Results 61 to 70 of about 120,595 (228)

ANPC Three-phase Three-level Inverter

Kongzhi Yu Xinxi Jishu, 2012
There are three kinds of multi-level inverters (MLI) suitable for medium and large power application, such as neutral point clamped (NPC) with diodes, flying capacitor (FC) and cascade H bridge (CHB). Among them NPC MLI is used popular nowadays. In order
CHEN Xianming
doaj  

Comparison of Total Harmonic Distortion (THD) in Three-Level, Three-Phase Inverters Using Cascaded H-Bridge (CHB) and Neutral-Point-Clamped (NPC) Topologies

Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ
Utilizing the same parameters for operation, 50 Hz frequency, and 380 V line voltage, every single inverter is represented mathematically on the MATLAB/Simulink environment.
Wadhah Hasan
doaj   +1 more source

Techno‐Economic Assessment of Large‐Scale Renewable Energy Systems: A Case Study in the Gulf Cooperation Council

Energy Science &Engineering, EarlyView.
A consistent 3 GW hybrid solar–wind configuration was assessed across five GCC locations, revealing substantial regional differences in energy yield and economic performance. Saudi Arabia and Oman achieved the highest generation and lowest LCOE, while the systems delivered substantial CO2 emission reductions across the region.
Ammar Al Sawafi, Al Hussain Al Rashdi, Yahya Al Ismaili, Kevin Hughes, Lin Ma, Derek Ingham, Mohammed Pourkashanian, Yang Zhang, Bill Nimmo   +8 more
wiley   +1 more source

A zero‐current‐transition soft‐switching technique for T‐type NPC three‐level inverter

IET Power Electronics, 2023
Based on the commutation property of the T‐type neutral point clamped (T‐NPC) three‐level inverter, a novel zero‐current‐transition (ZCT) soft‐switching topology is proposed.
Jingyuan Yin, Xiuyuan Yao, Jinke Li
doaj   +1 more source

MRI‐Derived Lymph Node Characteristics for Risk Stratification of Distant Metastasis in Locoregionally Advanced Nasopharyngeal Carcinoma

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background MRI‐derived nodal features may improve prognostication beyond TNM staging, but distant‐metastasis risk models remain limited. Purpose To develop and internally validate an MRI model for distant metastasis prediction in locoregionally advanced nasopharyngeal carcinoma (LA‐NPC). Study Type Retrospective.
Jing Wang, Yuxing Yu, Honghong Zhang, Haosheng Zhang, Jianxian Chen, Jiajia Zheng, Qisi Zhang, Hengyu Guo, Lanxin Lin, Yubin Hu, Sufang Qiu   +10 more
wiley   +1 more source

NPC photovoltaic grid-connected inverter using proportional-resonant controller

, 2014
Multi-megawatt photovoltaic (PV) power plants are widespread in electrical power systems because of the drastic decrease in the PV panel prices. The multi-string structure is considered for high power PV systems due to the increase in the overall energy ...
Dehghani Tafti, Hossein, Ooi, Gabriel Heo Peng, Ukil, Abhisek, Maswood, Ali Iftekhar, Lim, Ziyou, Lim Ziyou, Hossein Dehghani Tafti, Ooi H. P. Gabriel, Ali I. Maswood, Abhisek Ukil   +9 more
core   +1 more source

Open-Circuit Fault Diagnosis of Neutral Point Clamped Three-Level Inverter Based on Sparse Representation

IEEE Access, 2018
Decomposition of the signal on the orthogonal or nonorthogonal basis of the signal space is the traditional method for fault feature extraction in the field of inverter fault diagnosis.
Yunjun Yu, Shilei Pei
doaj   +1 more source

A Topology Synthetization Method for Single-Phase, Full-Bridge, Transformerless Inverter with Leakage Current Suppression—Part II

Energies, 2020
This paper proposes a topology derivation methodology to achieve small leakage current or zero leakage current for photovoltaic application. The core of the proposed method is a unified topology model and MN principle to show how to derive all possible ...
Xiumei Yue, Hongliang Wang, Xiaonan Zhu, Xinwei Wei, Yan-Fei Liu   +4 more
doaj   +1 more source

OpenMRF: A Modular, Vendor‐Neutral Open‐Source Framework for Magnetic Resonance Fingerprinting Using Pulseq

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Widespread adoption and methodological advancement of magnetic resonance fingerprinting (MRF) are limited by the lack of unified, reproducible implementation frameworks and fragmented open‐source tools. To address these barriers, we introduce OpenMRF—a comprehensive Pulseq‐based solution—designed to enable standardized and transferable
Tom Griesler, Jannik Stebani, Sydney Kaplan, Ivaylo Angelov, Petra Albert, Tobias Wech, Martin Blaimer, Xiang Wang, Qingping Chen, Maxim Zaitsev, Zhibo Zhu, Qi Liu, Peter Martin, Jon‐Fredrik Nielsen, Jesse I. Hamilton, Peter Nordbeck, Nicole Seiberlich, Maximilian Gram   +17 more
wiley   +1 more source

Patient iPSC‐derived astrocytes reveal impaired homeostasis and reactive‐like features in propionic acidemia

The Journal of Pathology, EarlyView.
Abstract Propionic acidemia (PA) is a neurometabolic disorder caused by propionyl‐CoA carboxylase deficiency with frequent neurological involvement, yet cell‐type‐specific mechanisms remain poorly defined. We established human induced pluripotent stem cell (iPSC)‐derived astrocytes (iAs) from patients harboring PCCA or PCCB mutations and investigated ...
Irene González‐Garnacho, Mar Álvarez, Francisco Zafra, Pilar Rodríguez‐Pombo, Lourdes R Desviat, Eva Richard   +5 more
wiley   +1 more source