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.
This work presents a preliminary analysis on a new 4-level medium voltage multilevel converter topology. The topology is able to reach medium-voltage operation for 3.3 kV and 6.6 kV applications with conventional semiconductors such as IGCTs or HV-IGBTs. The switching states and their equivalent circuits are presented, along with an adapted multi-level modulation scheme based on level shifted PWM...
This paper describes the experimental implementation of the model predictive current control algorithm for a two-level four-leg inverter operating under balanced, unbalanced, and nonlinear loading conditions. The proposed scheme is designed to predict the future behavior of the load currents for each of the 16 possible switching states of the converter. The control method chooses a switching state...
The hybrid flying-capacitor based active-neutral-point-clamped converter is a recent multilevel converter topology with interesting properties such as high quality output voltage and easy extension to achieve a high number of levels with reduced number of power devices. The control of the flying capacitors of the three-phase converter has been previously carried out by an elaborate control technique...
In this paper, self-powered supply (SPS) techniques for gate drivers of different high power switches such as SCRs, IGBTs, GTOs, IGCTs, MOSFETs, and ETOs are surveyed. System configurations and operation principles of selected proposals in the literature are demonstrated. Compared to the external power supplies, SPSs bear the advantages of lower system cost and size, and increased reliability of power...
In this paper, a high frequency soft switch DC/DC converter is proposed for power semiconductors (e.g., GCT, GTO). The proposed design includes six Parallel Isolated Power Supplies (PIPS), each supplying a GCT gate driver at regulated 20 Vdc. Unlike self-powered supply which is design for powering up the switch gate driver for only one specific converter topology such as CSR, VSR, VSI, etc., our design...
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.