Results 41 to 50 of about 36,146 (304)

Assisted software design of a wide variety of windings in rotating electrical machinery [PDF]

open access: yes, 2014
In this paper a software developed by the Authors for winding design is presented. In particular, this software can be used as a valid aid in design and analysis for a wide variety of windings with generic number of phases, pole pairs, slot number, etc ...
DI TOMMASO, Antonino Oscar   +3 more
core   +1 more source

Loss characteristics investigation of FSCW-PMSM under SVPWM inverter supply

open access: yes电力工程技术, 2023
To investigate the effects of time-harmonic current introduced by inverter on loss characteristics of fractional-slot concentrated-winding permanent magnet synchronous machine (FSCW-PMSM), a method is proposed to analyze the harmonic characteristics of ...
CHEN Zhenfei   +4 more
doaj   +1 more source

Non-collinear interaction of photons with orbital angular momentum [PDF]

open access: yes, 2013
We elucidate the consequences of a phase-matching theory that describes second-harmonic generation of two non-collinear incident light beams that carry orbital angular momentum (OAM).
Faccio, Daniele   +3 more
core   +2 more sources

Brushless Operation of Axial-Flux Wound-Rotor Synchronous Machine Utilizing Third Harmonic

open access: yesMathematics
The brushless operation presented in this study is of an axial-flux wound-rotor synchronous machine (AFWRSM) which uses the third harmonic and the fundamental components of current.
Syed Mehdi Abbas   +4 more
doaj   +1 more source

Non-Sinusoidal Loading Effect on Oil Immersed Power Transformers [PDF]

open access: yesEngineering and Technology Journal, 2011
Transformers are usually designed for nominal frequency and sinusoidal load current. Nowadays, usage of non-linear loads such as power electronics loads has extremely increased.
Mohammed k.Edan
doaj   +1 more source

A General Mathematical Formulation for the Determination of Differential Leakage Factors in Electrical Machines with Symmetrical and Asymmetrical Full or Dead-Coil Multiphase Windings [PDF]

open access: yes, 2018
This paper presents a simple and general mathematical formulation for the determination of the differential leakage factor for both symmetrical and asymmetrical full and dead-coil windings of electrical machines.
Caruso M.   +4 more
core   +1 more source

Optimal Modeled Six-Phase Space Vector Pulse Width Modulation Method for Stator Voltage Harmonic Suppression [PDF]

open access: yes, 2018
Dual Y shift 30 six-phase motors are expected to be extensively applied in high-power yet energy-effective fields, and a harmonic-suppressing control strategy plays a vital role in extending their prominent features of low losses and ultra-quiet ...
Luo, Qiwu   +3 more
core   +2 more sources

Non-geometric branes are DFT monopoles [PDF]

open access: yes, 2016
The double field theory monopole solution by Berman and Rudolph is shown to reproduce non-geometric backgrounds with non-vanishing Q- and R-flux upon an appropriate choice of physical and dual coordinates. The obtained backgrounds depend non-trivially on
Bakhmatov, Ilya   +2 more
core   +2 more sources

Wind-induced odd gravitational harmonics of Jupiter [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society: Letters, 2015
Abstract While the rotational distortion of Jupiter makes a major contribution to its lowermost order even zonal gravitational coefficients Jn with n ≥ 2, the component of the zonal winds with equatorial antisymmetry, if sufficiently deep, produces a gravitational signature contained in the odd zonal gravitational coefficients Jn with n ≥
Kong, Dali   +2 more
openaire   +2 more sources

Three-phase modular permanent magnet brushless machine for torque boosting on a downsized ICE vehicle [PDF]

open access: yes, 2005
The paper describes a relatively new topology of 3-phase permanent magnet (PM) brushless machine, which offers a number of significant advantages over conventional PM brushless machines for automotive applications, such as electrical torque boosting at ...
Howe, D., Wang, J.B., Xia, Z.P.
core   +1 more source

Home - About - Disclaimer - Privacy