Browsing NTNU Open by Author "Lefranc, Pierre"
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High-voltage and high-frequency design of planar transformer with minimum coupling capacitance
Spro, Ole Christian; Peftitsis, Dimosthenis; Lefranc, Pierre (Chapter, 2019)This paper investigates the design of a planar transformer operating at 6.78 MHz and with a target maximum isolation voltage of 40 kV using 2D FEM simulations as a tool. In addition, minimal coupling capacitance must be ... -
Optimized Design of Multi-MHz Frequency Isolated Auxiliary Power Supply for Gate Drivers in Medium-Voltage Converters
Spro, Ole Christian; Lefranc, Pierre; Par, Sanghyeon; Rivas-Davila, Juan; Peftitsis, Dimosthenis; Midtgård, Ole-Morten; Undeland, Tore Marvin (Peer reviewed; Journal article, 2020)This article presents the design and optimization of a suitable topology for an isolated dc–dc auxiliary power supply with high isolation voltage and low coupling capacitance. The converter consists of a GaN HEMT inverter ...