Results 41 to 50 of about 14,905,897 (294)

Analysis of Winding Vibration Characteristics of Power Transformers Based on the Finite-Element Method

open access: yesEnergies, 2018
The winding is the core component of a transformer, and the technology used to diagnose its current state directly affects the operation and maintenance of the transformer.
Xiaomu Duan   +4 more
doaj   +1 more source

Overloading Scenario in Solid State Transformer [PDF]

open access: yes2020 11th International Renewable Energy Congress (IREC), 2020
Nowadays, solid state transformer (SST) is been considered as an alternative option in smart grid where additional ancillary services that cannot be provided by conventional line frequency transformer (LFT) are required. However, the power transmission capability of SST is limited to that of its semiconductor switches which are power electronics ...
Nasiru B. Kadandani   +3 more
openaire   +1 more source

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

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

High-resolution solid state NMR experiments for the characterization of calcium phosphate biomaterials and biominerals [PDF]

open access: yes, 2011
Calcium phosphates form a vast family of biominerals, which have attracted much attention in fields like biology, medicine, and materials science, to name a few.
Hanna, John   +55 more
core   +3 more sources

Investigation of the Solid-State Polymorphic Transformations of Piracetam [PDF]

open access: yesCrystal Growth & Design, 2012
The solid-state polymorphic transformations of 2-oxo-1-pyrrolidine acetamide (Piracetam) were investigated using a combination of off-line and on-line techniques; Differential Scanning Calorimetry (DSC), High Temperature X-ray Diffraction (HT-XRD), thermal analysis and Hot Stage Optical Microscopy.
Maher, Anthony   +5 more
openaire   +1 more source

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

Solid State Transformer for Connecting Consumers to the Medium Voltage Network

open access: yesAdvances in Electrical and Computer Engineering, 2020
In this paper the authors describe and analyze an innovative solution for the development of an electronic transformer (Solid State Transformer - SST) with the voltage 10.0/0.230 kV.
BERZAN, V.   +4 more
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

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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