The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The aim of this work is the thermal design of a modular direct liquid cooled package for 1200V–35A SiC power MOSFETs, in order to take full advantage of the high power density and high frequency performance of these devices, in the development of a modular integrated solution for power converters. An accurate electro-thermal fluid dynamic model is set up and validated by thermal characterization on...
Nowadays, AC single phase power supply is widely used in railway electrification. To step down the input voltage, rail vehicles should board a heavy and bulky transformer. In recent years, several multilevel topologies including medium frequency transformers were proposed to replace the low frequency input transformer. The objective is to reduce weight and volume on the traction drive while increasing...
This paper presents a loss calculation method based on the selection of IGBTs and Diodes, and on an analysis of conduction and switching losses in multilevel pulse width modulation (PWM) systems. A comparison between the Modular Multilevel Converter (MMC) and other multilevel topologies, adapted to medium voltage applications, will thus be presented in order to highlight issues such as thermal disparity...
The objective of this study is to ameliorate transient heat flux measurements up to 60 MW/m2 in high enthalpy plasma wind tunnels. Usually so-called null-point calorimeters are used, which means the temperature inside a known material is measured with a thermocouple and by solving the heat conduction problem under the assumption of one-dimensional, semi-infinite heat transfer the surface heat flux...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.