Results 1 to 10 of about 4,035 (194)
Incubation of Horseradish Peroxidase near 50 Hz AC Equipment Promotes Its Disaggregation and Enzymatic Activity [PDF]
MicromachinesLow-frequency electromagnetic fields, induced by alternating current (AC)-based equipment such as transformers, are known to influence the physicochemical properties and function of enzymes, including their catalytic activity.
Yuri D. Ivanov +14 more
doaj +2 more sources
Electronicly controlled isolating autotransformer [PDF]
, 2015 The goal of this work was to build a universal fully controllable laboratory power supply with AC output voltage. Main emphasis has been put on the final quality and durability of the power supply. Output voltage regulation is based on the principle of serial switching of secondary windings.
Nedoma, J.
openaire +2 more sources
A DC/DC autotransformer with integrated fault blocking capability
Zhejiang dianli, 2023 As crucial equipment for multi-voltage DC interconnection， high-capacity high-voltage DC/DC converters can be used for voltage conversion and DC fault isolation.
LU Yi +5 more
doaj +1 more source
Efficient Zero-Sequence Impedance Measurement in Autotransformers Using Low-Voltage Excitation
Applied Sciences, 2023 In accordance with the IEEE standard, the zero-sequence impedance test of transformers necessitates an open or short circuit test on the high-voltage side winding.
Min Zhang +6 more
doaj +1 more source
IET Electric Power Applications, 2023 Once the short circuit damage accident of a large capacity 500 kV transformer occurs suddenly, it will seriously affect the safe operation of the power grid.
Zhongxiang Li +7 more
doaj +1 more source
Selection of optimum device parameters for permanent magnetic field generation
Известия высших учебных заведений: Проблемы энергетики, 2021 THE PURPUSE. To consider the fields of application of electromagnetic treatment of water systems. To analyze the modern literature on the use of constant magnetic fields for dehydration of oil-water emulsions.
R. T. Khazieva, M. D. Ivanov
doaj +1 more source
Study of Partial-Phase Steady-State Operation Modes of Phase-Shift Transformer with Hexagonal Circuit and Regulating Autotransformer [PDF]
Problems of the Regional Energetics, 2021 The scope of the work was the study of the phase failure operating for the new FACT’s type phase-shifting device, intended for the flexible connection of AC power systems. The mathamatical model has been developed for conducting this study.
Bosneaga V., Suslov V.
doaj +1 more source
Autotransformer starting mode study for large compressor motor
You-qi chuyun, 2023 Compressor is the core process equipment of the refining and chemical enterprises, long-distance natural gas pipeline compressor stations, gas injection stations of gas storage, etc.
CUI Wanji
doaj +1 more source
IEEE Access, 2022 This paper presents the design and analysis of a special Rectifier Unit (RU) composed of a Delta-Differential Symmetric 18-pulse Autotransformer and cascade Boost converters for applications in More Electric Aircraft (MEA), which is denominated as RU ...
Ana L. Soares +4 more
doaj +1 more source
Zero sequence blocking transformers for multi-pulse rectifier in aerospace applications [PDF]
, 2014 The second session of the 109th Congress may well face decisions regarding the preparation of U.S. military forces for stability missions, a broad doctrinal term of which a major subset is peace operations. A November 28, 2005, Department of Defense (DOD)
Blaabjerg, Frede +4 more
core +8 more sources