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2008 18th International Conference on Electrical Machines最新文献

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Formulation, finite-element modeling and winding factors of non-overlap winding permanent magnet machines 无重叠绕组永磁电机的配方、有限元建模及绕组因素
2008 18th International Conference on Electrical Machines Pub Date : 2008-09-01 DOI: 10.1109/ICELMACH.2008.4799996
M. Kamper, A. Rix, Dominic A. Wills, Rong-Jie Wang
{"title":"Formulation, finite-element modeling and winding factors of non-overlap winding permanent magnet machines","authors":"M. Kamper, A. Rix, Dominic A. Wills, Rong-Jie Wang","doi":"10.1109/ICELMACH.2008.4799996","DOIUrl":"https://doi.org/10.1109/ICELMACH.2008.4799996","url":null,"abstract":"The layouts, formulation and winding factors of iron-and air-cored non-overlap winding permanent magnet machines are considered in this paper. The winding formulation gives information about the use of negative periodical boundary conditions in the finite element analysis. Particular attention is given to air-cored non-overlap windings, with entirely different results regarding optimal slot-pole combinations.","PeriodicalId":416125,"journal":{"name":"2008 18th International Conference on Electrical Machines","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124646157","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: 20
Analytical modelling of unbalanced magnetic pull in isotropic electrical machines 各向同性电机中不平衡磁拉力的解析建模
2008 18th International Conference on Electrical Machines Pub Date : 2008-09-01 DOI: 10.1109/ICELMACH.2008.4799998
A. Di Gerlando, G. Foglia, R. Perini
{"title":"Analytical modelling of unbalanced magnetic pull in isotropic electrical machines","authors":"A. Di Gerlando, G. Foglia, R. Perini","doi":"10.1109/ICELMACH.2008.4799998","DOIUrl":"https://doi.org/10.1109/ICELMACH.2008.4799998","url":null,"abstract":"The phenomenon of the unbalanced magnetic pull is analytically modelled, referring to cylindrical rotor A.C. machines. Even if under some simplifications (sinusoidal space distribution of the current density, no slotting, no saturation, no parallel paths), various compact and significant expressions of field and force are obtained, for any number of pole pairs: the model is based on a critical re-formulation of the air-gap m.m.f., by discussing the homopolar term. Some FEM simulations confirm the soundness of the proposed approach.","PeriodicalId":416125,"journal":{"name":"2008 18th International Conference on Electrical Machines","volume":"434 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123610317","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: 10
Engineering considerations on additional iron losses due to rotational fields and sheet cutting 旋转场和薄板切割引起的额外铁损失的工程考虑
2008 18th International Conference on Electrical Machines Pub Date : 2008-09-01 DOI: 10.1109/ICELMACH.2008.4800071
Yujing Liu, S.K. Kashif, A. Sohail
{"title":"Engineering considerations on additional iron losses due to rotational fields and sheet cutting","authors":"Yujing Liu, S.K. Kashif, A. Sohail","doi":"10.1109/ICELMACH.2008.4800071","DOIUrl":"https://doi.org/10.1109/ICELMACH.2008.4800071","url":null,"abstract":"The influences of rotational magnetic fields and sheet cutting on core iron losses in electrical machines are investigated. The engineering methods to calculate these small losses are evaluated and developed. The loss levels respected to total iron losses are computed for different machine size.","PeriodicalId":416125,"journal":{"name":"2008 18th International Conference on Electrical Machines","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122599604","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: 29
Strand-level proximity losses in PM machines designed for high-speed operation 为高速运行而设计的永磁电机的线级接近损耗
2008 18th International Conference on Electrical Machines Pub Date : 2008-09-01 DOI: 10.1109/ICELMACH.2008.4800172
P. Reddy, Z.Q. Zhu, Seok-Hee Han, T. Jahns
