Results 251 to 260 of about 85,073 (307)
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Solid–Liquid State Transformable Magnetorheological Millirobot
ACS Applied Materials & Interfaces, 2022Magnetically actuated soft millirobots (magneto-robot) capable of accomplishing on-demand tasks in a remote-control manner using noninvasive magnetic fields are of great interest in biomedical settings. However, the solid magneto-robots are usually restricted by the limited deformability due to the predesigned shape, while the liquid magneto-robots are
Zhipeng Chen +5 more
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1980 IEEE Power Electronics Specialists Conference, 1980
This paper describes a solid state step up/down transformer system which also provides AC output voltage regulation. It uses PWM AC power switching to achieve high efficiences and uses no large inductive components. Its performance has been verified by extensive computer simulation of the entire system and breadboard testing of several of the key ...
J. C. Bowers +3 more
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This paper describes a solid state step up/down transformer system which also provides AC output voltage regulation. It uses PWM AC power switching to achieve high efficiences and uses no large inductive components. Its performance has been verified by extensive computer simulation of the entire system and breadboard testing of several of the key ...
J. C. Bowers +3 more
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Soft-switching solid state transformer (S4T)
2016 IEEE Energy Conversion Congress and Exposition (ECCE), 2016This paper presents a new topology for a fully bidirectional soft-switching solid state transformer (S4T). The minimal topology, featuring 12 main devices and a high-frequency transformer, does not use an intermediate DC voltage link, and provides sinusoidal input and output voltages. The S4T can be configured to interface with two-or multi-terminal DC,
Hao Chen, Deepak Divan
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Transition state analysis of solid-solid transformations in nanocrystals
The Journal of Chemical Physics, 2009A systematic simulation methodology is introduced for the accurate determination of experimentally measurable quantities characterizing solid-solid phase transformations under pressure. The atomistic mechanisms of nucleation and growth in a structural transformation of pressurized CdSe nanocrystals are identified using transition path sampling computer
Grünwald, Michael, Dellago, Christoph
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Virtual Transformer Operation of Solid State Transformer (SST)
IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society, 2020This paper proposes a virtual transformer operation of a three-stage solid state transformer (SST) used in the distribution network. By tracking the AC voltage at medium voltage AC (MVAC) input side as the reference of low voltage AC (LVAC) output stage, voltage relationship between AC buses can be established, and the mutual voltage support can be ...
Qian TAO +5 more
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2018
Die Autoren danken Herrn MSc ETH Thomas Guillod fur Berechnungen und Simulationen zur den Skalierungsgesetzen von Mittelfrequenztransformatoren und Dr. sc. ETH Gabriel Ortiz, ABB-Forschungszentrum Schweiz, fur Diskussionen zu Schaltungstopologien und Einsatzbereichen von Solid-State-Transformer-Systemen.
Dierk Schröder, Rainer Marquardt
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Die Autoren danken Herrn MSc ETH Thomas Guillod fur Berechnungen und Simulationen zur den Skalierungsgesetzen von Mittelfrequenztransformatoren und Dr. sc. ETH Gabriel Ortiz, ABB-Forschungszentrum Schweiz, fur Diskussionen zu Schaltungstopologien und Einsatzbereichen von Solid-State-Transformer-Systemen.
Dierk Schröder, Rainer Marquardt
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Solid-state transformer topology selection
2009 IEEE International Conference on Industrial Technology, 2009This paper considers the design criteria of the solid-state transformer circuit, with special focus on the high voltage side. Three plausible multilevel converter configurations are identified and compared in terms of cost and voltage balance requirements.
Wim van der Merwe, Toit Mouton
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Solid-state transformations involving quasicrystals
Materials Science and Engineering: B, 1995Solid-state transformations involving quasicrystals were studied in several aluminium-base ternary alloys. An ordering transformation of the icosahedral phase at room temperature was noticed. A transformation from higher symmetry of quasicrystals results in several orientational variants of the product phase, the total symmetry of which is the same as ...
Singh, Alok, Ranganathan, S
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Middle Frequency Transformer Investigation for Solid-State Transformer
2018 International Conference on Smart Grid (icSmartGrid), 2018This paper investigates the middle frequency transformer for the solid-state transformer. It is expected to be used in the traffic and power system. One of the key technologies is the solid-state transformer. The 3kHz, 5kVA transformers with some different core materials are manufactured.
Noriyuki Kimura, Toshimitsu Morizane
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2016
Abstract Eutectoid and peritectoid transformations are classified as solid-state invariant transformations. This article focuses primarily on the structures from eutectoid transformations with emphasis on the classic iron-carbon system of steel. It reviews peritectoid phase equilibria that are very common in several binary systems.
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Abstract Eutectoid and peritectoid transformations are classified as solid-state invariant transformations. This article focuses primarily on the structures from eutectoid transformations with emphasis on the classic iron-carbon system of steel. It reviews peritectoid phase equilibria that are very common in several binary systems.
openaire +1 more source