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Memorias de investigación
Ponencias en congresos:
AC Resistance Reduction Using Orthogonal Air Gaps in High Frequency Inductors
Año:2019
Áreas de investigación
  • Ingeniería eléctrica, electrónica y automática
Datos
Descripción
This paper presents a relatively simple technique to reduce winding losses due to fringing fields in high-frequency inductors. In high-frequency power electronics, ac inductor winding losses are affected by skin and proximity effects, including uneven current distribution due to fringing magnetic fields around airgaps. It is well known how fringing effects can be mitigated using distributed airgaps, at the expense of non-standard core or winding geometry. The orthogonal-airgap approach proposed in this paper combines airgaps in core segments parallel with the windings with airgaps in segments perpendicular to the windings. The approach is developed using a 1D analytical framework and validated by 2D finite-element simulations. Analytical guidelines are presented to optimize the airgaps to achieve minimum ac resistance. As a case study, a planar inductor is designed for an 8 kW SiC-based buck converter operating at 250 kHz. It is shown how the orthogonal airgaps result in more than 45% reduction in ac resistance and substantially reduced inductor losses compared to the design using standard airgaps. The results are verified by loss measurements on an experimental converter prototype.
Internacional
Si
Nombre congreso
2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL)
Tipo de participación
960
Lugar del congreso
Toronto, ON, Canada
Revisores
Si
ISBN o ISSN
1093-5142
DOI
10.1109/COMPEL.2019.8769607
Fecha inicio congreso
17/06/2019
Fecha fin congreso
20/06/2019
Desde la página
1
Hasta la página
6
Título de las actas
AC Resistance Reduction Using Orthogonal Air Gaps in High Frequency Inductors
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Satyaki Mukherjee (University of Colorado)
  • Autor: Maria Regina Ramos Hortal (UPM)
  • Autor: Yucheng Gao (University of Colorado)
  • Autor: Vivek Sankaranarayanan (University of Colorado)
  • Autor: Branko Majmunovic (University of Colorado)
  • Autor: Rahul Mallik (University of Washington)
  • Autor: Soham Dutta (University of Washington)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Centro o Instituto I+D+i: Centro de Electrónica Industrial. CEI
  • Departamento: Automática, Ingeniería Eléctrica y Electrónica e Informática Industrial
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