Results 301 to 310 of about 64,210 (348)

Modulation algorithms for controlling semiconductor converters

Russian Electrical Engineering, 2015
Different algorithms for controlling semiconductor converters are considered using the example of an autonomous inverter. The structures of pulse-width and space vector modulation algorithms and ways to improve them are shown. The electromagnetic compatibility of the autonomous inverter with different versions of the modulation algorithm is analyzed.
B. Yu. Vasil’ev, V. S. Dobush
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AlGaAs Semiconductor Quasiphase-Matched Wavelength Converters

Japanese Journal of Applied Physics, 1998
Wavelength conversion based on sum frequency generation (SFG) using a semiconductor quasiphase-matched (QPM) waveguide with a periodically crystal domain inverted structure has been studied both theoretically and experimentally. Mathematical expressions with clear physical insight into QPM SFG are derived, taking into account waveguide ...
Chang-qing Xu, Keizo Takemasa, Koji Nakamura, Hideaki Okayama, Takeshi Kamihoh   +4 more
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Converter Topologies and Power Semiconductors for Industrial Medium Voltage Converters

2008 IEEE Industry Applications Society Annual Meeting, 2008
Today there are numerous different converter topologies and power semiconductor devices used in medium- voltage drive systems. This paper provides a general overview of the common converter topologies available on the market and their corresponding major characteristics.
Marc Hiller, Rainer Sommer, Max Beuermann   +2 more
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Semiconducting graphene: converting graphene from semimetal to semiconductor

Nanoscale, 2013
Interest in graphene has grown extensively in the last decade or so, because of its extraordinary physical properties, chemical tunability, and potential for various applications. However, graphene is intrinsically a semimetal with a zero bandgap, which considerably impedes its use in many applications where a suitable bandgap is required.
Ganhua, Lu, Kehan, Yu, Zhenhai, Wen, Junhong, Chen   +3 more
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Semiconductor Converter Applications

1986
Power electronics are employed wherever the task is to convert, control, and contactlessly switch electrical energy. Reasons for the steadily increasing application of static converters are to be found in their technical properties and operating characterstics.
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Spot size converter integrated semiconductor optical amplifier

Technical Digest. CLEO/Pacific Rim '99. Pacific Rim Conference on Lasers and Electro-Optics (Cat. No.99TH8464), 1999
Spot size converter (SSC)-SOA consists of a slightly tensile bulk 0.2 /spl mu/m thick InGaAsP (/spl lambda/=1.55 /spl mu/m) active layer and 0.1 /spl mu/m thick InGaAsP (/spl lambda/=1.3 /spl mu/m) waveguides, which were grown by selective area growth (SAG) using MOCVD to implement SSC. The total device length is 1500 /spl mu/m.
J.S. Lee, J.R. Kim, S. Park, M.W. Park, J.S. Yoo, S.D. Lee, A.G. Choo, T.I. Kim   +7 more
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Semiconductor converters of electrical energy

2020
The textbook considers the need, principles and methods of mutual conversion of parameters of electric energy at DC and AC for stationary and Autonomous objects. Features of operation of power electronics elements in specific conditions of their continuous high-frequency switching are described.
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Power semiconductor converter optimization of electric drive

2018 17th International Ural Conference on AC Electric Drives (ACED), 2018
This paper presents the optimization of power circuits of multiphase semiconductor converters which powered synchronous reluctance electric drives. In the general case, currents leak through power circuits which form is different from a sinusoidal one.
Anatoly T. Tsirkunenko, Artyom A. Gryzlov, Sergey S. Bukhanov   +2 more
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Simulation of Semiconductor Converter for Electromagnetic Separator

2020 International Ural Conference on Electrical Power Engineering (UralCon), 2020
The electromagnetic separator for removing magnetic particles from liquid materials is considered in the paper. The model of semiconductor converter for electromagnetic separator is developed in MATLAB Simulink. The converter load parameters (active resistance and inductance of magnetizing coils) are defined.
A. G. Vozmilov, A. A. Evdokimov, V. I. Charykov   +2 more
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Adaptive Control System for Semiconductor Frquency Converters

2020 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus), 2020
This paper presents mathematical simulation of the adaptive control system for semiconductor frequency converters. Primary approaches of the elements and nodes operating of the adaptive regulator were considered. Mathematical model of the valve-type frequency converter on cycloconverter base was proposed.
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