Results 1 to 10 of about 2,035,459 (284)
Model development for the analysis of reducing voltage asymmetry methods in power supply systems
Известия высших учебных заведений: Проблемы энергетики, 2022 THE PURPOSE. To consider the issues of ensuring the quality of electricity in power supply systems. Show that the quality of electrical energy during the operation of power supply systems in certain cases may be violated, including due to uneven loading ...
V. I. Biryulin, D. V. Kudelina
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IEEE Access, 2023 A three-phase ac-dc converter with high-frequency isolation can be realized as a phase-modular system by using three single-phase Power Factor Correction (PFC) rectifier modules with isolated dc-dc converter output stages, which advantageously allows to ...
Thomas Langbauer +6 more
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IEEE Open Journal of Power Electronics, 2023 Realizing an isolated three-phase Power Factor Correction (PFC) ac-dc converter as a phase-modular system, i.e., by star-connecting three single-phase PFC rectifier front-ends with individual isolated dc-dc converter stages generating a common dc output ...
David Menzi +3 more
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Linear recurrence sequences without zeros [PDF]
Czechoslovak Mathematical Journal, 2014 There are two main results in the paper. In order to quote them we recall the following. Given a positive integer \(d\) and \(2d\) fixed integers \(a_0,\dots ,a_{d-1}\) and \(x_0,\dots ,x_{d-1}\) with nonzero \(a_0\); a linear recurrent sequence \((x_n)\) of order \(d\) is defined by these data if \[ x_{n+d}=\sum_{j=0}^{d-1}a_jx_{n+j} \] for all ...
Dubickas, Artūras, Novikas, Aivaras
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A Power Ripple Compensator for DC Nanogrids via a Solid-State Converter
IEEE Open Journal of the Industrial Electronics Society, 2020 This paper presents a method for improving the reliability of DC nanogrids by decreasing the input capacitance requirement. The nanogrid DC bus capacitance requirement is reduced by utilizing the zero-sequence operation mode of the solid state converter (
Ahmad Khan +3 more
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Zero sums in restricted sequences [PDF]
Discrete Mathematics, 2021 A sequence $\bfx=(x_1,\ldots,x_m)$ of elements of $\Z_n$ is called an \textit{$A$-weighted Davenport Z-sequence} if there exists $\bfa:=(a_1,\ldots,a_m)\in (A\cup\{0\})^m\setminus\bfzero_m$ such that $\sum_i a_ix_i=0$. Here $\bfzero_m=(0,\ldots,0)\in\Z_n^m$.
Balachandran, Niranjan, Mazumdar, Eshita
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Electrical 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
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Restraint Scheme of Transformer Zero Sequence Differential Protection Based on Tanimoto Similarity
Zhongguo dianli, 2023 As one of the important transformer protections, zero sequence differential protection has the advantages of high sensitivity and strong anti-interference ability.
Jia ZHU +5 more
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On Short Zero-Sum Subsequences of Zero-Sum Sequences [PDF]
The Electronic Journal of Combinatorics, 2012 Let $G$ be a finite abelian group of exponent $\exp(G)$. By $D(G)$ we denote the smallest integer $d\in \mathbb N$ such that every sequence over $G$ of length at least $d$ contains a nonempty zero-sum subsequence. By $\eta(G)$ we denote the smallest integer $d\in \mathbb N$ such that every sequence over $G$ of length at least $d$ contains a zero-sum ...
Fan, Yushuang +4 more
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IEEE Access, 2021 With the increasing applications of grid-connected voltage source converters, it is important to analyze the impedance characteristic of the grid-connected system to implement the stability analysis of the grid connection operation.
Heng Nian +5 more
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