High-speed measurements of solid state plasma excitation and recombination processes using microwave and laser radiation

1998 ◽  
Author(s):  
Serge V. Garnov ◽  
A. I. Ritus ◽  
Sergei M. Klimentov ◽  
Sergej M. Pimenov ◽  
Vitali I. Konov ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Solid State ◽  
High Speed ◽  
Recombination Processes ◽  
Plasma Excitation ◽  
State Plasma

A Solid-State On-Load Tap Changer for the Power Transformers of 10—0.4 kV Distribution Networks

Vestnik MEI ◽  
2020 ◽  
Vol 6 (6) ◽  
pp. 82-90
Author(s):  
Dmitriy I. Panfilov ◽  
◽  
Mikhail G. Astashev ◽  
Aleksandr V. Gorchakov ◽  
◽  
...  
Keyword(s):  
Solid State ◽  
Physical Model ◽  
High Speed ◽  
Power Transformer ◽  
Voltage Control ◽  
Power Transformers ◽  
Control Algorithms ◽  
Load Voltage ◽  
Tap Changer ◽  
Load Tap Changer

The specific features relating to voltage control of power transformers at distribution network transformer substations are considered. An approach to implementing high-speed on-load voltage control of serially produced 10/0.4 kV power transformers by using a solid-state on-load tap changer (SOLTC) is presented. An example of the SOLTC circuit solution on the basis of thyristor switches is given. On-load voltage control algorithms for power transformers equipped with SOLTC that ensure high reliability and high-speed operation are proposed. The SOLTC performance and the operability of the suggested voltage control algorithms were studied by simulation in the Matlab/Simulink environment and by experiments on the SOLTC physical model. The structure and peculiarities of the used simulation Matlab model are described. The SOLTC physical model design and its parameters are presented. The results obtained from the simulating the SOLTC operation on the Matlab model and from the experiments on the SOLTS physical model jointly with a power transformer under different loads and with using different control algorithms are given. An analysis of the experimental study results has shown the soundness of the adopted technical solutions. It has been demonstrated that the use of an SOLTC ensures high-speed voltage control, high efficiency and reliability of its operation, and arcless switching of the power transformer regulating taps without load voltage and current interruption. By using the SOLTC operation algorithms it is possible to perform individual phase voltage regulation in a three-phase 0.4 kV distribution network. The possibility of integrating SOLTC control and diagnostic facilities into the structure of modern digital substations based on the digital interface according to the IEC 61850 standard is noted.

An ultra-broadband metamaterial absorber tailored by solid-state plasma

2021 ◽  
pp. 412734
Author(s):  
Hao Zhang ◽  
Jing Yang ◽  
Dan Zhang ◽  
Hai-Feng Zhang
Keyword(s):  
Solid State ◽  
Metamaterial Absorber ◽  
State Plasma

Synthesis of copper nanoparticles by solid-state plasma-induced dewetting

2011 ◽  
Vol 22 (24) ◽  
pp. 245608 ◽  
Author(s):  
Soon-Ho Kwon ◽  
Dong-Hoon Han ◽  
Han Joo Choe ◽  
Jung-Joong Lee
Keyword(s):  
Solid State ◽  
Copper Nanoparticles ◽  
State Plasma

On the theory of surface helicons in solid-state plasma

1983 ◽  
Vol 48 (1) ◽  
pp. 57-60 ◽  
Author(s):  
N.N. Belestki ◽  
V.M. Yakovenko
Keyword(s):  
Solid State ◽  
State Plasma

Research of a New All-Optical Solid-State Scanner Based on GaAs

2013 ◽  
Vol 710 ◽  
pp. 269-272
Author(s):  
Guo Ya Xu ◽  
Jun Hua He ◽  
Fan Sen ◽  
Yuan Tao Zhu
Keyword(s):  
Solid State ◽  
Optical Waveguide ◽  
High Speed ◽  
Refractive Index Change ◽  
Core Layer ◽  
Beam Deflection ◽  
Optical Scanning ◽  
Signal Light ◽  
Change Effect ◽  
All Optical

Design an all-optical solid-state scanner chip, which can realize high speed light deflection in a very small space, instead of electron beam deflection scan image converter tube and opto-mechanical scanner, cancel the complicated mechanical components, use the all-optical scanning to realize the super fast phenomenon observation. The beam deflection system is based on semiconductor optical waveguide core layer carrier induced refractive index change effect to realize, its development work is mainly divided into semiconductor optical waveguide and saw prisms two parts. And through the experiment, we measured deflection angle of the scanner chip to 1053nm signal light.

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