Charles Joubert

TL;DR: In this article, the degradation kinetics of metallized films capacitors under high ripple currents, alone or combined with a dc voltage across the devices terminals, were studied and an original ageing law was proposed to model the capacitance decrease with time based on electrochemical corrosion of the capacitors electrodes.

TL;DR: In this paper, the authors modeled the magnetic behavior of a nanocrystalline material, taking into account temperature variation, and found that the development of power electronic embedded systems leads to increase the operating temperature range.

TL;DR: In this article, the authors proposed a method for measuring currents in the conductors of a sheathed cable of a polyphase network, comprising at least three magnetic sensors arranged around a central hole through which the cable to be measured is intended to pass, the number of conductors in said cable being less than the number sensors, and a calculation device (330) configured to access a library of matrices [K] and [K +, where [K+ is a pseudo-inverse matrix of matrix [K]; form a vector [B] including a magnetic field measurement for

TL;DR: In this paper, an active-clamp flyback converter with a resonant operation is presented, which can realize soft switching on all power elements with the minimum of additional components compared to the classical hard-switched flyback topology.

TL;DR: In this paper, the design, fabrication, and characterization of micro planar inductors on a microwave magnetic material (YIG) was presented for monolithic DC-DC converters in System-In-Package with 100 MHz switching frequency.