{"title":"Strand-level proximity losses in PM machines designed for high-speed operation","authors":"P. Reddy, Z.Q. Zhu, Seok-Hee Han, T. Jahns","doi":"10.1109/ICELMACH.2008.4800172","DOIUrl":"https://doi.org/10.1109/ICELMACH.2008.4800172","url":null,"abstract":"The stator windings of surface PM synchronous machines with fractional-slot concentrated windings are vulnerable to high proximity losses when operated at high speeds due to their typically high pole numbers and resulting high electrical frequencies. The limitations of an existing 1-D flux density model are demonstrated and an improved 2-D analytical model is introduced for estimating flux densities and stand-level proximity losses inside the slots. The 2-D analytical model is shown to provide good matches with finite element analysis for the predicted flux densities and proximity losses inside a rectangular slot with a variable slot opening and electrical frequency.","PeriodicalId":416125,"journal":{"name":"2008 18th International Conference on Electrical Machines","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122752323","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: 59
A new MPPT method for Photovoltaic generation systems based on Hill Climbing algorithm 一种基于爬坡算法的光伏发电系统MPPT新方法
2008 18th International Conference on Electrical Machines Pub Date : 2008-09-01 DOI: 10.1109/ICELMACH.2008.4800248
D. Peftitsis, G. Adamidis, A. Balouktsis
{"title":"A new MPPT method for Photovoltaic generation systems based on Hill Climbing algorithm","authors":"D. Peftitsis, G. Adamidis, A. Balouktsis","doi":"10.1109/ICELMACH.2008.4800248","DOIUrl":"https://doi.org/10.1109/ICELMACH.2008.4800248","url":null,"abstract":"This paper presents a new method for MPPT in photovoltaic systems based on \"Hill Climbing\" algorithm. According to the proposed method cube of slope of power vs. voltage (P-V) curve is calculated in each calculation step. Through this calculation both the direction of photovoltaic's (PV) voltage change and the step size of this change are resulted without making any slope or sign control. Moreover, a way to apply this method in PV systems which are consisted of Ns in series and Np in parallel connection PV arrays with high installed nominal power is proposed. A DC to DC buck-boost converter is used in connection with PV arrays for achieving operation in maximum power point and keeping output voltage constant. The whole system is simulated using Matlab/Simulink and simulation results are presented and analyzed.","PeriodicalId":416125,"journal":{"name":"2008 18th International Conference on Electrical Machines","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122812230","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: 29
Dynamic analysis of wind turbines considering new grid code requirements 考虑新电网规范要求的风力发电机动力分析
2008 18th International Conference on Electrical Machines Pub Date : 2008-09-01 DOI: 10.1109/ICELMACH.2008.4799899
M. Salles, K. Hameyer, J. Cardoso, W. Freitas
{"title":"Dynamic analysis of wind turbines considering new grid code requirements","authors":"M. Salles, K. Hameyer, J. Cardoso, W. Freitas","doi":"10.1109/ICELMACH.2008.4799899","DOIUrl":"https://doi.org/10.1109/ICELMACH.2008.4799899","url":null,"abstract":"E.ON Netz new grid code requires the ability from the wind turbines to remain connected to the network when terminal voltage level drops to zero for at least 150 ms. Moreover, wind turbines must also contribute with voltage regulation during and after grid faults. A comparative study analyzing the dynamic behavior of conventional versions of wind turbines based on doubly-fed induction generator and on permanent magnet synchronous generator is presented in this paper. Computational simulations have showed that wind turbine based on PMSG can contribute with more injection of reactive power to the network. The converters nominal power and the strategy of its current controllers can impact the dynamic behavior of wind turbines.","PeriodicalId":416125,"journal":{"name":"2008 18th International Conference on Electrical Machines","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123887651","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: 15
Some practical aspects of eccentricity detection in induction motors for different supply conditions 不同供电条件下感应电动机偏心检测的一些实用问题
2008 18th International Conference on Electrical Machines Pub Date : 2008-09-01 DOI: 10.1109/ICELMACH.2008.4800047
D. Morinigo-Sotelo, L. García-Escudero, Ó. Duque-Pérez, M. Perez-Alonso
