Results 21 to 30 of about 201,758 (300)

On vector spaces of certain modular forms of given weights: Addendum [PDF]

Bulletin of the Australian Mathematical Society, 1982
The statement used in proving Theorem 2 of [1] needs explanation. This was pointed out to us by Professor S. Raghwan of Tata Institute of Fundamental Research, Bombay, and we gave the explanation of this in [2]. For the sake of completeness we give here the full proof of the theorem; filling the gap in the proof.
Amita Aggarwal, Manoj K. Agrawal
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Fault-Tolerant Space Vector Modulation for Modular Multilevel Converters With Bypassed Faulty Submodules [PDF]

IEEE Transactions on Industrial Electronics, 2018
This paper develops a modulation based fault-tolerant (FT) strategy for restoring the operation of three-phase modular multilevel converters (MMCs) with faulty switches. This FT strategy is based on a proposed modified space vector modulation (SVM) technique that generates balanced line-to-line (line) voltages even in the case of a fault occurrence. In
Mohsen Aleenejad, Hamid Mahmoudi, Seyyedmahdi Jafarishiadeh, Reza Ahmadi   +3 more
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Fixed Point of α-Modular Nonexpanive Mappings in Modular Vector Spaces 𝓁p(·)

Symmetry
Let C denote a convex subset within the vector space 𝓁p(·), and let T represent a mapping from C onto itself. Assume α=(α1,⋯,αn) is a multi-index in [0,1]n such that ∑i=1nαi=1, where α1>0 and αn>0. We define Tα:C→C as Tα=∑i=1nαiTi, known as the mean average of the mapping T.
Buthinah A. Bin Dehaish, Mohamed A. Khamsi   +1 more
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A fixed point theorem for uniformly Lipschitzian mappings in modular vector spaces

Filomat, 2017
We give a fixed point theorem for uniformly Lipschitzian mappings defined in modular vector spaces which have the uniform normal structure property in the modular sense. We also discuss this result in the variable exponent space lp(.) = {(xn) ? RN; ?? n=0 ??xn?p(n) < ? for some ? > 0.
Monther Rashed Alfuraidan, Mohamed A. Khamsi, Nesrin Manav   +2 more
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Optimized Control of the Modular Multilevel Converter Based on Space Vector Modulation

IEEE Transactions on Power Electronics, 2018
This paper presents a general space vector modulation (SVM) method for the modular multilevel converter (MMC). Compared with earlier modulation methods, the proposed SVM method not only utilizes the maximum level number (i.e., $2n+ 1$ , where $n$ is the number of submodules in the upper or lower arm of each phase) of output phase voltages, but ...
Yi Deng, Yebin Wang, Koon Hoo Teo, Maryam Saeedifard, Ronald G. Harley   +4 more
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A Comparison of Modulation Techniques for Modular Multilevel Converters

Energies, 2016
This work presents a comparison of three different modulation techniques applied to modular multilevel converters (MMCs). The three modulation strategies studied in this paper are the phase-shifted sinusoidal pulse width modulation (PS-SPWM), the space ...
Miguel Moranchel, Francisco Huerta, Inés Sanz, Emilio Bueno, Francisco J. Rodríguez   +4 more
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Concurrent fault diagnosis of modular multilevel converter with Kalman filter and optimized support vector machine

Systems Science & Control Engineering, 2019
In this paper, concurrent fault diagnosis problem of modular multilevel converter (MMC) with Kalman filter and optimized support vector machine (SVM) is investigated. The state space model by synthesizing the circulating current and the output current is
Yong Zhang, Huanzhen Hu, Zhenxing Liu, Min Zhao, Lei Cheng   +4 more
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Fixed point theory for generalized quasicontraction maps in vector modular spaces

Computers & Mathematics with Applications, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Amini-HarandiA.
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Remark on a Fixed-Point Theorem in the Lebesgue Spaces of Variable Integrability L^p(·)

Mathematics, 2022
In a personal communication, Prof. Domínguez Benavides noted that a fixed-point theorem for modular nonexpansive mappings in Lp(·)(Ω) obtained under the assumptions p+1. Therefore, the conclusion is well known.
Mohamed A. Khamsi, Osvaldo D. Méndez
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Modular Geometric Properties in Variable Exponent Spaces

Mathematics, 2022
Much has been written on variable exponent spaces in recent years. Most of the literature deals with the normed space structure of such spaces. However, because of the variability of the exponent, the underlying modular structure of these spaces is ...
Mohamed A. Khamsi, Osvaldo D. Méndez, Simeon Reich   +2 more
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