Results 31 to 40 of about 84,506 (287)

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

A novel miniature superconducting converter for 1 kA magnets [PDF]

open access: yes, 1996
A miniature full-wave converter to control the current of a superconducting magnet is developed and tested in our institutes. Typical design values of the device are: AC voltage of 35 V, current of 7 A, and frequency 50-60 Hz; DC voltage o f f 0.2 V, and
Fedorovsky, Michael A.   +3 more
core   +3 more sources

Energy Management Strategy of AC/DC Hybrid Microgrid Based on Solid-State Transformer

open access: yesIEEE Access, 2022
Voltage fluctuation and power mismatch which are caused by the decentralization, randomness, and intermittence of distributed energy resource along with load variability cause severe impacts on the security and quality of power network operation.
Zhengwei Qu   +5 more
doaj   +1 more source

Fully integrated CMOS power amplifier design using the distributed active-transformer architecture [PDF]

open access: yes, 2002
A novel on-chip impedance matching and power-combining method, the distributed active transformer is presented. It combines several low-voltage push-pull amplifiers efficiently with their outputs in series to produce a larger output power while ...
Aoki, Ichiro   +3 more
core   +1 more source

Solid-State Transformer-Based DC Power Distribution Network for Shipboard Applications

open access: yesApplied Sciences, 2022
Due to simplicity, efficiency, and the ability to accommodate energy storage devices, DC distribution networks have been seen as an optimal alternative to AC distribution networks, especially aboard future electric ships.
Abdelrahman Ismail   +7 more
doaj   +1 more source

Quantification of efficiency improvements from integration of battery energy storage systems and renewable energy sources into domestic distribution networks [PDF]

open access: yes, 2019
Due to the increasing use of renewable, non-controllable energy generation systems energy storage systems (ESS) are seen as a necessary part of future power delivery systems.
Farrag, Mohamed E. A.   +2 more
core   +2 more sources

Transformer Monitoring and Protection in Dynamic Power Systems – A Review

open access: yesFrontiers in Energy Research, 2020
Increasing distributed energy resources, especially the renewable energy resources (RESs) are being installed across power systems these years. These RESs, including solar photovoltaic, wind turbines, etc., provide opportunities for operators to improve ...
Boqi Xie, Dongbo Zhao, Tianqi Hong
doaj   +1 more source

The Need for Experimental and Numerical Analyses of Thermal Ageing in Power Transformers

open access: yesEnergies, 2022
Most power transformers are oil-immersed transformers for which its insulation system consists of oil and cellulosic solid. The insulation liquid impregnates the solid-covering air spaces, which improves the efficiency of the insulation system.
Inmaculada Fernández
doaj   +1 more source

Experimental investigation of the weldability of tubular dissimilar materials using the electromagnetic welding process [PDF]

open access: yes, 2017
This paper describes the magnetic pulse welding process (MPW) for tubes. Material combinations of aluminium to steel and copper to aluminium were experimentally evaluated.
De Waele, Wim   +2 more
core   +2 more sources

Design and Analysis of PWM Inverter for 100KVA Solid State Transformer in a Distribution System

open access: yesIEEE Access, 2019
Conventional Magnetic Transformers are key components in a distribution system as it performs several functions like voltage transformation and isolation.
Abdur Rehman, Muhammad Ashraf
doaj   +1 more source

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