Results 21 to 30 of about 4,210,114 (293)

ESTIMATION OF LOSSES IN THE MULTI-PHASE FREQUENCY CONVERTERS FOR ELECTRIC GROUND TRACTION SYSTEM OF AIRCRAFT

Известия высших учебных заведений: Проблемы энергетики, 2017
Improving the energy efficiency of vehicles is an essential feature of scientific and technical progress. One means of increasing the energy efficiency of transport is the introduction of electric drive with multiphase induction motors.
A. G. Logacheva, R. R. Khusnutdinov, I. O. Aymetov   +2 more
doaj   +1 more source

High efficiency smart voltage regulating module for green mobile computing [PDF]

, 2014
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.In this thesis a design for a smart high efficiency voltage regulating module capable of supplying the core of modern microprocessors incorporating dynamic ...
Tapou, Monaf Sabri
core   +7 more sources

Switched Z-Source/Quasi-Z-Source DC-DC Converters With Reduced Passive Components for Photovoltaic Systems

IEEE Access, 2019
In this paper, switched Z-source/quasi-Z-source dc-dc converters (SZSC/SQZSCs) are proposed for the photovoltaic (PV) grid-connected power system, where the high step-up dc-dc converters are required to boost the low voltage to high voltage.
Junfeng Liu, Jialei Wu, Jianyong Qiu, Jun Zeng   +3 more
doaj   +1 more source

Power quality improvement using dynamic voltage restorer in electrical distribution system: an overview [PDF]

, 2020
This paper represents a review of the dynamic voltage restorer for power quality improvement in the electrical distribution system. Over the past 50 years, issues concerning power quality have steadily increased, to prevent the effect of the voltage ...
Ali Basim Mohammed, Sofia Najwa Ramli, Mohammed, Ali Basim, Ramli, Sofia Najwa, Mohd Aifaa Mohd Ariff, Najwa Ramli, Sofia, Mohd Ariff, Mohd Aifaa   +6 more
core   +1 more source

High-Performance Voltage-Boost Switched-Coupled-Inductor DC–DC Converters Deduced From Impedance Source Networks

IEEE Open Journal of Industry Applications
This article proposes a switched-coupled-inductor impedance source network integrating capacitor-winding-diode technology. Next, voltage-boost switched-coupled-inductor dc–dc converters based on the proposed impedance source network are deduced ...
Yuliang Ji, Lina Geng
doaj   +1 more source

Voltage Waveform and Voltage Boost Ratio of Quasi Z Source DC Converters

IEEE Access
In order to optimize the voltage waveforms of quasi Z source converters and investigate their effects on voltage boost ratio, the LTspice software is used to conduct a simulation study on quasi Z source converters after theoretical analysis.
Sheng Qu
doaj   +1 more source

Modified phase-shifted PWM control for flying capacitor multilevel converters [PDF]

, 2007
The issue of voltage imbalance remains a challenge for the flying capacitor multilevel converter. The phase-shifted pulsewidth modulation (PS-PWM) method has a certain degree of self-balancing properties.
Chunmei Feng, Vassilios G. Agelidis, Liang, J., Agelidis, V.G., Jun Liang, Feng, C.   +5 more
core   +2 more sources

Impacts on Power Factor of AC Voltage Controllers Under Non-Sinusoidal Conditions [PDF]

Mehran University Research Journal of Engineering and Technology, 2012
AC-AC conversion is obtained with the help of Cyclo-converters, DC Link converters and AC Voltage Controllers. AC voltage controllers are also referred to as voltage regulators.
Mukhtiar Ahmed Mahar, Abdul Sattar Larik, Syed AsifAli Shah   +2 more
doaj  

New mathematical model for analysing three-phase controlled rectifier using switching functions [PDF]

, 2010
This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library.The aim of this study is
Marouchos, C, El-Habrouk, M, El-Habrouk, Mohamed, Darwish, MK, Marouchos, Christos, Darwish, Mohamed K.   +5 more
core   +1 more source

Sequence-current control strategies for transformerless voltage-source converters in islanded grids of AC/DC distribution system under asymmetrical ground faults

International Journal of Electrical Power & Energy Systems
Islanded grids play a crucial role in AC/DC distribution systems. The adoption of transformerless voltage-source converters as the primary power source is an important development direction for AC/DC distribution systems.
Yuze Li, Peng Guo, Qianming Xu, Josep M. Guerrero, Yufei Yue   +4 more
doaj   +1 more source