{"title":"Some practical aspects of eccentricity detection in induction motors for different supply conditions","authors":"D. Morinigo-Sotelo, L. García-Escudero, Ó. Duque-Pérez, M. Perez-Alonso","doi":"10.1109/ICELMACH.2008.4800047","DOIUrl":"https://doi.org/10.1109/ICELMACH.2008.4800047","url":null,"abstract":"In this paper, we advance results of an ongoing investigation related with the detection of static and dynamic eccentricity in cage induction motors fed by frequency converter using line current spectral analysis. A statistical analysis of the results obtained with the laboratory motors for different supply conditions has been carried out. These results allow us to present some preliminary conclusions.","PeriodicalId":416125,"journal":{"name":"2008 18th International Conference on Electrical Machines","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125553675","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: 3
Optimization of big power low voltage induction motor using Hybrid Optimization Algorithms 大功率低压感应电动机的混合优化算法
2008 18th International Conference on Electrical Machines Pub Date : 2008-09-01 DOI: 10.1109/ICELMACH.2008.4799968
S. Lachecinski, M. Dems
{"title":"Optimization of big power low voltage induction motor using Hybrid Optimization Algorithms","authors":"S. Lachecinski, M. Dems","doi":"10.1109/ICELMACH.2008.4799968","DOIUrl":"https://doi.org/10.1109/ICELMACH.2008.4799968","url":null,"abstract":"This paper presents results of optimization calculation of the big power low voltage induction motor. The results received by new three hybrid algorithms: GA-R, ESmu+lambda-R, PSO-R were compared. These hybrid algorithms were created by connecting three algorithms of global optimization, i.e. genetic algorithm GA, evolutionary strategy ES and particle swarm optimization PSO with a suitable modified Rosenbrock's method.","PeriodicalId":416125,"journal":{"name":"2008 18th International Conference on Electrical Machines","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126115694","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: 8
An optimization of an electromagnetic liquid valve 电磁液阀的优化设计
2008 18th International Conference on Electrical Machines Pub Date : 2008-09-01 DOI: 10.1109/ICELMACH.2008.4800041
B. Schinnerl, D. Gerling
{"title":"An optimization of an electromagnetic liquid valve","authors":"B. Schinnerl, D. Gerling","doi":"10.1109/ICELMACH.2008.4800041","DOIUrl":"https://doi.org/10.1109/ICELMACH.2008.4800041","url":null,"abstract":"For some years many manufacturers have been developing new electromagnetic valves instead of hydraulic or pneumatic applications. In this article an existing design of an electromagnetic valve is optimized. The improvement is described step by step and the result is shown. Optimizations usually tend to low price, low weight and high power density. In this case low weight and high power density are the main goals.","PeriodicalId":416125,"journal":{"name":"2008 18th International Conference on Electrical Machines","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126185219","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
Two-dimensional analytical model for eddy-current loss calculation in the magnets and solid rotor yokes of permanent magnet synchronous machines 永磁同步电机磁体和固体转子轭中涡流损耗计算的二维解析模型
2008 18th International Conference on Electrical Machines Pub Date : 2008-09-01 DOI: 10.1109/ICELMACH.2008.4799997
R. Nuscheler, Fachgebiet Energiewandlungstechnik
{"title":"Two-dimensional analytical model for eddy-current loss calculation in the magnets and solid rotor yokes of permanent magnet synchronous machines","authors":"R. Nuscheler, Fachgebiet Energiewandlungstechnik","doi":"10.1109/ICELMACH.2008.4799997","DOIUrl":"https://doi.org/10.1109/ICELMACH.2008.4799997","url":null,"abstract":"This paper presents a two-dimensional analytical calculation method for the eddy-current problem in the rotors of permanent magnet synchronous machines. The method takes into account the reaction field of the induced eddy-currents and is, therefore, not restricted to cases where the skin depth is large compared to the geometrical dimensions of the magnets and the rotor yoke. We apply the method to two typical machines with concentrated stator windings and discuss those design aspects, which influence the rotor loss in a relevant manner.","PeriodicalId":416125,"journal":{"name":"2008 18th International Conference on Electrical Machines","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126278468","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: 18
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