Results 71 to 80 of about 1,997,232 (196)

Laser power transmission for space power and propulsion [PDF]

An early status report is presented for a review being made of the state of development of major components and subsystems required for ground-to-space, space-to-space, or space-to-ground laser power transmission for electric or thermal power or ...
Brantley, L. W.
core   +1 more source

Wear characteristics of armature surface and its thermal effects under different electromagnetic launch conditions

Scientific Reports
The surface wear characteristics of the armature passing through the rail are crucial as they relate to the quality of electromagnetic launch and the lifespan of the device.
Luyao Liu, Hongshun Liu, Pengfei Lu, Haoxi Cong, Ali Mohammed Ali Abdo, Li Zhang, Qingquan Li   +6 more
doaj   +1 more source

A neural network-based intelligent system for substation surveillance video analysis with edge and IoT integration

EURASIP Journal on Wireless Communications and Networking
Substations are vital components of power infrastructure, and their security is crucial to the stable operation of the power grid. With the rapid development of Internet of Things (IoT) technologies and edge computing, substation monitoring systems are ...
Bing Tong, Yuyao Li, Xin Chen
doaj   +1 more source

Rectennas for microwave power transmission

IEICE Electronics Express, 2013
Microwave power transmission (MPT) has had a long history before the more recent movement toward wireless power transmission (WPT). MPT can be applied not only to beam-type point-to-point WPT but also to an energy harvesting system fed from distributed or broadcasting radio waves.
openaire   +2 more sources

Noncontact Current Measurement Method for Multicore Cables Considering Nonlinear Effects of Steel Tape Armor

Energies
Steel tape armored multicore cables are critical components in the transmission and distribution of power in medium- and low-voltage networks. It is difficult to measure current in the individual conductors of multicore cables because they are enclosed ...
Lihan Wang, Qishuai Liang, Jiang Ye, Chuan Zhou, Jie Li, Yufeng Wu, Xiaohu Liu, Shisong Li   +7 more
doaj   +1 more source

Solution for the Drift Problem of the Chip in the Packaging Process

MATEC Web of Conferences, 2018
This paper analyzes the drift phenomenon of the chips appearing in the packaging process of the fast recovery diode (FRD), and proposes an effective process to solve this problem. In order to improve the trade-off characteristics of fast recovery diodes,
Dong Shaohua, Liu Yueyang, Jin Rui, Leng Guoqing, He Feng, Liu Jiang, Pan Yan, Wu Junmin   +7 more
doaj   +1 more source

Non-Contact Current Measurement Method Based on Field-Source Inversion for DC Rectangular Busbars

Energies
With the widespread application of DC technology in data centers, renewable energy, electric transportation, and high-voltage direct current (HVDC) transmission, DC rectangular busbars are becoming increasingly important in power transmission systems due
Qishuai Liang, Zhongchen Xia, Jiang Ye, Yufeng Wu, Jie Li, Zhao Zhang, Xiaohu Liu, Shisong Li   +7 more
doaj   +1 more source

H2S and SO2 adsorption on Pt-MoS2 adsorbent for partial discharge elimination: A DFT study

Results in Physics, 2019
SF6 inevitably decomposes to various decomposition products under partial discharge in SF6-insulated equipment. Therefore, in order to ensure the running stability of the equipment, Pt-MoS2 monolayer adsorbent material was proposed to remove the main ...
Hai Qian, Wenhao Lu, Xiaoxing Wei, Wei Chen, Jun Deng   +4 more
doaj   +1 more source

Effect of electric field on bubble generation and dissolution characteristics in oil–paper insulation

High Voltage
The interturn paper insulation of oil‐immersed power transformer windings, under the combined influence of electric fields, moisture, and conductor heating, will produce bubbles, which pose a significant threat to the insulation system. However, there is
Chaojie Yang, Tao Zhao, Yunpeng Liu, Jiajun Yang, Jiaxue Xu, Yingcong Xu   +5 more
doaj   +1 more source

Fault Diagnosis Method for High-Voltage Direct Current Transmission System Based on Multimodal Sensor Feature-LightGBM Algorithm: A Case Study in China

Energies
To improve/enhance the intelligence and accuracy of fault diagnosis in high-voltage direct current (HVDC) systems, this paper proposes a fault diagnosis model for HVDC systems based on the multimodal sensor feature-light gradient boosting machine (MSF ...
Qiang Li, Yingfei Li, Shihong Zhang, Yue Ma, Yinan Qiu, Xiaohang Luo, Bo Yang   +6 more
doaj   +1 more source