Results 31 to 40 of about 14,905,897 (294)

Application of X-ray Microtomography to Quantify the Liquid Fraction of M2 Steel for Semi-solid Forming process [PDF]

open access: yes, 2013
Thixoforging, one variant of semi-solid metal processing in which the metallic alloys are processed at low liquid fraction (0.1< Fl < 0.3), is used to produce complex parts with high mechanical properties.
GU, Guochao   +4 more
core   +1 more source

Stability Assessment of Voltage Control Strategies for Smart Transformer-Fed Distribution Grid

open access: yesIEEE Access, 2020
The smart transformer (ST), a solid-state-based transformer with control and communication functionalities, determines the voltage of the low voltage (LV) network. Due to the similar control purpose, the classic multiple feedback loop (multiloop) voltage
Zhi-Xiang Zou   +3 more
doaj   +1 more source

Methods of Humidityanalysis in Transformer Oil

open access: yesCommunications, 2010
To prevent failure states of transformer, we performed different types of measurements. We made measurements of a frequency dependence of capacity of test transformer immersed in tank with transformer oil.
Miroslav Gutten, Jozef Kudelcik
doaj   +1 more source

Development of a Medium Voltage, High Power, High Frequency Four-Port Solid State Transformer

open access: yesCES Transactions on Electrical Machines and Systems, 2022
The power and voltage levels of renewable energy resources is growing with the evolution of the power electronics and switching module technologies.
Ahmad El Shafei   +4 more
doaj   +1 more source

Decoherence, control, and encoding of coupled solid-state quantum bits [PDF]

open access: yes, 2005
In this thesis the decoherence properties, gate performance, control of solid-state quantum bits (qubits), and novel design proposals for solid-state qubits analogous to quantum optics are investigated.
Storcz, Markus J.
core   +1 more source

Solid-state transformer based on modular multilevel converters

open access: yesThe Journal of Engineering, 2019
A new highly compact topology for solid-state transformers is presented. It is based on modular multilevel converters and, therefore, has their usual advantages such as superior voltage shape, high reliability, and scalability.
Patrick Himmelmann, Marc Hiller
doaj   +1 more source

Review of solid-state linear transformer driver technology

open access: yesMatter and Radiation at Extremes, 2018
This paper is a review of recent developments in solid-state linear transformer driver (SSLTD) for applications to pulsed power generation. It summarizes the technological advances reported by previous publications and interprets the experimental ...
Weihua Jiang
doaj   +1 more source

Hybrid-Frequency Cascaded Full-Bridge Solid-State Transformer

open access: yesIEEE Access, 2019
Modular solid-state transformers (SSTs) are suitable for various voltage- and power-level applications. State-of-the-art modular-SST topologies contain a considerable quantity of high-frequency transformers (HFTs) and power switches, thereby increasing ...
Xueyin Zhang   +4 more
doaj   +1 more source

A single‐stage AC‐AC solid‐state transformer with ZVS operation

open access: yesIET Power Electronics, 2021
Solid‐state transformer (SST) is an attractive concept, which provides galvanic isolation and voltage scaling by means of a medium‐frequency link.
Hui Wang   +8 more
doaj   +1 more source

Input Parallel Output Series Structure of Planar Medium Frequency Transformers for 200 kW Power Converter: Model and Parameters Evaluation

open access: yesEnergies, 2021
Nowadays, the demand for high power converters for DC applications, such as renewable sources or ultra-fast chargers for electric vehicles, is constantly growing. Galvanic isolation is mandatory in most of these applications.
Alessandro La Ganga   +2 more
doaj   +1 more source

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