Design methodology for a high insulation voltage power transmission voltage power transmission function for IGBT gate driver
Résumé
In this article, a design methodology for DC-DC
converters with high insulation capabilities (up to 30kV) is
proposed. The objective is to provide a power transmission
function for IGBT drivers. To achieve this, a DC-DC full-bridge
series-series (FB-SS) resonant converter with a high air gap
transformer is selected and studied. This high air gap
transformer (loosely coupled transformer (k)) is used for a high
galvanic insulation system. Some transformer geometries are
analyzed and compared for this specific application field.
Therefore, in term of coupling coefficient of transformer (k), the
analysis and the proposed investigations prove that pot core
based transformers are suitable choices. Simulation results are
presented and analyzed and experimental works are briefly
described. Finally, the comparison between the simulation and
experimental results are illustrated to validate the proposed
methodology.