Measurement and Analysis of SiC-MOSFET threshold voltage shift

2018-10-04T13:19:11+00:00October 4th, 2018|Conference, Power Electronics & Converters|

Gate-oxide technology weakness is a main reliability issue of Silicon Carbide MOSFET transistors. The threshold voltage shift is a critical phenomenon that addresses the reliability of industrial power applications. It is important to have a better understanding of the phenomena implied in the gate threshold voltage shift. In this context, HTGB test is proposed and the resulting gate oxide stress is studied and discussed in this paper.

Repetitive short-circuit measurement on SiC MOSFET

2018-09-07T16:41:28+00:00September 7th, 2018|Conference, Power Electronics & Converters|

Robustness study for the 1.7 kV SiC MOSFET is presented. After evaluation of the critical energy required for failure, devices were submitted to repetitive short-circuits conditions.

A 100 kW 1.2 kV 20 kHz DC-DC converter prototype based on the Dual Active Bridge topology

2018-08-24T10:22:03+00:00August 24th, 2018|Power Electronics & Converters, Publications|

This article presents the design, the fabrication, and the test of an isolated DC-DC converter for renewable energy applications. The converter is based on the Dual Active Bridge topology and uses silicon carbide power semiconductors and a medium frequency transformer. The design process covers hardware ranging from the semiconductor die to the complete power converter. For the control, a rapid prototyping approach was used. The experimental validation of the 100 kW prototype is presented.

A High Current Switching test bench to estimate switching losses for power switches

2018-08-09T17:43:58+00:00July 27th, 2018|Power Electronics & Converters|

Our High Current Switching test bench is now operational! This one is integrated to the Power switches characterization platform, which can be used to fully characterize power switches.

MVDC DC-DC CONVERTER TECHNOLOGY – The building block of future MVDC grids

2018-10-01T17:14:09+00:00April 19th, 2018|Conference, Power Electronics & Converters|

This poster describes the DC-DC converter technology intended for Medium Voltage Direct Current grids. The benefits of the proposed technology are highlighted for the DC collector for offshore wind farms.