Results 31 to 40 of about 3,084,347 (318)

The future of high power laser techniques [PDF]

open access: yes, 2022
Paper 634602 (Pt.1)High Power Lasers have been used for years in corresponding applications. Constantly new areas and new processes have been demonstrated, developed and transferred to fruitful use in industry. With the advent of diode pumped solid state
Hoffmann, H.-D., Loosen, P., Poprawe, R.
core   +1 more source

High power high voltage DC/DC converter for MVDC distribution applications [PDF]

open access: yes, 2012
Smart grids and distributed power will play a big role in the future power grid. In the future many DC grids will coexist with the traditional AC grids.
Ceballos, S.   +9 more
core   +1 more source

Study on switching principle of thyristor assisted arc extinguishing hybrid OLTC [PDF]

open access: yesE3S Web of Conferences, 2021
Thyristor assisted arc extinguishing hybrid on load tap changer has the advantages of both mechanical switch and thyristor switch. It has strong ability to withstand overload, over-current and overvoltage, high reliability, small maintenance workload and
Yin Yu   +7 more
doaj   +1 more source

Analysis of heat flows and their impact on the reliability of high-power diode lasers [PDF]

open access: yes, 2022
S.91-98Facet overheating is considered a potential source for device degradation of diode lasers. We test two different concepts for the reduction of facet temperatures of high-power diode lasers by measuring the facet temperatures by means of Raman ...
Selling, R.   +6 more
core   +1 more source

Characterization of Supraharmonic Emission from High-Power Electric Vehicle Chargers [PDF]

open access: yes, 2022
The increasing number of high-power electric vehicle (EV) charging stations in electricity grids introduces new challenges for the grid operators. Not only the high power demand of the chargers has an impact on the grids, the devices can also be a source
T. Slangen   +8 more
core   +1 more source

Automated alignment of fast-axis collimator lenses for high-power diode laser bars [PDF]

open access: yes, 2022
Paper 89650VThe active alignment of fast axis collimator lenses (FAC) is the most challenging part in the manufacturing process of optical systems based on high power diode laser bars.
Traub, M.   +4 more
core   +1 more source

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

open access: yesThe 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

Enhanced Fault-Tolerant Robust Deadbeat Predictive Control for Nine-Level ANPC-Based Converter

open access: yesIEEE Access, 2022
Deadbeat model predictive control (DB-MPC) is one of the advanced promising control methods for power converters thanks to its simplicity, high steady-state performance and fast dynamic response.
Ibrahim Harbi   +4 more
doaj   +1 more source

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

open access: yesHigh 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   +7 more
doaj   +1 more source

Depth hole filling and optimizing method based on binocular parallax image

open access: yesIET Control Theory & Applications, 2023
Environment perception is one of the most vital function for autonomous robots while performing complex tasks in dynamic environment. In binocular stereo vision algorithm, the calculation of disparity image depends on matching algorithm, and the ...
Xiaoxiang Han   +6 more
doaj   +1 more source

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