Pub Date : 2004-08-15DOI: 10.1109/CIPE.2004.1428114
S. Rutenkroger, B. Deken, S. Pekarek
A method to reduce the order of finite element (FE) based models of electromagnetic components is presented. In the technique proposed, a full order FE model is transformed into a user specified (or error determined) reduced order system using empirical eigenvectors (EE). The EE method uses an observation of the response of a full model to construct a reduced basis that replicates a full system. Nonlinear attributes resulting from saturation are naturally preserved in the reduction, while the numerical effort required to model the component is greatly reduced. The EE method has been applied to model an iron-core toroidal inductor. A four-fold increase in the speed of computation has been obtained for a linear, fixed time step analysis and a seventy-one fold increase for a nonlinear, variable time step analysis, without observable loss in accuracy.
{"title":"Reduction of model dimension in nonlinear finite element approximations of electromagnetic systems","authors":"S. Rutenkroger, B. Deken, S. Pekarek","doi":"10.1109/CIPE.2004.1428114","DOIUrl":"https://doi.org/10.1109/CIPE.2004.1428114","url":null,"abstract":"A method to reduce the order of finite element (FE) based models of electromagnetic components is presented. In the technique proposed, a full order FE model is transformed into a user specified (or error determined) reduced order system using empirical eigenvectors (EE). The EE method uses an observation of the response of a full model to construct a reduced basis that replicates a full system. Nonlinear attributes resulting from saturation are naturally preserved in the reduction, while the numerical effort required to model the component is greatly reduced. The EE method has been applied to model an iron-core toroidal inductor. A four-fold increase in the speed of computation has been obtained for a linear, fixed time step analysis and a seventy-one fold increase for a nonlinear, variable time step analysis, without observable loss in accuracy.","PeriodicalId":137483,"journal":{"name":"2004 IEEE Workshop on Computers in Power Electronics, 2004. Proceedings.","volume":"637 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116084594","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 : 2004-08-15DOI: 10.1109/CIPE.2004.1428142
N. Benavides, P. Chapman
Modeling of power electronic converters does not lend itself to many traditional circuit simulators such as SPICE. The state equations of a converter change with switching behavior, also called events, which must be determined using an iterative solution. Diode commutation is a prime example that occurs in nearly all complex power electronic circuits. The language examined in this paper, Modelica, was developed for solution of systems with discrete events such as switching. A multiple-input, multiple-output (MIMO) flyback converter has been used as an example, and compared to experimental results.
{"title":"Object oriented modeling of a multiple-input multiple-output flyback converter in Dymola","authors":"N. Benavides, P. Chapman","doi":"10.1109/CIPE.2004.1428142","DOIUrl":"https://doi.org/10.1109/CIPE.2004.1428142","url":null,"abstract":"Modeling of power electronic converters does not lend itself to many traditional circuit simulators such as SPICE. The state equations of a converter change with switching behavior, also called events, which must be determined using an iterative solution. Diode commutation is a prime example that occurs in nearly all complex power electronic circuits. The language examined in this paper, Modelica, was developed for solution of systems with discrete events such as switching. A multiple-input, multiple-output (MIMO) flyback converter has been used as an example, and compared to experimental results.","PeriodicalId":137483,"journal":{"name":"2004 IEEE Workshop on Computers in Power Electronics, 2004. Proceedings.","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134332025","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 : 2004-08-15DOI: 10.1109/CIPE.2004.1428118
J. M. Ortiz-Rodríguez, A. Hefner, D. Berning, M. Volez-Reyes, M. Hernindez-Mora, G. Gonzalez
A thermal model for the CPES IPEM Gen. II is presented. The selected approach is the simulation of the thermal behavior of an experimental IPEM testbed using the ID finite difference method. An equivalent electrical network representation of the thermal behavior of the IPEM is developed using a ID finite approach. The SABER circuit simulation tool is used to verify the behavior of our network model and compare its results with previously acquired temperature measurements from the experimental testbed. Both experimental and simulated responses are presented and compared.
