Results 31 to 40 of about 2,379,418 (298)
DETERMINATION OF ACTIVE POWER LOSSES COMPONENTS IN LONG-DISTANCE AC POWER TRANSMISSION
Tekhnichna Elektrodynamika, 2022 The components of active power losses in long-distance AC power transmission are investigated. It is shown that in the modes of low and medium loads the main share of losses are corona losses. The imperfection of the current method of determining the corona power losses, which are climatic in nature, determines the method of separating these losses ...
T.L. Katsadze +3 more
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Analysis of AC link topologies in non-isolated DC/DC triple active bridge converter for current stress minimization [PDF]
, 2017 This paper presents analysis of the non-isolated DC/DC triple active bridge (TAB) converter under various purely inductor-based AC link topologies. The objective of the analysis is to find the topology that incorporates the least value of the AC link ...
Aboushady, Ahmed A. +2 more
core +3 more sources
Low insertion loss microplasma-based limiter integrated into a microstrip bandpass filter [PDF]
, 2015 The use of microplasma discharges as power-induced limiter elements in microstrip devices is proposed to protect receivers against high-power microwave threats.
Callegari, Thierry +5 more
core +1 more source
Zero loss magnetic metamaterials using powered active unit cells
Optics Express, 2009 We report the design and experimental measurement of a powered active magnetic metamaterial with tunable permeability. The unit cell is based on the combination of an embedded radiofrequency amplifier and a tunable phase shifter, which together control the response of the medium. The measurements show that a negative permeability metamaterial with zero
Yu, Yuan +2 more
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Efficiency improvement and power loss breakdown for a Lundell-alternator/active-rectifier system in automotive applications [PDF]
, 2017 A control strategy for a conventional Lundell alternator and an active-rectifier using different modulation schemes was proposed in previous work. The modulation techniques examined indicated that the system could operate more efficiently than a passive ...
Flack, Timothy J. +5 more
core +1 more source
ENERGY SAVING DURING OPERATION OF EQUIPMENT WITH NON-CONTROLLED ELECTRIC DRIVE IN LOCOMOTIVE DEPOT
Nauka ta progres transportu, 2016 Purpose. To conduct research of electric motors in order to obtain the results that will assess the degree of energy saving due to electric loss reduction in the equipment with non-controlled electric drive. Methodology. The paper proposes an engineering
L. V. Dubynets +3 more
doaj +1 more source
ACTIVE POWER LOSS REDUCTION BY FIREFLY ALGORITHM
International Journal of Research -GRANTHAALAYAH, 2018 This paper proposes a swarm intelligence algorithm, called Firefly Mating Algorithm (FMA) for solving optimal reactive power problem. FMA uses genetic algorithm as the core of the algorithm. The main feature of the algorithm is a novel mating pair selection method which is inspired by the following two mating behaviours of fireflies in nature: (i) the ...
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ACTIVE POWER LOSS REDUCTION BY SYNTHESIZED ALGORITHM
International Journal of Research -GRANTHAALAYAH, 2018 In this paper, Synthesized Algorithm (SA) proposed to solve the optimal reactive power problem. Proposed Synthesized Algorithm (SA) is a combination of three well known evolutionary algorithms, namely Differential Evolution (DE) algorithm, Particle Swarm Optimization (PSO) algorithm, and Harmony Search (HS) algorithm. It merges the general operators of
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Analysis of loss distribution for power devices of active neutral point clamped three-level inverter
Gong-kuang zidonghua, 2014 In view of problem of uneven loss distribution of power devices in running process of traditional neutral point clamped three level inverter, this paper introduced working principle and basic modulation strategy of active neutral point clamped three ...
ZHAO Xia +4 more
doaj +1 more source
Pakistan Journal of Engineering & Technology, 2021 Electrical energy has become the most essential requirement for working of today’s modern world. Power distribution networks (PDN) are required for providing power from substations to consumers but are subjected to power loss and voltage drop problems ...
Ayesha Azhar, Aftab Ahmad
doaj +1 more source