Results 91 to 100 of about 63,796 (289)

A Comprehensive Review on Space Vector Based-PWM Techniques for Common Mode Voltage Mitigation in Photovoltaic Multi-Level Inverters

Energies
Nowadays, transformer-less photovoltaic (PV) multi-level inverters (MLIs) are commonly employed in both industrial and residential settings. This structure has attracted increased attention due to its unique advantages, such as higher efficiency, lower ...
Zouhaira Ben Mahmoud, Adel Khedher
doaj   +1 more source

In Situ X‐Ray Tomography and Acoustic Emission Monitoring of Damage Evolution in C/C‐SiC Composites Fabricated by Liquid Silicon Infiltration

Advanced Science, EarlyView.
This study investigates how the internal structure of fiber‐reinforced ceramic composites affects their resistance to damage. By combining 3D X‐ray imaging with acoustic emission monitoring during mechanical testing, it reveals how silicon distribution influences crack formation.
Yang Chen, Renato S. M. Almeida, Stefan Flauder, Guillaume Couégnat, Kamen Tushtev, Jürgen Horvath, Peter Wriggers, Kurosch Rezwan   +7 more
wiley   +1 more source

Integrated Control and Modulation for Three-Level NPC Rectifiers

Energies, 2019
This paper uses a novel approach for the control of three-level neutral-point-clamped (NPC) rectifiers in order to tackle the capacitor voltage balance problem.
Antonio Ventosa-Cutillas, Pablo Montero-Robina, Francisco Umbría, Federico Cuesta, Francisco Gordillo   +4 more
doaj   +1 more source

Basal-plane Incommensurate Phases in HCP Structures

, 1997
An Ising model with competing interaction is used to study the appearance of incommensurate phases in the basal plane of an hexagonal closed-packed structure.
A. J. van den Berg, A. J. van den Berg, A. Jorio, B. Neubert, C. Bichara, F. Tuinstra, H. Z. Cummins, I. Luk’yanchuk, J. Kanamori, K. Parlinski, K. Parlinski, K. Parlinski, M. A. Pimenta, M. A. Pimenta, M. A. Pimenta, M. Kurzyński, M. Kurzyński, M. Kurzyński, M. Pleimling, P. Bak, P. Upton, R. McCormack, R. W. G. Wyckoff, T. Janssen, T. Kudo, W. Selke, W. Selke, Y. Yamada, Z. Y. Chen, Z. Y. Chen   +29 more
core   +1 more source

Targeting the GPX4–FUNDC1 Interaction with Magnesium Lithospermate B Attenuates Sepsis‐Associated Lung Injury

Advanced Science, EarlyView.
The diagram depicts the endothelial‐protective mechanism of magnesium lithospermate B (MLB) in sepsis‐associated lung injury. MLB binds GPX4 at Gly79, disrupts its interaction with FUNDC1, prevents mitophagy‐mediated GPX4 degradation, restores mitophagic flux, reduces ROS, and limits ferroptosis.
Zhixi Li, Chang Liu, Zhaoxue Ma, Dongyou Zheng, Renkai Wang, Yongjing Yu, Guangmin Chen, Chenglong Li, Yue Bu, Hang Cao, Bing Zhang   +10 more
wiley   +1 more source

Direct Power Control Strategy based on Space Vector Modulation

Kongzhi Yu Xinxi Jishu, 2010
Direct power control technology is applied on three-phase PWM rectifier. Using space vector modulation instead of switching tables can eliminate the bad effect of unconstant switching frequency on the rectifier.
张明莲, 吕瑞强, 王慧
doaj  

A Novel Virtual Space Vector Modulation Strategy for the Neutral-Point Potential Comprehensive Balance of Neutral-Point-Clamped Converters

Journal of Power Electronics, 2016
A novel Virtual Space Vector (VSV) modulation strategy for complete control of potential neutral point (NP) issues is proposed in this paper. The neutral point potential balancing problems of multi-level converters, which include elimination of low frequency oscillations and self-balancing for NP dc unbalance, are investigated first.
Chuan-Jin Zhang, Yi Tang, Dong Han, Hui Zhang, Xiao Zhang, Ke Wang   +5 more
openaire   +2 more sources

Magnetic Resonance Imaging Reveals Meningeal Lymphatic Impairment in Lung Adenocarcinoma Brain Metastasis Progression

Advanced Science, EarlyView.
This study demonstrates meningeal lymphatic impairment associated with lung adenocarcinoma brain metastasis progression in both human patients and mouse models, establishes clinically applicable non‐invasive imaging biomarkers for quantitative analyzing mLV structure and function, and reveals mLVs as robust prognostic indicators and promising potential
Yuan Zhang, Shucheng Jin, Penghui Guo, Yuying Yin, Yichun Hua, Xiaosheng Ding, Zhe Zhang, Shuo Chen, Xu Han, Baowang Li, Yan Liu, Xiaoyan Li, Deling Li, Jing Jing, Wei Shi, Wang Jia   +15 more
wiley   +1 more source

THREE-LEVEL INDIRECT MATRIX CONVERTER WITH TWO SERIES Z-SOURCE NETWORKS [PDF]

Carpathian Journal of Electrical Engineering, 2019
In previous articles, the concept of series Z-source network has been extended to conventional indirect matrix converter to raise the voltage gain to unity and beyond.
Francis Boafo EFFAH, Philip OKYERE, Mubarak Sani ELLIS, Patrick WHEELER, Alan WATSON, Jon CLARE, Joseph OJO   +6 more
doaj  

Relay Assisted Cooperative OSTBC Communication with SNR Imbalance and Channel Estimation Errors

, 2009
In this paper, a two-hop relay assisted cooperative Orthogonal Space-Time Block Codes (OSTBC) transmission scheme is considered for the downlink communication of a cellular system, where the base station (BS) and the relay station (RS) cooperate and ...
Beluri, Mihaela C., Chitrapu, Prabhakar, Lin, Zinan, Niu, Bo   +3 more
core   +1 more source