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Optimization of an ac-dc transfer step-up scheme
(Institute of Electrical and Electronics Engineers, 2007-04)
A set of statistical tools is proposed for the optimization of an alternating current-direct current voltage or current transfer step-up scheme. These tools are used to remove standards with level dependence and instabilities ...
Cognitive, Mood, and Electroencephalographic Effects of Noninvasive Cortical Stimulation With Weak Electrical Currents
(LIPPINCOTT WILLIAMS & WILKINS, 2011)
Objectives: The use of noninvasive cortical electrical stimulation with weak currents has significantly increased in basic and clinical human studies. Initial, preliminary studies with this technique have shown encouraging ...
Trapezoidal Current Mode for Bidirectional High Step Ratio Modular Multilevel dc-dc Converter
(IEEE, 2019)
High voltage direct current (HVDC) transmission systems and low voltage direct current (LVDC) networks are becoming popular due to their advantages and present feasibility, mainly pushed by the advance in power electronics. ...
Structural, optical and electrical properties of DC sputtered indium saving indium tin oxide (ITO) thin films
(Elsevier, 2018)
Amorphous indium tin oxide (ITO) thin films with reduced to 50 mass% indium oxide
content were prepared by direct current (DC) sputtering of ITO target in mixed argonoxygen
atmosphere onto glass substrates preheated at ...
Structural, optical and electrical properties of DC sputtered indium saving indium-tin oxide (ITO) thin films
(Elsevier GmbH, 2018)
Amorphous indium tin oxide (ITO) thin films with reduced to 50 mass% indium oxide
content were prepared by direct current (DC) sputtering of ITO target in mixed argonoxygen atmosphere onto glass substrates preheated at ...
Modulación por ancho de pulso (PWM) y modulación vectorial (SVM). Una introducción a las técnicas de modulación
(Universidad Autónoma de Occidente, 2005-07)
Los conversores DC/AC tienen por objetivo la transformación de tensión DC a tensión AC de amplitud y/o frecuencia variable dependiendo de la aplicación. El proceso de conversión de voltaje se logra mediante la implementación ...
Asymmetrical Triangular Current Mode (ATCM) for Bidirectional High Step Ratio Modular Multilevel Dc–Dc Converter
(IEEE, 2020)
Direct current (Dc) networks have proven advantages in high voltage direct current (HVDC) transmission systems, and now they are expanding to medium- and low-voltage distribution networks. One of the major challenges is ...
Spin-wave modes in ferromagnetic nanodisks, their excitation via alternating currents and fields, and auto-oscillations
(American Physical Society, 2017)
The excitation of the linear spin wave modes of a soft ferromagnetic free layer of a nanopillar structure through dc-ac currents that traverse the structure is studied, as well as with ac magnetic fields. There is interest ...
An IDA-PBC Design with Integral Action for Output Voltage Regulation in an Interleaved Boost Converter for DC Microgrid Applications
(MDPI, 2021-12)
This paper describes the output voltage regulation control for an interleaved connected to a direct current (DC) microgrid considering bidirectional current flows. The proposed controller is based on an interconnection and ...