Results 21 to 30 of about 21,829,809 (355)

Study of electromagnetic processes in the system “contact network—electric locomotive” while reducing the minimum opening angle of the thyristors in the rectifier-inverter converter

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2020
A new method is proposed for increasing the power factor of an electric locomotive by changing the minimum opening angle of thyristors α0 of a rectifier-inverter converter.
Yu. M. Kulinich, D. Yu. Drogolov
doaj   +1 more source

New Topology of a Hybrid, Three-Phase, Four-Wire Shunt Active Power Filter

open access: yesEnergies, 2023
With a view to reducing harmonic content in electrical power systems, and, consequently, improving power quality level, filters and other harmonic compensation devices are widely used.
Stefani Freitas   +5 more
doaj   +1 more source

Comprehensive Power Losses Model for Electronic Power Transformer

open access: yesIEEE Access, 2018
The electronic power transformer (EPT) has higher power losses than the conventional transformer. However, the EPT can correct the power factor, compensate the unbalanced current, and reduce the line power losses in the distribution network.
Quanyou Yue   +6 more
doaj   +1 more source

An IPT Battery Charger With Near Unity Power Factor and Load-Independent Constant Output Combating Design Constraints of Input Voltage and Transformer Parameters

open access: yesIEEE transactions on power electronics, 2019
Inductive power transfer (IPT) techniques are becoming popular in battery charging applications due to some unique advantages compared to the conventional plug-in systems.
X. Qu   +3 more
semanticscholar   +1 more source

Experimental Identification of Critical Condition for Drastically Enhancing Thermoelectric Power Factor of Two-Dimensional Layered Materials. [PDF]

open access: yesNano letters (Print), 2018
Nanostructuring is an extremely promising path to high-performance thermoelectrics. Favorable improvements in thermal conductivity are attainable in many material systems, and theoretical work points to large improvements in electronic properties ...
Junwen Zeng   +18 more
semanticscholar   +1 more source

An Integral Battery Charger with Power Factor Correction for Electric Scooter [PDF]

open access: yes, 2009
This paper presents an integral battery charger for an electric scooter with high voltage batteries and interior-permanent-magnet motor traction drive.
E. Armando   +9 more
core   +1 more source

Voltage space vector‘s computation for current control in three phase converters

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2012
This work presents two current loop techniques, for three phase voltage source converters (VSC) used as controlled rectifiers (CR) operating at unity power factor.
Alberto Berzoy   +2 more
doaj   +1 more source

Organic Thermoelectric Multilayers with High Stretchiness

open access: yesNanomaterials, 2019
A stretchable organic thermoelectric multilayer is achieved by alternately depositing bilayers (BL) of 0.1 wt% polyethylene oxide (PEO) and 0.03 wt% double walled carbon nanotubes (DWNT), dispersed with 0.1 wt% polyacrylic acid (PAA), by the layer-by ...
Chungyeon Cho, Jihun Son
doaj   +1 more source

From Smart Metering to Smart Grid

open access: yesMeasurement Science Review, 2016
The paper deals with evaluation of measurements in electrical distribution systems aimed at better use of data provided by Smart Metering systems. The influence of individual components of apparent power on the power loss is calculated and results of ...
Kukuča Peter, Chrapčiak Igor
doaj   +1 more source

Analysis of energy losses reduction potential on the distribution line of campus building through electric power quality improvement

open access: yes, 2020
In public and commercial buildings, the reduction of electricity consumption activities can be conducted through 3 paths, including improving the quality level of electric power, increasing the efficiency of electrical equipment, and reducing the waste ...
Pawawoi, Andi   +7 more
core   +1 more source

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