Original design of field grading materials for high voltage power module applications
| Autor: | Lionel Laudebat, Zarel Valdez-Nava, Louiza Fetouhi, Sombel Diaham, T. T. Le, Guillaume Belijar, Rabih Khazaka |
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| Přispěvatelé: | IRT Saint Exupéry - Institut de Recherche Technologique, LAboratoire PLasma et Conversion d'Energie (LAPLACE), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Matériaux Diélectriques dans la Conversion d’Energie (LAPLACE-MDCE), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Institut national universitaire Champollion [Albi] (INUC), Moteurs Leroy-Somer ,16 boulevard Marcellin Leroy 16000, Angoulême, France, Safran Tech |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Permittivity Materials science 020209 energy [SPI.NRJ]Engineering Sciences [physics]/Electric power Mechanical engineering dBc Relative permittivity High voltage 02 engineering and technology 01 natural sciences Power module 0103 physical sciences Partial discharge 0202 electrical engineering electronic engineering information engineering Electric power ComputingMilieux_MISCELLANEOUS Voltage |
| Zdroj: | 2020 IEEE 3rd International Conference on Dielectrics (ICD) 2020 IEEE 3rd International Conference on Dielectrics (ICD), Jul 2020, Valencia, France. pp.313-316, ⟨10.1109/ICD46958.2020.9341852⟩ |
| DOI: | 10.1109/ICD46958.2020.9341852⟩ |
| Popis: | One of the main goals in aeronautic industry is to increase the total electrical power in on-board systems. The first approach is to increase the voltage while reducing the volume of converters. However, this approach induces very high electrical constraints on the insulating materials used for power module. These local high electric fields can cause premature failure, by partial discharge activity and insulation breakdown. In order to efficiently reduce the electrical stresses in high voltage power modules, the design of new stress-control encapsulating composite materials with graded properties has been developed using the particles electrophoresis auto assembling technique. It is a promising solution since it does not impact the volume of the power module and has a negligible impact on the overall mass. The aim of this paper is to evaluate different strategies to achieve such field grading encapsulating composite with local high relative permittivity ($\varepsilon_{r} \gt 10)$, tailored around critical areas where the electric field is high. The present paper mainly proposes two processes to enable the electrodeposition of a field grading layer within a composite encapsulation to cover multiple electrodes of a direct bonded copper (DBC) substrate with a complex layout. The first approach consists in adding a new and fixed electrode on the layout of DBC substrate that will not be polarized or used during normal operation of the module. The second method consists in adding a removable top electrode above the substrate. Results show that the latter approach is potentially the best choice to enable the electrodeposition of a homogenous thickness of field graded layer on a complex DBC layout with multiple adjacent copper tracks. |
| Databáze: | OpenAIRE |
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