介绍了CPES IPEM Gen. II的热模型。所选择的方法是使用ID有限差分法模拟实验IPEM试验台的热行为。使用ID有限方法开发了IPEM热行为的等效电网络表示。使用SABER电路仿真工具验证了我们的网络模型的行为，并将其结果与先前从实验测试平台获得的温度测量结果进行了比较。给出了实验响应和模拟响应，并进行了比较。
{"title":"Lumped-parameter thermal modeling of an IPEM using thermal component models","authors":"J. M. Ortiz-Rodríguez, A. Hefner, D. Berning, M. Volez-Reyes, M. Hernindez-Mora, G. Gonzalez","doi":"10.1109/CIPE.2004.1428118","DOIUrl":"https://doi.org/10.1109/CIPE.2004.1428118","url":null,"abstract":"A thermal model for the CPES IPEM Gen. II is presented. The selected approach is the simulation of the thermal behavior of an experimental IPEM testbed using the ID finite difference method. An equivalent electrical network representation of the thermal behavior of the IPEM is developed using a ID finite approach. The SABER circuit simulation tool is used to verify the behavior of our network model and compare its results with previously acquired temperature measurements from the experimental testbed. Both experimental and simulated responses are presented and compared.","PeriodicalId":137483,"journal":{"name":"2004 IEEE Workshop on Computers in Power Electronics, 2004. Proceedings.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131728902","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 : 2004-08-15DOI: 10.1109/CIPE.2004.1428145
P. Chapman
An approach for simulating linear switched networks, such as certain models of power converters, is given. The approach applies the principle of multi-resolution simulation. A full, detailed model is constructed from which a reduced order model is automatically extracted. The bandwidth of the reduced order model can be specified and changed at the users' discretion, even during a simulation run, yielding multiple resolutions and simulation speeds. The method is demonstrated on a simple power converter circuit.
{"title":"Multi-resolution switched system modeling","authors":"P. Chapman","doi":"10.1109/CIPE.2004.1428145","DOIUrl":"https://doi.org/10.1109/CIPE.2004.1428145","url":null,"abstract":"An approach for simulating linear switched networks, such as certain models of power converters, is given. The approach applies the principle of multi-resolution simulation. A full, detailed model is constructed from which a reduced order model is automatically extracted. The bandwidth of the reduced order model can be specified and changed at the users' discretion, even during a simulation run, yielding multiple resolutions and simulation speeds. The method is demonstrated on a simple power converter circuit.","PeriodicalId":137483,"journal":{"name":"2004 IEEE Workshop on Computers in Power Electronics, 2004. Proceedings.","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122096784","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 : 2004-08-15DOI: 10.1109/CIPE.2004.1428112
N. Pongratananukul, T. Kasparis
The paper describes a tool developed to automate the study of solar array configurations using a general-purpose simulator such as Spice. The main advantage of the proposed method is that studies can be done for any solar array configuration formed from elementary models of solar cell units. Hierarchical structure of solar cell elements with semiconductor detail allows simulations of electrical properties as well as evaluation of environmental conditions impact. Application examples such as the effect of unequal illumination on various array interconnections and the mismatch of solar cells are presented to demonstrate the usefulness of the tool. The automated process eases investigation of large system and worst-case study for given environmental scenarios.
{"title":"Tool for automated simulation of solar arrays using general-purpose simulators","authors":"N. Pongratananukul, T. Kasparis","doi":"10.1109/CIPE.2004.1428112","DOIUrl":"https://doi.org/10.1109/CIPE.2004.1428112","url":null,"abstract":"The paper describes a tool developed to automate the study of solar array configurations using a general-purpose simulator such as Spice. The main advantage of the proposed method is that studies can be done for any solar array configuration formed from elementary models of solar cell units. Hierarchical structure of solar cell elements with semiconductor detail allows simulations of electrical properties as well as evaluation of environmental conditions impact. Application examples such as the effect of unequal illumination on various array interconnections and the mismatch of solar cells are presented to demonstrate the usefulness of the tool. The automated process eases investigation of large system and worst-case study for given environmental scenarios.","PeriodicalId":137483,"journal":{"name":"2004 IEEE Workshop on Computers in Power Electronics, 2004. Proceedings.","volume":"5 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114020837","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 : 1900-01-01DOI: 10.1109/CIPE.2004.1428132
J. van den Keybus, B. Bolsens, K. De Brabandere, J. Driesen
This paper describes a rapid development system that was used to speed up implementation and testing of a number of grid-coupled power electronic systems. The system uses a fully software reconfigurable processing core based on a powerful DSP and FPGA and a limited set of well-specified functional hardware blocks. Three examples using the same hardware in diverse areas of power electronic control demonstrate that this technique allows the implementation of demanding state-of-the-art power electronics systems, with the important benefit of a much reduced development time and increased reliability. It also proves to be an excellent tool in power electronics courses.
{"title":"Using a fully digital rapid prototype platform in grid-coupled power electronics applications","authors":"J. van den Keybus, B. Bolsens, K. De Brabandere, J. Driesen","doi":"10.1109/CIPE.2004.1428132","DOIUrl":"https://doi.org/10.1109/CIPE.2004.1428132","url":null,"abstract":"This paper describes a rapid development system that was used to speed up implementation and testing of a number of grid-coupled power electronic systems. The system uses a fully software reconfigurable processing core based on a powerful DSP and FPGA and a limited set of well-specified functional hardware blocks. Three examples using the same hardware in diverse areas of power electronic control demonstrate that this technique allows the implementation of demanding state-of-the-art power electronics systems, with the important benefit of a much reduced development time and increased reliability. It also proves to be an excellent tool in power electronics courses.","PeriodicalId":137483,"journal":{"name":"2004 IEEE Workshop on Computers in Power Electronics, 2004. Proceedings.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129342218","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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