Results 61 to 70 of about 263,888 (208)

Non-deterministic random bit generator based on electronics noise

open access: yes, 2003
Non-deterministic random bits are needed in many scientific fields. Unfortunately today's computers are very limited in ability to produce them. We present here a method for extraction of non-deterministic random bits from random physics processes, and ...
Stipčević, Mario
core   +1 more source

Early slight inter-turn short circuit fault diagnosis of axial flux stator coreless permanent magnet motor based on phase difference [PDF]

open access: yesJournal of Hebei University of Science and Technology
Aiming at the problem of early inter-turn short circuit fault of axial flux stator coreless motor, a method for early inter-turn short circuit fault diagnosis and positioning of axial flux stator coreless motor based on the phase difference of zero ...
Xiaoguang WANG   +4 more
doaj   +1 more source

Non-Directional Earth Fault Passage Indication in Isolated Neutral Distribution Networks

open access: yesEnergies, 2020
In this paper, two new methods for locating single-phase to ground faults in isolated neutral distribution networks are proposed. The methods are based on the analysis of symmetrical sequence currents.
Amir Farughian   +2 more
doaj   +1 more source

Комплексное обеспечение ЭМС и электробезопасности в низковольтных распределительных сетях с системой заземления "TN-C-S" [PDF]

open access: yes, 2010
Наведено результати теоретичних і експериментальних досліджень комплексного забезпечення ЕМС та електробезпеки споживачів електроенергії, а також підвищення її якості в низьковольтних електричних мережах за допомогою фільтрів струму нульової ...
Жаркин, Андрей Федорович   +3 more
core  

IMPROVING THE EFFICIENCY OF FAULT PROTECTION SYSTEMS OF ELECTRICAL GRIDS BASED ON ZERO SEQUENCE VOLTAGES AND CURRENTS WAVELET TRANSFORMS

open access: yesElectrical engineering & Electromechanics, 2020
Introduction. A significant proportion of earth faults in medium voltage networks represents a short-lived and transient process. Problem. In such cases, earth fault protection that responds to steady-state current and voltage is not able to operate ...
V. F. Syvokobylenko, V. A. Lysenko
doaj   +1 more source

Контроль изоляции конденсаторного типа неравновесно-компенсационным методом при неполнореакторном режиме электропередачи 750 кВ [PDF]

open access: yes, 2007
Проведено перевірку можливості здійснення контролю ізоляції конденсаторного типу пристроями, що реалізують нерівноважно-компенсаційний метод, в умовах існування тривалого неповнореакторного режиму електропередачі 750 кВ без корекції пристроїв з ...
Веприк, Юрий Николаевич   +2 more
core  

Analysis of drawbacks and constraints of classification algorithms for three-phase voltage dips [PDF]

open access: yes, 2018
Voltage events are one of the most common and harmful disturbances of power electric systems. Voltage dips, swells and interruptions are included under this heading.
Carrica, Daniel Oscar   +5 more
core   +1 more source

Vectorial formalism for analysis and design of polyphase synchronous machines [PDF]

open access: yes, 2003
A vectorial formalism for analysis and design of polyphase synchronous machines without reluctance and saturation effects is described. We prove the equivalence of such a machine with a set of magnetically independent machines, which are electrically and
BOUSCAYROL, Alain   +2 more
core   +5 more sources

Research on Circulating Current Suppression Control of Parallel Inverters

open access: yesEnergies
Circulating current suppression can effectively improve the reliability and redundancy of parallel inverter systems. The mechanism and influencing factors of the low- and high-frequency zero-sequence circulating current (ZSCC) are analyzed in this study.
Yibiao Fan   +7 more
doaj   +1 more source

Digital Current-Control Schemes [PDF]

open access: yes, 2009
The paper is about comparing the performance of digital signal processor-based current controllers for three-phase active power filters. The wide use of nonlinear loads, such as front-end rectifiers connected to the power distribution systems for dc ...
Bojoi, Iustin Radu   +3 more
core   +1 more source

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