Results 31 to 40 of about 15,654,964 (316)

High-power dual-wavelength intracavity diamond Raman laser

Functional Diamond, 2023
Diamond crystals have garnered significant attention for applications in photonics, owing to their characteristics of ultra-high thermal conductivity, extremely broad spectral transmission range, and high Raman gain coefficient. These characteristics are
Hui Chen, Yufan Cui, Xiaowei Li, Boyuan Zhang, Yunpeng Cai, Jie Ding, Yaoyao Qi, Bingzheng Yan, Yulei Wang, Zhiwei Lu, Zhenxu Bai   +10 more
doaj   +1 more source

Precise hardening with high-power diode lasers using beam-shaping mirror optics

, 2022
S.86-93Heat Treatment is one of the most promising application of multi kilowatt high power diode lasers. Providing a sufficient beam quality HPDL's have the advantage of their high efficiency comparing to Nd:YAG-lasers.
Seifert, M., Beyer, E., Bonß, S., Brenner, B.   +3 more
core   +1 more source

High current field test of impulse transient characteristics of substation grounding grid

The Journal of Engineering, 2018
It is significant to research the impulse characteristics of substation grounding grid for its optimal design and safe and stable operation. In order to obtain the impulse transient characteristics of substation grounding grid under lightning impulse ...
Xuefang Tong, Xiaohui Dong, Bo Tan
doaj   +1 more source

Proposed methodology for online frequency response analysis based on magnetic coupling to detect winding deformations in transformers

High Voltage, 2019
Frequency response analysis is widely used as a method for the offline diagnosis of winding deformations in power transformers. To apply it to a working transformer, people need to determine how to inject the excitation signal and measure the response ...
Yangchun Cheng, Jiangang Bi, Jiangang Bi, Wenzhi Chang, Yuan Xu, Xiaohua Pan, Xianwei Ma, Shuai Chang   +7 more
doaj   +1 more source

Research on Defect Diagnosis Method of Reactor Acoustic Vibration Method Based on Deep Learning [PDF]

E3S Web of Conferences, 2021
Although the state evaluation method based on characteristic parameters and weight factors can extract the characteristic quantities in time domain and frequency domain according to the collected acoustic and vibration signals of reactors, it is ...
Jia Peng-fei, Gao Shu-guo, Zhang Xing-hui, Meng Ling-ming, Yang Yang, Li Li-hua   +5 more
doaj   +1 more source

Current challenges for high-power semiconductor disk lasers

, 2022
S.4-5Here we review of high-power semiconductor disk lasers including thermal management issues and new ...
Malcolm, G.P.A., Bennett, T.E., Hamilton, C.J., Dawson, M.D., Stothard, D.J.M., Hopkins, J.-M., McKnight, L.J., Kane, D.J.   +7 more
core   +1 more source

Estimation of Critical Resistive Leakage Current of polymer housed ZnO surge arrester by electro-thermal modelling

Journal of Electrical Systems and Information Technology, 2018
In this study, a MATLAB/Simulink software based electro-thermal model of the polymer housed, gapless, 60 kV ZnO surge arrester is used for estimating the ‘ Critical Resistive Leakage Current (CRLC)’.
Likitha S., Kanyakumari M., Jithin Pauly P., Shivakumara Aradhya R. S., Vasudev N.   +4 more
doaj   +1 more source

High-power subnanosecond switch

Electronics Letters, 1980
A triggering mechanism, unconnected with carrier transfer effects at long distances, for power commutation of 105–106 W in the subnanosecond range, is believed to have been found from the study of the avalanche breakdown process. The switching time does not increase when the diodes are connected in series.
I.V. Grekhov, A.F. Kardo-Sysoev, L.S. Kostina, S.V. Shenderey   +3 more
openaire   +1 more source

Improved system operations with high penetration of wind power : a dialog between academia and industry - Ireland

, 2010
Panel session submission for the IEEE Power and Energy Society (PES) 2010 General Meeting, July 25-29 2010, Minneapolis, MinnesotaThis is a submission to a panel session at the 2010 IEEE PES General Meeting. It discusses effective collaboration between
Power, Michael, Michael Power, O\u27Malley, Mark, O'Malley, Mark, Mark O'Malley   +4 more
core   +1 more source

High-power diode-laser-bars with 19 up to 48 individually addressable emitters

, 2022
S.18-25The main challenge to address single emitters in a high-power diode-laser-bar is the thermal and electrical management to avoid crosstalking. Especially p-side up assembly leads to increasing thermal influence of neighboring emitters due to the ...
Boenig, N., Boucke, K., Roehner, M., Poprawe, R.   +3 more
core   +1 more source