Results 21 to 30 of about 20,813,737 (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

Operation and Design Consideration of an Ultra High Step-Up DC-DC Converter featuring High Power Density

, 2021
Publisher Copyright: IEEEA new dual-coupled inductor (CI) single-switch high step-up dc-dc topology featuring high power density is proposed in this study.
Tarzamni, Hadi, Lehtonen, Matti, Dehghanian, Payman, Sabahi, Mehran, Rahimpour, Saeed   +4 more
core   +1 more source

Coherent beam combining architectures for high power tapered laser arrays

, 2022
Paper 100860O, 11 S.Coherent beam combining (CBC) aims at increasing the spatial brightness of lasers. It consists in maintaining a constant phase relationship between different emitters, in order to combine them constructively in one single beam.
Erbert, G., Lucas-Leclin, G., Traub, M., Witte, U., Hanna, S., Janicot, S., Schimmel, G., Decker, J., Georges, P., Crump, P.   +9 more
core   +1 more source

Development and Experimental Research of VFTO Measuring Sensor

Sensors, 2022
Very fast transient overvoltage (VFTO) generated by an operating disconnector is one of the main reasons for electromagnetic disturbance in gas-insulated switchgear (GIS) substations.
Zihan Teng, Jun Zhao, Qi Wang, Haonan Lu, Jiangong Zhang   +4 more
doaj   +1 more source

Development of 110kV Thyristor Assisted Arc Extinguishing Hybrid OLTC [PDF]

E3S Web of Conferences, 2021
On the basis of formulating the technical conditions of 110kV thyristor assisted arc extinguishing hybrid on load tap changer, this paper carries out the mechanical structure design, gives the design scheme of switching switch, selection switch and other
Shi Fei, Yin Yu, Ding Ben-Ping, Gao Fei, Jia Peng-Fei, Hao Lu-Ning, Zhang Lei   +6 more
doaj   +1 more source

Study on internet of things architecture of substation online monitoring equipment [PDF]

MATEC Web of Conferences, 2021
This paper introduces the structure of the existing on-line monitoring system, and analyzes the problems of poor compatibility and reliability of IED in different manufacturers.
Zhang Hejun, Ge Dong, Yang Ning, Jia Pengfei, Li Lihua, Yang Yang   +5 more
doaj   +1 more source

Transmission Line Fault Diagnosis Method Based on Improved Multiple SVM Model

IEEE Access, 2023
The accurate diagnosis of transmission line fault types is a prerequisite for quickly removing faults and restoring power supply, as well as the key to effectively reducing user economic losses, ensuring stable operation of the power system.
Peichuan Sun, Xuefei Liu, Meng Lin, Jie Wang, Tao Jiang, Yibo Wang   +5 more
doaj   +1 more source

Research on 3‐D total electric field of crossing high voltage direct current transmission lines based on upstream finite element method

High Voltage, 2021
The ongoing large‐scale construction of ultra high voltage direct current projects in China makes the crossing of two high voltage direct current (HVDC) lines inevitable.
Xiaoqian Ma, Li Xie, Kun He, Jiayu Lu
doaj   +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

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