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 paper presents an FPGA-based adaptive predictive control scheme for single-phase T-type NPC inverter in applications to microgrids with high efficiency and robust performance. Predictive control is applied for current regulation to achieve fast dynamic response with low total harmonic distortion (THD). Implementation of a grid inverter with minimum inductor will result nonlinear inductance due...
This paper proposes a novel on-line inductance identification method to account for inductance saturation in current controller design for single-phase grid-connected inverter with single inductor filter. The predictive control method with delay compensation is used which has wide bandwidth and reaches steady state within one switching period in current control loop. A multiple-sampling method is...
Instead of constant dc-link voltage, this paper proposes a PAM/PWM for PMSM drive, which provides variable dc-link voltage to PWM inverter to reduce switching loss and improve system efficiency. An optimal dc-link voltage reference can be found for a specified operation speed for a centrifugal load condition. In order to realize the variable dc-link voltage, this paper implements a variable output...
A motor drive with a PFC front-end converter provides advantages of improved power quality and over-all system efficiency. A buck-boost PFC converter provides adjustable output dc-link voltage for switching loss reduction of the connected PWM inverter drive. This paper proposes a green mode control strategy for the variable output voltage power factor correction (VOPFC) ac-dc converter and connected...
This paper presents a robust sensorless startup control method with self-commissioning for permanent magnet motors for smooth ramping speed up without reversing oscillations. Low cost sinusoidal PMSM motors used for fan and blower applications may have large parameter variations and static friction uncertainties. A reliable startup control with smooth operation thus becomes an indispensable requirement...
The ambipolar behavior limits the performance of Schottky-barrier-type graphene nanoribbon field-effect transistors (SB-GNRFETs). We propose an asymmetric gate (AG) design for SB-GNRFETs, and show that it can significantly reduce the $I_{\mathrm{{\scriptstyle OFF}}}$ . Simulation results indicate at least 40% and $5\times $ improvement in the subthreshold swing and the $I_{\mathrm{{\scriptstyle ON}}}/I_{\mathrm{{\scriptstyle OFF}}}$ ...
The graphene nano-ribbon field effect transistor (GNRFET) is an emerging technology that received much attention in recent years. Recent work on GNRFET circuit simulations has shown that GNRFETs may have potential in low power applications. In this paper, we review the existing work on GNRFET circuit modeling, compare the two varieties of GNRFETs, Metal-Oxide-Semiconducting-(MOS-)type and Schottky-Barrier-(SB-)type...
This paper examines the feasibility of applying a micro hydro power generation system as one of the enabling technologies that previously submitted for a balanced distributed generation strategy through a modified microgrid as part of the various regional energy programs underway in Africa. In addition, this paper also points to R&D advancements in various technologies focused on energy sustainability...
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.