Articles de revista: Enviaments recents
Ara es mostren els items 13-24 de 59
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Lessons learned in the use of WIRIS quizzes to upgrade Moodle to solve electrical circuits
(2012-01-16)
Article
Accés obertWIRIS quizzes is an online mathematics tool for educational purposes that upgrades Moodle quizzes, and allows the development of personalized quizzes using random data and conditional instructions. WIRIS quizzes can be ... -
Modulation strategy for multiphase neutral-point-clamped converters
(2015-02-01)
Article
Accés obertThis paper presents a novel modulation strategy for n-phase neutral-point-clamped (NPC) converters. The proposed modulation strategy is able to control and completely remove the low-frequency neutral-point (NP) voltage ... -
A modified voltage balancing sorting algorithm for the modular multilevel converter: Evaluation for staircase and phase-disposition PWM
(2015-08-01)
Article
Accés obert -
Control strategies for combining local energy storage with wells turbine oscillating water column devices
(2015-11-01)
Article
Accés obert -
Single-carrier phase-disposition PWM implementation for multilevel flying capacitor converters
(2015-10-01)
Article
Accés obertThis letter proposes a new implementation of phase-disposition pulse-width modulation (PD-PWM) for multilevel flying capacitor (FC) converters using a single triangular carrier. The proposed implementation is much simpler ... -
Current-balancing technique for interleaved voltage source inverters with magnetically coupled legs connected in parallel
(Institute of Electrical and Electronics Engineers (IEEE), 2015-03-01)
Article
Accés obertConnecting legs in parallel in a voltage source inverter is a way to increase the output current and, thus, its rated power. The connection can be made using either coupled or uncoupled inductors, and achieving an even ... -
Circulating current injection methods based on instantaneous information for the modular multilevel converter
(Institute of Electrical and Electronics Engineers (IEEE), 2015-02-01)
Article
Accés obertThis paper studies different circulating current references for the modular multilevel converter. The circulating current references are obtained from the instantaneous values of the output current and modulation signal ... -
Capacitor voltage balancing in a three-level-converter-based energy storage system
(2013-10-01)
Article
Accés restringit per política de l'editorialThis paper discusses a grid-connected energy storage system based on two three-level (3L) converters: a DC-DC one and a neutral-point-clamped inverter. When compared to a system using standard two-level converters, the ... -
Enhanced phase-shifted PWM carrier disposition for interleaved voltage-source inverters
(2014-03-01)
Article
Accés obertThis letter presents a novel implementation of pulse width modulation that improves the quality of the line-to-line output voltages in interleaved multiphase voltage-source inverters (VSIs). In multiphase VSIs with n ... -
Performance evaluation of three-phase grid-connected photovoltaic inverters using electrolytic or polypropylene film capacitors
(2014-10-01)
Article
Accés restringit per política de l'editorialIn grid-connected photovoltaic (PV) power stations, improving the life expectancy and long-term reliability of three-phase PV inverters is urgently needed to match the significantly higher lifetime of the PV modules. A key ... -
A three-phase frequency-adaptive phase-locked loop for independent single-phase operation
(2014-12-01)
Article
Accés restringit per política de l'editorialThis letter proposes a phase-locked loop (PLL) able to operate as an independent single-phase PLL in the context of three-phase systems. Its key advantage is that the extracted information allows the independent control ... -
Characterization and modeling of the conducted emission of integrated circuits up to 3 GHz
(2014-08-01)
Article
Accés restringit per política de l'editorialIn this paper, an electrical model in order to predict the electromagnetic compatibility (EMC) conducted emission of integrated circuits (ICs) up to 3 GHz is presented. The electrical model predicts the behavior of the ...