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.
A Hybrid Modular Multilevel Converter (H-MMC) for grid-connected Photo-Voltaic (PV) system is presented in this paper. The array of PV-panels is connected in each sub-module of the converter. The sub-modules are connected in series to form the dc-link for each phase. The dc-link voltage is unipolar and multilevel in nature which is converted to ac voltage by a low frequency converter (LFC). This topology...
With the commercial availability of normally-off three-terminal SiC VJFETs, their acceptance is expected to grow significantly in consideration to their excellent low switching loss characteristics, high temperature operation and high voltage rating capabilities. This paper investigates the influence of the gate drive on the switching characteristics of the device and highlights design strategies...
While Ultra Capacitors offer high power density, high cycling capability and mechanical robustness. Voltage and current ripple from downstream PWM converters result in their heating and lifetime reduction. This paper discusses how a simple novel design scheme of using a very low value series inductance significantly increases capacitor lifetime.
While it is important that ultra-capacitors should be charged to their maximum rated voltage for getting maximum energy out of them, at the same time any overcharging or temperature rise reduces their lifetime. When charging ultra-capacitors with switch mode converters, the ripple current through them and the significant change in their capacitance with frequency can result in higher voltage ripple,...
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.