Results 251 to 260 of about 20,682 (300)

Size Dependent Uncatalyzed Sulfite Oxidation in Aqueous Microdroplets. [PDF]

open access: yesEnviron Sci Technol
Gong K   +5 more
europepmc   +1 more source

Hydrodynamical pathways in the phase change of real fluids.

open access: yes
Gallo M   +3 more
europepmc   +1 more source

Driving multiphase superconductivity

Science, 2021
Breaking local symmetry opens up a clear transition between superconducting ...
Pourret, Alexandre, Knebel, Georg
openaire   +4 more sources

Asymmetric modes in multiphase electric drives

2020 XI International Conference on Electrical Power Drive Systems (ICEPDS), 2020
The method of symmetrical components is used to study the influence of power supply asymmetry and / or electromagnetic asymmetry of the electric motor on energy losses and electromagnetic torque pulsations. It is shown that in multiphase motors, asymmetry results in additional losses due to the appearance of the symmetrical components of the ...
Valentin Tomasov   +4 more
openaire   +1 more source

Dual excitation multiphase electrostatic drive

IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting, 2002
A novel electrostatic drive technology, named the dual excitation multiphase electrostatic drive (DEMED) is presented. A basic DEMED consists of two plastic films in which three-phase parallel electrodes are embedded and is driven by three-phase AC excitation to the electrodes.
T. Niino, T. Higuchi, S. Egawa
openaire   +1 more source

Sigma-Delta modulation for multiphase drives

2009 35th Annual Conference of IEEE Industrial Electronics, 2009
Sigma-Delta Modulation (SDM) technique, well known in the telecommunication industry, has recently shown its feasibility in conventional three phase power converters. In this paper, the SDM method is extended for the voltage modulation of multiphase power converters.
J. Prieto, F. Barrero, S. Toral
openaire   +1 more source

Multiphase machine drives

2019
Variable-speed AC drives are nowadays based on three-phase electrical machines fed by power electronic converters acting as power interface between the electrical machine and AC or DC power sources. Nevertheless, in the last two decades the multiphase electrical drives have become an interesting alternative for particular applications.
Bojoi R., Zarri L.
openaire   +2 more sources

Multiphase Induction Motor Drives

IET Chennai 3rd International Conference on Sustainable Energy and Intelligent Systems (SEISCON 2012), 2012
Recent research articles mostly addressing towards multiphase inverter fed multiphase induction motors due to their redundant structure, and reliability with high fault tolerant capabilities. Benefits over the traditional three-phase motors are, by reducing the amplitude and increasing the frequency of torque pulsations, lowering the rotor harmonic ...
openaire   +1 more source

Multiphase hybrid traction drives for electrical vehicles

2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2014
The prospects for the use of multiphase (i.e. having the number of phases more than four) asynchronous linear and non-linear drives in the field of vehicles were presented and described in a number of papers. However the increase of the phase number of asynchronous electric drive system allows not only to improve a number of its technical-and-economic ...
Andrey V. Brazhnikov   +5 more
openaire   +1 more source

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