Results 11 to 20 of about 30,704,010 (205)
Early life exposure to farm animals and symptoms of asthma, rhinoconjunctivitis and eczema : an ISAAC Phase Three study [PDF]
, 2012 We are grateful to the children and parents who willingly cooperated and participated in ISAAC Phase Three and the coordination and assistance by the school staff is sincerely appreciated.
Brunekreef, Bert +6 more
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Performance Evaluation of a PV-Based Multilevel Inverter with Improved THD and Efficiency [PDF]
Journal of Applied Research in Electrical EngineeringThis work presents the design, simulation, and performance evaluation of a three-phase multilevel inverter (MLI) system integrated with photovoltaic (PV) technology for grid-connected applications.
Parimalasundar Ezhilvannan +2 more
doaj +1 more source
IEEE Access, 2022 The performance of a grid forming inverter integrating solar PV/Wind farms with the grid is currently a topic of wide interest. Synchronverter control is one of the well-known grid forming converter techniques. Evaluation of synchronverter control in the
Ajinkya J. Sonawane, Amod C. Umarikar
doaj +1 more source
Global variation in the prevalence and severity of asthma symptoms : phase three of the International Study of Asthma and Allergies in Childhood (ISAAC) [PDF]
, 2009 Background: Phase Three of the International Study of Asthma and Allergies in Childhood (ISAAC) measured the global prevalence and severity of asthma symptoms in children.
Foliaki, S. +7 more
core +1 more source
Energies, 2021 The article presents various concepts of three-phase power rectifiers with improved quality of converted electric power. This effect is obtained by modulating the currents in the DC output circuits of the rectifiers by means of power electronics ...
Tomasz Pajchrowski +2 more
doaj +1 more source
Hardware for classification of power quality problems in three phase system using Microcontroller
Cogent Engineering, 2017 Power quality is a growing concern as the number of electric sensitive loads is increasing day by day in all fields. Poor power quality is badly affecting sensitive loads causing instability, malfunctioning, loss of data and great loss of economy.
S. Asha Kiranmai, A. Jaya Laxmi
doaj +1 more source
Three-Phase to Single-Phase Generation System Based on Doubly-Fed Induction Generator
Eletrônica de Potência, 2020 This paper presents a three-phase to singlephase six-leg converter for a wind energy conversion system based on Doubly-Fed Induction Generator (DFIG).
Filipe V. Rocha +4 more
doaj +1 more source
IEEE Access, 2022 With the increased installation of single-phase rooftop PV systems, in-house battery storage units, and high-power plug-in loads (i.e., EVs) at single-phase residential sites, it is prevalent that an increasing number of residential distribution systems ...
Syed A. Raza, Jin Jiang
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Real-Time Three-Phase Dynamic Full ACPF Distribution System Model
Yanbu Journal of Engineering and Science, 2022 Power flow is the backbone for power system operation and control. Power system balancing, where supply of energy has to equal demand all time, is a very important operation constraint for electric power systems.
Sultan Hakmi Jr.
doaj +1 more source
Improving Inverter Output Current Controller Under Unbalanced Conditions by Using Virtual Impedance
IEEE Access, 2021 Nowadays, three-phase inverters have been commonly used in power systems, especially in renewable energy and motor drives applications. In many applications, the inverter has to generate balanced sinusoidal three-phase currents even though it is ...
Lukas Antonio Budiwicaksana +4 more
doaj +1 more source