Results 1 to 10 of about 26,243 (212)

Investigation of a Low-Speed Commutation Voltage Shock Problem in Three-Level ANPC Inverter with Hybrid Modulation Mode

Machines, 2023
With the development of the photovoltaic industry; there will be an increasing demand for efficient, high-power density, and low-cost grid interface converters.
Jian Yu, Renhui Shen, Le Zhou, Zelin Jia, Yulong Hao   +4 more
doaj   +1 more source

Overvoltage Mechanism of 66 kV Submarine Cable Transmission System for Offshore Wind Farm

Zhongguo dianli, 2023
Overvoltage level is the key parameter of the offshore wind power transmission system, which has significant impact on the system design and equipment selection.
Xiaohe WANG, Haichao YANG, Shuang SONG, Yuxin YANG, Gui YIN, Ke WANG   +5 more
doaj   +1 more source

Research on overvoltage characteristics and influencing factors of converter station under grounding fault

Energy Reports, 2022
In grounding fault of DC system, overvoltage will appear on equipment nodes in converter station. Due to different operation mode and equipment type, it is very different from overvoltage in AC system.
Zongyang Zhang, Zhiyuan Wang, Chao Kang, Fang Yu, Zixin Ma, Jie Guo   +5 more
doaj   +1 more source

A further look at dynamic electro-geometrical model: Its fundamentals and implementation

Ain Shams Engineering Journal, 2020
The rolling sphere method for air termination placement on a structure is easy to apply, but it cannot be used to determine the probability of lightning strike to different points on the structure.
Aderibigbe Israel Adekitan, Michael Rock
doaj   +1 more source

Analysis of suppression switching overvoltage for CRAFT power supply

Energy Reports, 2022
In order to solve the problem of switching overvoltage for CRAFT, an optimal design is put forward to suppress overvoltage, which aims to enable the converter thyristor work normal.
Yalong Yang, Ling Zhang, Ge Gao, Li Jiang, Fengwei Zha   +4 more
doaj   +1 more source

Empowering and conquering infirmity of visually impaired using AI‐technology equipped with object detection and real‐time voice feedback system in healthcare application

CAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract The Internet of Things is emerging as a crucial technology in aiding humans and making their lives easier. Among the human population, a large percentage of people suffer from disabilities resulting in challenges in everyday life particularly people with visual disabilities.
Hania Tarik, Shahzad Hassan, Rizwan Ali Naqvi, Saddaf Rubab, Usman Tariq, Monia Hamdi, Hela Elmannai, Ye Jin Kim, Jae‐Hyuk Cha   +8 more
wiley   +1 more source

Study on the Measurement of the On-Site Overvoltage and Internal Temperature Rise Simulation of the EMU Arrester

Applied Sciences, 2022
In order to analyze the explosion accidents of the CRH5 EMU roof arrester in recent years, an internal temperature measuring platform based on fluorescence fiber was established, and the temperature distribution characteristics under the continuous ...
Shenghui Wang, Qi Ou, Shengfeng Lei, Huaqi Liu, Shuaitao Mao, Qizhe Zhang, Jian Liu, Fangcheng Lv   +7 more
doaj   +1 more source

Analysis on Influence Factors of Temporary Overvoltage of Load Rejection Fault of Offshore Wind Power Transmission System of Permanent Magnet Synchronous Generator

发电技术, 2022
In order to evaluate the temporary overvoltage level of the wind power transmission system based on permanent magnet synchronous generator (PMSG) in case of load rejection, it is necessary to clarify the temporary overvoltage characteristics and its ...
YANG Daye, XIANG Zutao, LUO Xuzhi, SONG Ruihua, CHEN Qiyu, SHEN Lin, WANG Xiaotong   +6 more
doaj   +1 more source

CVT-Based Switching Overvoltage Measurement of UHV Converter Station under Complex Electromagnetic Environment

Zhongguo dianli, 2022
UHV converter station is prone to produce switching overvoltage during switching operation, However, due to its high voltage level, strong electromagnetic interference and other factors, there is still no effective means to measure the overvoltage ...
Rong WANG, Jiazhao SHI, Can GUO, Wei SHEN, Xikui MA   +4 more
doaj   +1 more source

Impact of High Switching Speed and High Switching Frequency of Wide-Bandgap Motor Drives on Electric Machines

IEEE Access, 2021
The emergence of fast-switching wide-bandgap (GaN, SiC) power electronics devices has enabled motor drive systems to achieve high efficiency, power density, control bandwidth and high-level of integration.
Yipu Xu, Xibo Yuan, Fei Ye, Zihao Wang, Yonglei Zhang, Mohamed Diab, Wenzhi Zhou   +6 more
doaj   +1 more source