Results 151 to 160 of about 2,160 (178)

Classical and strongly classical \(n\)-absorbing second submodules

2022
Summary: Let \(R\) be a commutative ring with identity and \(M\) be an \(R\)-module. The main purpose of this paper is to introduce and investigate the notion of classical and strongly classical \(n\)-absorbing second submodules as a dual notion of classical \(n\)-absorbing submodules. We obtain some basic properties of these classes of modules.
openaire   +2 more sources

Analysis of Submodule Capacitor Voltage Ripple and Second-Harmonic Current in MMCs

2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL), 2019
This paper presents a straightforward approach to analyze the 2nd harmonic currents in modular multilevel converters. The submodule capacitor voltage ripple is derived based upon the capacitor’s charge variations instead of commonly used energy variations, resulting in simplified calculations and an explicit expression for the voltage ripple to ...
Xianghua Shi, Shaahin Filizadeh, Liwei Wang   +2 more
openaire   +1 more source

A modified modular multilevel converter to reduce the second order ripples in the submodule capacitor voltage: Design and analysis

International Journal of Circuit Theory and Applications
SummaryThe modular‐multilevel converter (MMC) faces the problem of second order ripples in the sub‐module DC capacitor voltage during the low frequency operation at the load side. To sort out this problem, this paper demonstrates a three‐phase modified MMC that includes a novel circuit placed between upper and lower arms of each phase, where load is ...
Ramudu Ganji, Jiwanjot Singh
openaire   +1 more source

2-absorbing \(I\)-prime and 2-absorbing \(I\)-second submodules

2019
Summary: Let \(R\) be a commutative ring and let \(I\) be an ideal of \(R\). In this paper, we will introduce the notions of 2-absorbing \(I\)-prime and 2-absorbing \(I\)-second submodules of an \(R\)-module \(M\) as a generalization of 2-absorbing and strongly 2-absorbing second submodules of \(M\) and explore some basic properties of these classes of
openaire   +2 more sources

Failure Rate and Economic Cost Analysis of Clamped-Single Submodule with DC Short Current Protection for High Voltage Direct Current System

Electronics (Switzerland), 2021
Yun-Gi Kwak, Feel-Soon Kang
exaly  

On (n ? 1, n)-?-second submodules

Let R be a commutative ring with identity, M be an R-module, n ? 2 be a positive integer and ?: S(M) ?? S(M) be a function where S(M) is the set of all submodules of M. In this paper we introduce and study the concept of (n ? 1, n)-?-second submodule. We call a non-zero submodule N of M as an (n ? 1, n)-?-second submodule if (a1 …an?1)N ? K and (a1 …an?
Çeken S., Koç S., Tekir Ü.
openaire   +1 more source

Condition Health Monitoring of Modular Multilevel Converter Submodule Capacitors

IEEE Transactions on Power Electronics, 2022
Dražen Dujic
exaly  

Life-Cycle Expectation Using Fault-Tree Analysis for Improved Hybrid Submodule in HVDC System

Electronics (Switzerland), 2021
Feel-Soon Kang
exaly  

Small second submodules

AIP Conference Proceedings
Inaam M. A. Hadi, Maysoun A. Hamel, Muntaha Khudhair Abbas   +2 more
openaire   +1 more source

Graph regularized low-rank representation for submodule clustering

Pattern Recognition, 2020
Tong Wu
exaly