121901425","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.2010.5481286
Jang-young Choi, K. Ko, S. Jang
This paper deals with experimental works and analysis for influence of stator slot number on performance of interior PM (IPM) motor. First, for a conventional 6-pole IPM rotor, stators with 18, 27 and 36 slots satisfied with same required and restricted conditions are designed. And then, performances and parameters of each IPM motor such as cogging torque, torque ripple, d- and q- axis inductance, total harmonic distortion (THD) of back-emf, etc. are investigated using 2-d finite element analyses (FEA). Finally, test results such as d- and q- axis inductance, back-emf and efficiency measurements are given to confirm analysis results. It is concluded from the results obtained by this work that the influence of stator slot number on IPM motor behavior is very significant.
{"title":"Experimental works and analysis for influence of stator slot number on performance of interior PM motor","authors":"Jang-young Choi, K. Ko, S. Jang","doi":"10.1109/CEFC.2010.5481286","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481286","url":null,"abstract":"This paper deals with experimental works and analysis for influence of stator slot number on performance of interior PM (IPM) motor. First, for a conventional 6-pole IPM rotor, stators with 18, 27 and 36 slots satisfied with same required and restricted conditions are designed. And then, performances and parameters of each IPM motor such as cogging torque, torque ripple, d- and q- axis inductance, total harmonic distortion (THD) of back-emf, etc. are investigated using 2-d finite element analyses (FEA). Finally, test results such as d- and q- axis inductance, back-emf and efficiency measurements are given to confirm analysis results. It is concluded from the results obtained by this work that the influence of stator slot number on IPM motor behavior is very significant.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"73 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":"122002686","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}
A. Serres, G. Fontgalland, J. D. de Farias, H. Baudrand
In this article, it is presented an analytical method to model a source with left-hand circular polarization and the space distribution of the waves through a dielectric layer. The model is based on the wave concept. Mathematical expressions are formulated in the frequency domain. An inverse Fourier modal transform is applied to obtain the 3-D behaviors of the waves on the surface of the layer. The effects of the sources localization on the electromagnetic coupling are presented.
{"title":"Electromagnetic coupling through a dielectric layer with a left-hand circular polarization","authors":"A. Serres, G. Fontgalland, J. D. de Farias, H. Baudrand","doi":"10.1002/mop.27001","DOIUrl":"https://doi.org/10.1002/mop.27001","url":null,"abstract":"In this article, it is presented an analytical method to model a source with left-hand circular polarization and the space distribution of the waves through a dielectric layer. The model is based on the wave concept. Mathematical expressions are formulated in the frequency domain. An inverse Fourier modal transform is applied to obtain the 3-D behaviors of the waves on the surface of the layer. The effects of the sources localization on the electromagnetic coupling are presented.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"69 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":"124510132","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.2010.5481170
X. Ni, A. Kildishev, V. Shalaev
An approach for calculating the fields radiated from either electric or magnetic dipoles placed inside or at the surface of a multilayer structure arranged of arbitrary elemental materials, including metamaterials, is presented. A combination of Green's function technique and Spatial Harmonic Analysis method is used. The electromagnetic behavior of the dipole sources in the vicinity of the metamaterial surface is studied. This approach is applicable to the important case when the near field of fluorescent molecules is coupled to a multilayer single-periodic or bi-periodic nanostructure.
{"title":"Analyzing the effect of a metamaterial surface on electric and magnetic dipole emissions using Green's function and spatial harmonic analysis techniques","authors":"X. Ni, A. Kildishev, V. Shalaev","doi":"10.1109/CEFC.2010.5481170","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481170","url":null,"abstract":"An approach for calculating the fields radiated from either electric or magnetic dipoles placed inside or at the surface of a multilayer structure arranged of arbitrary elemental materials, including metamaterials, is presented. A combination of Green's function technique and Spatial Harmonic Analysis method is used. The electromagnetic behavior of the dipole sources in the vicinity of the metamaterial surface is studied. This approach is applicable to the important case when the near field of fluorescent molecules is coupled to a multilayer single-periodic or bi-periodic nanostructure.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"17 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":"125031633","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.2010.5481664
K. Laskaris, A. Kladas
This paper introduces a geometry optimization method enabling to derive the optimal permanent magnet shape for high efficiency motors over a wide speed range. Such a methodology searches for the compromise between core loss and torque, according to the application speed requirements by using an appropriate composite cost function.
{"title":"Permanent magnet shape optimization for high efficiency electric traction motors","authors":"K. Laskaris, A. Kladas","doi":"10.1109/CEFC.2010.5481664","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481664","url":null,"abstract":"This paper introduces a geometry optimization method enabling to derive the optimal permanent magnet shape for high efficiency motors over a wide speed range. Such a methodology searches for the compromise between core loss and torque, according to the application speed requirements by using an appropriate composite cost function.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"23 8 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":"129341074","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.2010.5481304
G. Hui, Yao Yingying, Fang Youtong, Y. Shiyou
To accurately simulate the operating charcteristics of turbine generator running after loss of excitation, this paper established a field-circuit-motion direct coupled FEA model, obtained stator terminal voltage, stator current, speed and other variables waveforms after loss of excitation, as well as the distribution of rotor eddy current; through indirect magneticthermal coupling model to achieve the temperature distributed in the rotor. A 1000MW turbine generator loss of excitation is calculated, through the rotor temperature rise as well as the fluctuations of active and reactive power, relevant conclusions for such fault operation of generator are given.
