Results 241 to 250 of about 3,116,587 (283)
Extraction of <i>Ficus carica</i> Polysaccharide by Ultrasound-Assisted Deep Eutectic Solvent-Based Three-Phase Partitioning System: Process Optimization, Partial Structure Characterization, and Antioxidant Properties. [PDF]
MoleculesSun Q +5 more
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Optimal tuning of PI based LF for three-phase SRF PLL synchronization system using pity beetle algorithm under grid abnormalities. [PDF]
Sci RepRiyas P, Lakshmanan SA.
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Exploration of Rapid Adaptation of First Contact Physiotherapy Services During the COVID-19 Pandemic: A Three-Phase Sequential Mixed-Methods Study Protocol. [PDF]
Health Sci RepAdeniji OA +5 more
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Journal of Combinatorial Designs, 2013
AbstractA 3‐phase Barker array is a matrix of third roots of unity for which all out‐of‐phase aperiodic autocorrelations have magnitude 0 or 1. The only known truly two‐dimensional 3‐phase Barker arrays have size 2 × 2 or 3 × 3. We use a mixture of combinatorial arguments and algebraic number theory to establish severe restrictions on the size of a 3 ...
Bell, Jason P. +4 more
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AbstractA 3‐phase Barker array is a matrix of third roots of unity for which all out‐of‐phase aperiodic autocorrelations have magnitude 0 or 1. The only known truly two‐dimensional 3‐phase Barker arrays have size 2 × 2 or 3 × 3. We use a mixture of combinatorial arguments and algebraic number theory to establish severe restrictions on the size of a 3 ...
Bell, Jason P. +4 more
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Three-phase NPC inverter using three-phase coupled inductor
2009 35th Annual Conference of IEEE Industrial Electronics, 2009A new NPC three-phase inverter with three-phase coupled inductor is presented in this paper. Initially the power stage diagram is shown and discussed. Their main characteristics are described and the more relevant waveforms, generated by simulation, are shown. Next, the employed modulation and converter operation are discussed and some relevant figures
Romeu Hausmann +2 more
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2007
The majority of electrical drive systems in use are powered by a so-called three-phase (three-wire) supply. The main reason for this is that a more efficient (moving from a two- to a three-wire system increases the transmitted power by 73 %) energy transfer from supply to the load, such as a three-phase AC machine, is possible in comparison with a ...
André Veltman +2 more
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The majority of electrical drive systems in use are powered by a so-called three-phase (three-wire) supply. The main reason for this is that a more efficient (moving from a two- to a three-wire system increases the transmitted power by 73 %) energy transfer from supply to the load, such as a three-phase AC machine, is possible in comparison with a ...
André Veltman +2 more
openaire +1 more source
Three-phase phacoemulsification
Journal of Cataract and Refractive Surgery, 1998In phase 1 of three-phase phacoemulsification, an endocapsular nuclear emulsification technique, two intersecting grooves divide the nucleus into four quadrants. The grooves are short and involve most of the thickness of the nucleus. In phase 2, the standard irrigation/aspiration flow is reversed by a valve. Fluid enters the eye via the ultrasound tip,
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Three-Phase Power System and Three-Phase Transformers
2011Single-phase systems are adequate for residential applications up to an apparent power S of 5 kVA (per residence), and 25 kVA single-phase pole transformers supply power to about 5–10 residences. In rural areas irrigation applications require single-phase motor ratings of up to 50 kVA.
Ewald F. Fuchs, Mohammad A. S. Masoum
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Transactions of the American Institute of Electrical Engineers, 1908
Based on the commonly accepted definition of power-factor, as “The ratio of true power to volt-amperes”, there can be no single factor that will exactly express such a physical relationship in a delta-connected, unsymmetrical, three-phase system.
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Based on the commonly accepted definition of power-factor, as “The ratio of true power to volt-amperes”, there can be no single factor that will exactly express such a physical relationship in a delta-connected, unsymmetrical, three-phase system.
openaire +1 more source
2018
Single-phase circuit with its detail analysis has been presented in the previous chapter. Three-phase circuits are most common for generation, transmission and distribution of electric power. Over single-phase circuits, three-phase circuits or systems have many advantages such as better voltage regulation and require only three-fourth weight of the ...
Md. Abdus Salam, Quazi Mehbubar Rahman
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Single-phase circuit with its detail analysis has been presented in the previous chapter. Three-phase circuits are most common for generation, transmission and distribution of electric power. Over single-phase circuits, three-phase circuits or systems have many advantages such as better voltage regulation and require only three-fourth weight of the ...
Md. Abdus Salam, Quazi Mehbubar Rahman
openaire +2 more sources