Results 111 to 120 of about 3,163 (202)

Catalytic oxidation of trace levels of methane in oxygen in a tubular reactor [PDF]

An experimental investigation of catalytic oxidation of trace levels of methane in oxygen was conducted in a tubular reactor. Two noble metal solid catalysts were explored: a 1-percent platinum on gamma alumina and a 0.5-percent rhodium on gamma alumina.
Caenepeel, C. L., Warshay, M.
core   +1 more source

Novel clamping modulation for three‐phase buck‐boost ac choppers

Electronics Letters
Three‐phase ac choppers feature output voltage amplitude controllability and enable more compact system realizations compared to autotransformers. For the practical realization advantageously standard power transistor with unipolar voltage blocking ...
David Menzi, Aobo Yang, Saransh Chhawchharia, Johann. W. Kolar   +3 more
doaj   +1 more source

A Deep Learning Approach for the Automated Classification of Geomagnetically Induced Current Scalograms

Applied Sciences
During geomagnetic storms, which are a result of solar wind’s interaction with the Earth’s magnetosphere, geomagnetically induced currents (GICs) begin to flow in the long, high-voltage electrical networks on the Earth’s surface.
Tatyana Aksenovich, Vasiliy Selivanov
doaj   +1 more source

Evaluation of the efficiency of a low voltage autotransformer

Measurement: Energy
In many developing countries, low-voltage autotransformers are commonly used in residential settings to compensate for persistent voltage irregularities in the electrical distribution network. Despite their widespread use, few studies have systematically
Edwin Garabitos-Lara, José Miguel Mateo-Beltré, Jesús Manuel Silva-García   +2 more
doaj   +1 more source

Fault Identification Method for Flexible Traction Power Supply System by Empirical Wavelet Transform and 1-Sequence Faulty Energy

World Electric Vehicle Journal
The 2 × 25 kV flexible traction power supply system (FTPSS), using a three-phase-single-phase converter as its power source, effectively addresses the challenges of neutral section transitions and power quality issues inherent in traditional power supply
Jiang Lu, Shuai Wang, Shengchun Yan, Nan Chen, Daozheng Tan, Zhongrui Sun   +5 more
doaj   +1 more source

Flat plate electrohydrodynamic heat pipe experiments [PDF]

Performance capabilities of electrohydrodynamic (EHD) flat heat pipes were investigated using Freon 113 and Freon 11 as working fluids. All of the pipes employed straight rod electrodes to form axial liquid flow channels and tranverse grooves for ...
Loehrke, R. I., Sebits, D. R.
core   +1 more source

Multifunctional Polymer Composites Produced by Melt-Blown Technique to Use in Filtering Respiratory Protective Devices. [PDF]

Materials (Basel), 2020
Brochocka A, Nowak A, Majchrzycka K, Puchalski M, Sztajnowski S.   +4 more
europepmc   +1 more source

UNIVERSAL THEORY OF AUToTRANSFORMER [PDF]

St. Petersburg State Polytechnical University Journal, 2015
openaire   +1 more source

Load insensitive electrical device [PDF]

, 1974
A class of power converters is described for supplying direct current at one voltage from a source at another voltage. It includes a simple passive circuit arrangement of solid-state switches, inductors, and capacitors by which the output voltage of the ...
Schwarz, F. C.
core   +1 more source

Investigation of Heat Transfer From [PDF]

The convective heat transfer from the surface of an ellipsoidal forebody of fineness ratio 3 and 20-inch maximum diameter was investigated in clear air for both stationary and rotating operation over a range of conditions including air speeds up to 240 ...
Lewis, James P., Ruggeri, Robert S.
core   +1 more source