{"title":"The dynamic performance and temperature distribution of turbine generator under loss of excitation by using coupled FE analysis","authors":"G. Hui, Yao Yingying, Fang Youtong, Y. Shiyou","doi":"10.1109/CEFC.2010.5481304","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481304","url":null,"abstract":"To accurately simulate the operating charcteristics of turbine generator running after loss of excitation, this paper established a field-circuit-motion direct coupled FEA model, obtained stator terminal voltage, stator current, speed and other variables waveforms after loss of excitation, as well as the distribution of rotor eddy current; through indirect magneticthermal coupling model to achieve the temperature distributed in the rotor. A 1000MW turbine generator loss of excitation is calculated, through the rotor temperature rise as well as the fluctuations of active and reactive power, relevant conclusions for such fault operation of generator are given.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"36 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":"129831135","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.2010.5481726
K. Jang, J. Kim, Ho-Jin An, Gyu-Tak Kim
To reduce the detent force by end effect, the auxiliary core which has the independent magnetic circuit is proposed in this paper. The auxiliary core is designed by the DOE (Design of Experiment) and FEA. And the prototype machine of auxiliary core is made and experimented. To demonstrate reduction effect of the detent force by the auxiliary core, the experimental results are compared with the analyzed results.
{"title":"Optimal design of auxiliary core to reduce detent force according to end effect in PMLSM","authors":"K. Jang, J. Kim, Ho-Jin An, Gyu-Tak Kim","doi":"10.1109/CEFC.2010.5481726","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481726","url":null,"abstract":"To reduce the detent force by end effect, the auxiliary core which has the independent magnetic circuit is proposed in this paper. The auxiliary core is designed by the DOE (Design of Experiment) and FEA. And the prototype machine of auxiliary core is made and experimented. To demonstrate reduction effect of the detent force by the auxiliary core, the experimental results are compared with the analyzed results.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"36 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":"131735779","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.2010.5481321
S. Jang, Yu-Seop Park, K. Ko, Ji-Hoon Park, Jung-Ho Lee
For the dynamic analysis of Linear Induction Motor (LIM), the derivation of its equivalent circuit parameters are essential, so this paper applies those parameters derived by electro-magnetic field theory. In case of LIM, the value of parameters is different according to its secondary structure, the application of electro-magnetic field theory is not avoidable. Using those parameters and d-q transformation, the dynamic modeling and simulation of LIM applied to a magnetic levitation train car are performed considering load conditions and suggested jerk scenario to ensure the passengers' safety.
{"title":"Dynamic characteristics considering vehicle load and jerk condition of Linear Induction Motor by using equivalent circuit with electro-magnetic field theory","authors":"S. Jang, Yu-Seop Park, K. Ko, Ji-Hoon Park, Jung-Ho Lee","doi":"10.1109/CEFC.2010.5481321","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481321","url":null,"abstract":"For the dynamic analysis of Linear Induction Motor (LIM), the derivation of its equivalent circuit parameters are essential, so this paper applies those parameters derived by electro-magnetic field theory. In case of LIM, the value of parameters is different according to its secondary structure, the application of electro-magnetic field theory is not avoidable. Using those parameters and d-q transformation, the dynamic modeling and simulation of LIM applied to a magnetic levitation train car are performed considering load conditions and suggested jerk scenario to ensure the passengers' safety.","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":"129265086","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.2010.5481325
L. dos Santos Coelho, V. Mariani, P. Alotto
Differential evolution is an evolutionary algorithm over continuous spaces which incorporates an efficient way of self-adapting mutation using small populations. This paper uses a brushless DC wheel motor benchmark problem to investigate the performance of Differential Evolution. Results are competitive with those of other optimization methods.
{"title":"Improved differential evolution optimization algorithm for the design of a brushless dc wheel motor","authors":"L. dos Santos Coelho, V. Mariani, P. Alotto","doi":"10.1109/CEFC.2010.5481325","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481325","url":null,"abstract":"Differential evolution is an evolutionary algorithm over continuous spaces which incorporates an efficient way of self-adapting mutation using small populations. This paper uses a brushless DC wheel motor benchmark problem to investigate the performance of Differential Evolution. Results are competitive with those of other optimization methods.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"53 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":"125487298","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.2010.5481529
L. Meng, K. Cheng
This paper investigates an analytical solution for describing the diffusion of the eddy currents and the impact of electromagnetic proximity effects among the coils in the domestic induction heating system (IHS) with distributed planar spiral multi-coils. The comparison of the proposed analytical solution and the numerical computation results indicates that the presented method can be applied expediently and effectively in the computation of eddy-current problem in multi-coils IHS.
{"title":"Compound coordinates-based analytical solution for eddy-current problem in induction heating system with distributed planar spiral multi-coils","authors":"L. Meng, K. Cheng","doi":"10.1109/CEFC.2010.5481529","DOIUrl":"https://doi.org/10.1109/CEFC.2010.5481529","url":null,"abstract":"This paper investigates an analytical solution for describing the diffusion of the eddy currents and the impact of electromagnetic proximity effects among the coils in the domestic induction heating system (IHS) with distributed planar spiral multi-coils. The comparison of the proposed analytical solution and the numerical computation results indicates that the presented method can be applied expediently and effectively in the computation of eddy-current problem in multi-coils IHS.","PeriodicalId":148739,"journal":{"name":"Digests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation","volume":"13 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":"125562025","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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