Results 21 to 30 of about 961,580 (305)

A High-Efficiency Low-Wearing Hybrid Voltage Regulator for Utility Applications

open access: yesIEEE Open Journal of Industry Applications, 2023
Step voltage regulator (SVR) has been utilized in power distribution systems for decades as the voltage regulation device. Due to the increasing integration of distributed energy resources, the conventional SVR is severely challenged by the modern power ...
Yafeng Wang, Tiefu Zhao
doaj   +1 more source

Constant-Voltage Steps in Josephson Tunneling [PDF]

open access: yesJournal of the Physical Society of Japan, 1997
We studied the a c Josephson effect. In the resistively shunted junction model (RSJ) the phase difference is expanded in Fourier series. The Fourier components can be evaluated by solving the equations of motion. Truncation is applied to deal with the infinite products and series of Bessel functions.
openaire   +1 more source

Is There a Place for a Reasonable Woman in the Law? A Discussion of Recent Developments in Hostile Environment Sexual Harassment [PDF]

open access: yes, 1993
In this study, we demonstrate piezoelectric power generation from zinc oxide (ZnO) nanowires grown on paper substrate. Vertically aligned ZnO nanowires are deflected by an atomic force microscopy (AFM) tip in contact mode which generates an output ...
Choi   +12 more
core   +2 more sources

Procedure for the Determination of the Appropriate Protective Foil Size to Reduce Step Voltage Using a FEM Model and Evolutionary Methods

open access: yesApplied Sciences
When a fault occurs in a power transmission system, voltages that are dangerous to people may occur. The aim of this work is to present the following method of protection: the use of protective foil installed at the appropriate depth around the ...
Marko Jesenik   +3 more
doaj   +1 more source

A Novel Step-Up Converter with an Ultrahigh Voltage Conversion Ratio

open access: yesEnergies, 2018
A new step-up converter with an ultrahigh voltage conversion ratio is proposed in this paper. Two power switches of such a converter, which conduct synchronically, and its output voltage, which has common ground and common polarity with its input voltage,
Faqiang Wang   +2 more
doaj   +1 more source

A Step-Up Converter with Large Voltage Gain and Low Voltage Rating on Capacitors

open access: yesEnergies, 2022
Step-up converters are widely used in many applications, such as renewable energy generation with photovoltaic panels and fuel cell stacks. In many cases, the required voltage gain is larger for those applications than a traditional boost converter can ...
Miguel Ramirez-Carrillo   +6 more
doaj   +1 more source

Tuning the onset voltage of resonant tunneling through InAs quantum dots by growth parameters [PDF]

open access: yes, 2002
We investigated the size dependence of the ground state energy in self-assembled InAs quantum dots embedded in resonant tunneling diodes. Individual current steps observed in the current-voltage characteristics are attributed to resonant single-electron ...
Hapke-Wurst, I.   +5 more
core   +4 more sources

Analysis of the Influence of Complex Terrain around DC Transmission Grounding Electrodes on Step Voltage

open access: yesEnergies
The distribution of renewable energy sources is geographically limited. In the process of long-distance transmission, the direct current flowing from a ground electrode into the ground will cause a higher step voltage, which will bring serious security ...
Qi Xiong   +4 more
doaj   +1 more source

Switched Capacitor Based High Step-Up Multilevel Inverter with Self-Balancing Ability and Low Switching Stress

open access: yesInternational Transactions on Electrical Energy Systems, 2022
In this article, the switched capacitor (SC) based high step-up multilevel inverter is proposed with self-balancing capability. The proposed SC inverter topology is to step up the high output voltage from the very low input voltage without any bulky ...
M. Venkatesan   +5 more
doaj   +1 more source

Fiske Steps and Abrikosov Vortices in Josephson Tunnel Junctions

open access: yes, 2010
We present a theoretical and experimental study of the Fiske resonances in the current-voltage characteristics of "small" Josephson junctions with randomly distributed misaligned Abrikosov vortices.
A. A. Golubov   +18 more
core   +1 more source

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