Results 101 to 110 of about 120,275 (213)

Five-phase version of 12slots/8poles three-phase Synchronous Machine for Marine-propulsion [PDF]

, 2014
Multiphase machines are widely used in electric marine propulsion especially because of their fault-tolerance which allows to guarantee the propulsion even if a fault occurs in the electrical system.
SCUILLER, Franck, ZAHR, Hussein, SEMAIL, Eric, Eric Semail, Franck Scuiller, Hussein Zahr   +5 more
core   +1 more source

Some identities associated with degenerate harmonic and hyperharmonic numbers

Mathematical and Computer Modelling of Dynamical Systems
The study of degenerate versions of special polynomials and numbers has seen significant progress in recent years. In this paper, we establish several identities involving degenerate harmonic and hyperharmonic numbers, which are degenerate versions of ...
Qixiang Wang, Yanan Hei, Dmitry V. Dolgy, Taekyun Kim, Dae San Kim   +4 more
doaj   +1 more source

A NEW STRUCTURE OF FIVE-LEVEL DIODE CLAMPED INVERTER WITH REDUCING ITS ELEMENTS

Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ, 2018
At the high power switching circuit's applications, when the harmonic distortion is harmful, a multi-level diode clamped inverter is useful, especially when reduced total harmonic distortion and high power are desired.
Othman M. Anssari
doaj   +1 more source

Harmonic Functions on the Real Hyperbolic Ball II : Hardy and Lipschitz Spaces [PDF]

, 2004
In this paper, we pursue the study of harmonic functions on the real hyperbolic ball started in \cite{Ja3}. Our focus here is on the theory of Hardy-Sobolev and Lipschitz spaces of these functions.
Jaming, Philippe, Grellier, Sandrine
core  

Second order alternating harmonic number sums [PDF]

, 2016
We develop new closed form representations of sums of alternating harmonic numbers of order two and reciprocal binomial coefficients. Moreover we develop new integral representations in terms of harmonic numbers of order two.
Anthony Sofo, Sofo, Anthony
core   +1 more source

Harmonic minimization in a Chopper-type AC voltage controller [PDF]

, 1994
Electrical Engineering Department, College of Engineering, King Saud University, P.O. Box-800 Riyadh 11421, Saudi Arabia email: khaled@ksu.edu.saAn AC voltage regulator of the chopper-type presents an attractive alternative for AC voltage control.
Mohamadein, A.L., Addoweesh, K.E.
core  

The harmonic index for trees with given domination number [PDF]

Discrete Mathematics Letters, 2021
Xipeng Hu, Lingping Zhong
doaj   +1 more source

Uncertainty-Tolerant Harmonic Meter Placement in Power Systems With High Penetration of Harmonic Sources

IEEE Access
In modern power systems, the prevalence of harmonic distortion mandates robust monitoring. Harmonic monitoring faces formidable challenges due to significant uncertainties in measurements, network parameters, and the varying nature of harmonic sources ...
Ahmadreza Eslami, Michael Negnevitsky, Evan Franklin, Sarah Lyden   +3 more
doaj   +1 more source

The harmonic centroid as a predictor of string instrument timbral clarity [PDF]

, 2016
Spectrum is an important factor in determining timbral clarity. An experiment where listeners rate the changes in timbral clarity resulting from spectral equalization (EQ) can provide insight into the relationship between EQ and the clarity of string ...
Hummersone, C., Brookes, T., Hermes, K.
core  

Counting and Averaging Problems in Graph Theory [PDF]

, 2010
Paul Gunther (1966), proved the following result: Given a continuous function f on a compact surface M of constant curvature -1 and its periodic lift g to the universal covering, the hyperbolic plane, then the averages of the lift g over increasing ...
DOUMA, FEMKE
core