Results 21 to 30 of about 3,116,587 (283)
IEEE Access, 2020 Three-phase gas-oil-water flow is an important type of flow present in petroleum extraction and processing. This paper reports a novel threshold-based method to visualize and estimate the cross-sectional phase fraction of gas-oil-water mixtures.
Felipe D. A. Dias +6 more
doaj +1 more source
Energies, 2020 A complete analysis of the ac output current ripple in four-leg voltage source inverters considering multiple modulation schemes is provided. In detail, current ripple envelopes and peak-to-peak profiles have been determined in the whole fundamental ...
Riccardo Mandrioli +4 more
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Autonomous Three-Phase Induction Generator Supplying Unbalanced Loads
Advances in Electrical and Computer Engineering, 2013 This paper presents a control method for a stand-alone micro hydro with induction generator (IG) supplying unbalanced three-phase loads. Besides voltage and frequency regulation, the phase balancing is ensured for this particular operating regime.
ION, C. P., MARINESCU, C.
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Dynamics of a three-phase upflow fixed bed catalytic reactor [PDF]
, 1999 A dynamic model of an upflow fixed-bed catalytic reactor is developed to examine numerically transient axial temperature and concentration profiles obtained for the consecutive hydrogenation of 1,5,9-cyclododecateriene on a Pd/Al2O3 catalyst.
Delmas, Henri +4 more
core +2 more sources
A Novel Three-phase Converter Using Three-phase Series Chopper
IEEJ Transactions on Industry Applications, 1999 This paper proposes a novel three-phase converter using three-phase series chopper. The proposed circuit is composed by three switching devices, three-phase diode bridge, input reactors, and LC low pass filter. In the conventional circuit which combines three-phase diode bridge and boost voltage chopper, to obtain sinusoidal input current the output ...
Jun-Ichi Itoh, Kouetsu Fujita
openaire +2 more sources
IEEE Access, 2019 Multiphase machines have attracted significant attention in both academic and industrial sectors as candidates for high-power safety-critical applications as well as wind energy conversion systems.
Ayman S. Abdel-Khalik +2 more
doaj +1 more source
Direct torque control for dual three-phase induction motor drives [PDF]
, 2004 A direct torque control (DTC) strategy for dual three-phase induction motor drives is discussed in this paper. The induction machine has two sets of stator three-phase windings spatially shifted by 30 electrical degrees.
Bojoi, R. +4 more
core +1 more source
Factors associated with body mass index in children and adolescents: An international cross-sectional study. [PDF]
PLoS ONE, 2018 The increasing prevalence of overweight and obesity in childhood has implications for their future health. There are many potential contributors to overweight and obesity in childhood.
Edwin A Mitchell +7 more
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Applied Sciences, 2020 Wind energy harvesting is a widespread mature technology employed to collect energy, but it is also suitable, and not yet fully exploited at small scale, for powering low power electronic systems such as Internet of Things (IoT) systems like structural ...
Borja Pozo +5 more
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Analysis of Input Voltage Switching Ripple in Three-Phase Four-Wire Split Capacitor PWM Inverters
Energies, 2020 Three-phase, four-wire split capacitor inverters are currently employed in many applications, such as photovoltaic systems, battery chargers for electric vehicles, active power filters, and, in general, in all grid-tied applications that deal with ...
Manel Hammami +4 more
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