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.
Distributed generation in the power grid will result in considerable efficiency improvement and increase in reliability and stability of the grid. And DC microgrids have clear benefits such as higher reliability, higher efficiency, better compatibility with DC loads, expandability and etc., over their AC equivalent systems. Although DC microgrids have clear advantages over the AC microgrids, but there...
A new concept of solid state transformer based microgrid system is presented in this paper. By utilizing 400 V DC bus generated from Gen-I solid state transformer proposed by FREEDM systems center, integration issues of DC microgrid and solid state transformer are analyzed. Zonal DC microgrid concept is applied to this novel system with the consideration of burden minimization to the existing AC grid...
Real-time patient monitoring is critical to early detection of clinical patient deterioration in general hospital wards. A key challenge in such applications is to reliably deliver sensor data from mobile patients. We present an empirical analysis on the reliability of data collection from wireless pulse oximeters attached to users. We observe that most packet loss occur from mobile users to their...
Static synchronous series compensator (SSSC) is one of the solid state flexible AC transmission system (FACTS) devices which is effective to control the active power flow across the transmission lines by altering or changing the characteristic impedance of the power line. However its widespread application is still limited by higher cost, series protection requirements, and low reliability. Attention...
MOS capacitors with ultrathin (cong1.2 nm) oxide grown by different techniques have been fabricated on Strained Si/Relaxed SiGe/n-Si substrates with linearly graded SiGe. These techniques involve thermal oxidation, chemical oxidation and both followed by anodic oxidation. Significant improvement in interface states has been obtained when oxidation was followed by anodic oxidation. The leakage currents...
Operation of today's very large scale and interconnected electric power systems depends critically on the devices that facilitate management of power flow on the grid. These devices can be based on passive components such as capacitor and inductor, or rely on the solid state power electronics technology to achieve much faster control bandwidth. Widely known as FACTS (Flexible AC Transmission system)...
In this study, we have developed high dielectric constant (k>50) embedded capacitor dielectrics with a moderate volume fraction of tiller that show good adhesion, good thermal stress reliability and good large area processibility at low processing temperature (<200degC). Material design and processing are critical to obtain a high dielectric constant composite at a moderate filler loading. The...
Split gate flash memory cells using source side enhanced hot electron injection are commonly used in stand-alone memories and embedded systems. Scaling the split gate cell poses major difficulties associated with engineering of the "gap region" between the floating gate and select gate. During thermal oxidation to grow the interpoly oxide, the 2-dimensional nature of oxide growth produces...
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.