Results 41 to 50 of about 2,205,500 (84)

Air Pollution‐Induced Epigenetic Regulation in Respiratory Diseases: Mechanisms, Dysregulation, and Therapeutic Opportunities

MedComm – Future Medicine, Volume 4, Issue 4, December 2025.
Air pollution, a major global health hazard, contributes to asthma, chronic obstructive pulmonary disease, pulmonary fibrosis, and lung cancer via four core epigenetic pathways (DNA/RNA methylation, noncoding RNAs, and histone modifications), shaping gene expression and driving disease pathogenesis.
Ruitong Zeng, Jiliu Liu, Guoping Li, Junyi Wang, Anying Xiong, Ying Xiong, Xiang He   +6 more
wiley   +1 more source

A Low‐Frequency Transformer Protection Method Based on Excitation Inductance Parameter Identification

IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
In this paper, we propose a method to effectively identify faults and excitation inrush currents in the area by using the characteristics of instantaneous excitation inductance, so as to improve the reliability and accuracy of low‐frequency transformer protection in offshore wind power low‐frequency transmission system.
Shuping Gao, Zhe Quan, Xinyu Wu, Chenqing Wang, Shi Chen, Yaming Ge, Xiangping Kong   +6 more
wiley   +1 more source

Adaptability Analysis and Improvement of Traditional Transformer Protection in Offshore Low‐Frequency Wind Power System

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
In this paper, a zero‐sequence differential protection based on phase difference is proposed for the internal grounding fault of the transformer, which has strong anti‐excitation inrush current interference, and the protection criterion is the self‐generated ze‐ro‐sequence current and the neutral zero‐sequence current on the high‐voltage side of the ...
Chenqing Wang, Shi Chen, Xinyu Wu, Yaming Ge, Xiangping Kong, Shuping Gao, Jinyu Zhou   +6 more
wiley   +1 more source

An Overview of Applications of the Modular Multilevel Matrix Converter [PDF]

, 2020
The modular multilevel matrix converter is a relatively new power converter topology suitable for high-power alternating current (AC)-to-AC applications.
Felix Rojas, Espinoza Bolaños, Mauricio, Wheeler, Patrick, Roberto Cárdenas Dobson, Mora, Andr�s, Mora Castro, Andrés Felipe, C�rdenas Dobson, Roberto, Ibaceta, Efrain, Rojas, Felix, Matias Urrutia, Espinoza, Mauricio, Mora, Andrés, Patrick Wheeler, Diaz, Matias, Urrutia, Matias, Díaz Díaz, Matías, Matias Diaz, Cárdenas Dobson, Roberto, Mauricio Espinoza, Andrés Mora, Efrain Ibaceta, Urrutia O., Matías   +21 more
core   +1 more source

Fault ride-through coordinated control strategy for offshore wind power via flexible low-frequency transmission system

电力工程技术
The offshore wind power via flexible low-frequency transmission (FLFT) system based on the modular multilevel matrix converter (M3C) faces power surplus and stability risks following faults on the power frequency grid side.
Nianwen XIANG, Hailong CHENG, Shouhong YE, Bingbing SHAO, Shulai WANG, Yi LU   +5 more
doaj   +1 more source

Fully Decoupled Branch Energy Balancing Control Method for Modular Multilevel Matrix Converter Based on Sequence Circulating Components

CSEE Journal of Power and Energy Systems
The modular multilevel matrix converter (M3C) is a potential frequency converter for low-frequency AC transmission. However, capacitor voltage control of high-voltage and large-capacity M3C is more difficult, especially for voltage balancing between ...
Zexin Zhao, Weijiang Chen, Zhichang Yang, Guoliang Zhao, Bin Han, Yunfei Xu, Nianwen Xiang, Shulai Wang   +7 more
doaj   +1 more source

Optimization of the passive components of the Modular Multilevel Matrix Converter for Drive Applications [PDF]

, 2012
The Modular Multilevel Matrix Converter (M3C) is a new topology which extends the Modular Multilevel Converter (M2C) family for converters to low speed drive applications. The energy pulsation and therefore the amount of the installed capacitance is very
Kammerer, Felix, Kolb, Johannes, Braun, Michael   +2 more
core   +1 more source

A Low Inrush Current Pre-Charging Strategy of M3C with Improved Nearest Level Modulation

Energies
The modular multilevel matrix converter (M3C) can perform AC/AC conversion directly. However, M3C operation often requires a pre-charging process, which can be challenging due to the need for fast pre-charging with low inrush current.
Rufei He, Yikai Li, Yumin Peng, Yiming Ma, Fanqi Huang, Hailong Li, Wei Luo   +6 more
doaj   +1 more source

A Simple Carrier-Based Modulation for the SVM of the Matrix Converter [PDF]

, 2013
Today, industry has not fully embraced the matrix converter solution. One important reason is its high control complexity. It is therefore relevant to propose a simpler but efficient modulation scheme, similar as three phase voltage source inverter ...
ARPILLIERE, Michel, DELARUE, Philippe, CIMETIERE, Xavier, LE MOIGNE, Philippe, VIDET, Arnaud, GRUSON, Francois   +5 more
core   +1 more source

Circulating Current Suppression Strategy of Modular Multilevel Matrix Converter Based on Quasi-Proportional Resonant Control

Shanghai Jiaotong Daxue xuebao
Modular multilevel matrix converter (M3C) is the core device of the fractional frequency transmission system. Due to the lack of direct current link, the electrical quantities of different frequencies are directly coupled inside the M3C, resulting in a ...
JIANG Yafeng, LI Yibo, WU Qiuwei, LIU Shenquan, WU Xiaodan, ZHOU Qian
doaj   +1 more source