| 1. |
- Antonini, Giulio, et al.
(författare)
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A comparative study of PEEC circuit elements computation
- 2003
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Ingår i: IEEE International Symposium on Electromagnetic Compatibility. - Piscataway, NJ : IEEE Communications Society. - 0780377796 ; , s. 810-813
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Konferensbidrag (refereegranskat)abstract
- A key use of the PEEC method is the solution of combined electromagnetic and circuit problems as they occur in many situations in todays very large scale integrated circuits (VLSI) and systems. An important aspect of this approach is the fast and accurate computation of PEEC circuit matrix elements, the partial inductances and normalized coefficients of potential. Recently, fast multipole methods (FMM) have been applied to the PEEC method in the frequency domain as a way to speed up the solution. In this paper, we consider the fast evaluation of the PEEC circuit matrix elements by two different methods, a matrix version of the (FMM) PEEC method and a method, which we call the fast multi-function (FMF) PEEC approach. In this technique, the matrix coefficients are evaluated using analytical functions approximation of the coefficients in combination with a proper choice of numerical quadrature formulas.
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| 2. |
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| 3. |
- Antonini, Giulio, et al.
(författare)
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Parallel waveform relaxation and matrix solution for large PEEC model problems
- 2007
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Ingår i: 2007 IEEE Electrical Performance of Electronic Packaging. - : IEEE Communications Society. - 9781424408832 ; , s. 241-244
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Konferensbidrag (refereegranskat)abstract
- Excessive compute time is becoming a key problem for high performance system modeling as the complexity of the electromagnetic and circuit models are increasing. At the same time the PEEC models are locally becoming more complex with the increased importance of dielectric and skin-effect losses. Fortunately, parallel processing removes the restriction on the availability of compute resources. In this paper,we consider a combined approach where WR is used for the predominant weak coupling while a Gaussian matrix solver is used for the parallelization of the strongly coupled parts of the overall system.
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| 4. |
- Antonini, Giulio, et al.
(författare)
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PEEC development road map 2007
- 2007
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- A road map for the long term development of the partial element equivalent circuit (PEEC) method is presented. Emerging areas are pointed out together with a solution strategy. Special attention is given to speed up approaches, mesh generation, and time domain stability. The purpose with the road map is to facilitate a unified development of the method into an electromagnetic modeling method suitable for incorporation in integrated analysis tools for engineers for electromagnetic compatibility and electromagnetic interference purpose.
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| 5. |
- Antonini, G., et al.
(författare)
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PEEC modeling of automotive electromagnetic problems
- 2006
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Ingår i: Proceedings of the International Conference of Numerical Analysis and Applied Mathematics. - : John Wiley & Sons. - 352740743X
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Konferensbidrag (refereegranskat)
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| 6. |
- Antonini, G., et al.
(författare)
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PEEC modeling of automotive electromagnetic problems
- 2008
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Ingår i: Applied Computational Electromagnetics Society Newsletter. - 1056-9170. ; 23:1, s. 39-50
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents the combination of the nonorthogonal Partial Element Equivalent Circuit (PEEC) models and interconnect structures through a macromodel approach for the analysis of automotive electromagnetic problems. The applications are within automotive computational electromagnetics due to the typical combination of cable harnesses and chassis structures. It is shown that PEEC-based solvers are capable of handling electrically large problems with high geometrical complexity for detailed analysis in both the time- and frequency- domain with attached multi-conductor transmission lines.
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| 7. |
- Antonini, Giulio, et al.
(författare)
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Waveform relaxation for the parallel solution of large PEEC model problems
- 2007
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Ingår i: 2007 IEEE International Symposium on Electromagnetic Compatibility. - Piscataway, NJ : IEEE Communications Society. - 1424413508
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Konferensbidrag (refereegranskat)abstract
- The solution of large 3D electromagnetic models is important for the modeling of a multitude of EMC, PI and SI problems. In this paper, we explore new algorithms for the parallel solution of large time domain 3D electromagnetic problems. Our approach is to use a volume Partial Element Equivalent Circuit (PEEC) electromagnetic formulation in combination with a Waveform Relaxation (WR) algorithm. In WR, we split the system into smaller subsystems and we break weak couplings so that the problem can be solved iteratively. WR has been used to solve a multitude of different problems. It is especially suited for parallel processing due to its favorable compute time to communication ratio. We consider a specific example for the application of WR to PEEC models.
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| 8. |
- Daroui, Danesh, et al.
(författare)
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Projekt: Kretsbaserad lösare för elektromagnetisk analys av kraftelektroniksystem- Applikation mot IGBTmoduler
- 2007
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Annan publikation (populärvet., debatt m.m.)abstract
- Projektet syftar till att accelerera och adaptera den programvara, MultiPEEC,som ingick i ELEKTRA-projekt 36021 för att möjliggöra studier avelektromagnetiska effekter i avancerade kraftelektroniksystem.Programvaran bygger på en långsiktig forskningssatsning på Luleå tekniskauniversitet med syfte att kombinera lösningen av elektriska kretsar ochelektromagnetiska effekter i samma miljö med hjälp av en ekvivalent-kretsmetod(PEEC).I första delen av projektet verifierades, optimerades och stabiliseradesprogramvaran i ett mycket nära samarbete med ABB CRC. I den föreslagnaandra delen av projektet kommer programvaran att massivt accelereras föratt möjliggöra detaljstudier av elektromagnetiska effekter i bus bars ochIGBT moduler. För bus bars är det främst studier av parasitiska induktanseroch magnetiska fältmönster som är av intresse för att minimeraoscillationer, spänningstoppar och sk termiska hot spots. För IGBTmodulerna är det främst den dynamiska strömfördelningen i modulerna ochöver seriekopplade konfigurationer som studeras för att förbättrakommande produkter. Exakt med vilken metod den egen-utveckladeprogramvara kommer att accelereras utifrån bestäms under hösten 2010med en litteraturstudie som bas. Tänkbara metoder är QR decomposition,Fast multipole methods, wavelets, eller hierarkiska matrismetoder. Detprimära syftet är att accelerera lösningen av system beskrivna i frekvensdomänen under kvasi-statiska antaganden formulerade med hälp av enmodifierad nodanalys (MNA) då det passar för ovan nämnda designstudier.Vidare är det av stor vikt att kunna uppskatta felet som dessaaccelerationsmetoder introducerar i lösningen så verktyget inte blir praktisktoanvändbart.
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