Results 61 to 70 of about 1,941,151 (297)

Application of a Non-carrier-Based Modulation for Current Harmonics Spectrum Control during Regenerative Braking of the Electric Vehicle

Energies, 2020
The regenerative braking of railway vehicles is widely used in DC railway systems all over the world. This mode of operation provides an opportunity to reuse part of the energy consumed by vehicles, and makes the railway system more energy efficient ...
Marcin Steczek, Piotr Chudzik, Adam Szeląg   +2 more
doaj   +1 more source

Unexpected Asymmetric Mn‐Sb Site Mixing and Reentrant Spin‐Glass State of MnSb2Te4

Advanced Functional Materials, EarlyView.
MnSb2Te4 is an intrinsic magnetic topological insulator. Its properties are extraordinarily sensitive to tiny defects, making structural studies essential for understanding how magnetism and topology work together. This work shows that Mn can be unevenly distributed within the crystal and how that disorder is linked to a newly reported spin‐glass state
Gustavo Chavez Ponce de Leon, Ahmad Dibajeh, Gert ten Brink, Majid Ahmadi, Suyang Sun, Wei Zhang, Bart Jan Kooi, George Palasantzas   +7 more
wiley   +1 more source

Generalized formulation of multilevel selective harmonic elimination PWM: Case I-Non-Equal DC Sources [PDF]

, 2006
The paper presents optimal solutions for eliminating harmonics from the output waveform of a multilevel staircase pulse-width modulation (PWM) method with non-equal dc sources.
Dahidah, M.S.A., Agelidis, V.G.
core  

Effect of duty cycle on THD for multilevel inverter based on selective harmonic elimination technique [PDF]

, 2018
Multilevel inverters controlled suffers from the issue of harmonic distortion in the output voltage. Selective Harmonic Elimination (SHE) technique plays an effective role to eliminate these harmonics.
Hamida, Belal Ahmed, Aboadla, Ali, Ezzidin Hassan Aboadla, Khalil, Ashraf F., Mashkuri Bin Yaacob, Naser Muhaisen, Mohamed H. Habaebi, Yaacob, Mashkuri, Belal A. Hamidah, Ashraf Khalil, Sheroz Khan, Habaebi, Mohamed Hadi, Gunawan, Teddy Surya, Ali Aboadla, Aboadla, Ezzidin Hassan Elmabrouk, Khan, Sheroz, Muhaisen, Naser, Teddy Gunawan   +17 more
core   +1 more source

GeS as an Emerging OTS Material: Atomic Structure and Modeling of ON/OFF Switching

Advanced Functional Materials, EarlyView.
The structural puzzle of glassy GeS, an advanced memory‐selector material, has finally been disentangled, revealing a patchwork of mixed tetrahedral and trigonal species. Under a high electric field, over‐ and under‐coordinated Ge and S defects, together with three‐membered rings, form an interconnected network associated with localized and extended ...
Andrey Tverjanovich, Jörg C. Neuefeind, Chris J. Benmore, Daniele Fontanari, Anton Sokolov, Maxim Khomenko, Shinji Kohara, Aleksei Bytchkov, Takeshi Usuki, Maria Bokova, Mohammad Kassem, Pascal Masselin, Mariana Milochova, Eugene Bychkov   +13 more
wiley   +1 more source

Ultra‐Thin Tow‐Based Discontinuous Composites—Material Overview and Aspirations

Advanced Functional Materials, EarlyView.
Tow‐based discontinuous composites made from ultra‐thin tapes offer outstanding in‐plane mechanical properties. This material, inspired by Nacre, has high volume fraction of tapes exceeding 90 % and allows for quasi‐isotropic material plates less than 100 micrometer in thickness.
Ioannis Katsivalis, Vasiliki Safranoglou, Luis Gulfo, Michael R. Wisnom, Martin Fagerström, Malin Åkermo, Soraia Pimenta, Dan Zenkert, Leif E. Asp   +8 more
wiley   +1 more source

Three-level converters with selective Harmonic Elimination PWM for HVDC application

, 2010
In a voltage source converter (VSC) based HVDC system, the modulation scheme used is an important factor in achieving a desired harmonic performance with allowable semiconductor losses. In this paper, the use of selective Harmonic Elimination Pulse Width
Beza, Mebtu Bihonegn, Beza, Mebtu, Staffan Norrga, Beza, Mebtu Bihonegn,, Norrga, Staffan, Mebtu Beza, Norrga, Staffan,, Beza, Mebtu,   +7 more
core   +1 more source

Implementing selective harmonic elimination in multilevel inverters with optimal dc source

e-Prime: Advances in Electrical Engineering, Electronics and Energy
In this paper, the bird swarm algorithm (BSA) is proposed for selective harmonic elimination (SHE) implementation in seven-level inverters. The SHE technique reduces switching frequency and, as a result, inverter losses, by using BSA to expedite the ...
Piyush L. Kamani, Rajendra K. Patel, Mansukh K. Kathiria, Devang P. Majithiya, Jay H. Brahmkhatri   +4 more
doaj   +1 more source

A new low cost cascaded transformer multilevel inverter topology using minimum number of components with modified selective harmonic elimination modulation

Ain Shams Engineering Journal, 2015
In this paper, a novel cascaded transformer multilevel inverter is proposed. The number of the switching devices is reduced in the proposed topology. This topology comprises of a DC source, several single phase low-frequency transformers, two main power ...
H. Khounjahan, M.R. Banaei, Amir Farakhor   +2 more
doaj   +1 more source

Components’ Tolerance Impact on the Design of a Real Case of One MW PV Substation

Discrete Dynamics in Nature and Society, 2023
In this article, a real case of a one MW PV substation design problem is described. The impact of the tolerances of power components (mainly inductors and capacitors) on the design is highlighted through two studies using two different control strategies
Ramzi Ben Ayed, Rawia Chakroun, Nabil Derbel, Abdellatif Ben Makhlouf   +3 more
doaj   +1 more source