Results 21 to 30 of about 47,499 (264)
An Improved SHEPWM Modulation Algorithm for Three-levelEnergy Feedback Inverter
Kongzhi Yu Xinxi Jishu, 2021 The maximum switching frequency of high power converters is limited by the heat dissipation system and cannot be randomly increased. Consequently, increasing low-order harmonics are introduced into the grid.
WU Xuefeng +4 more
doaj
EURASIP Journal on Wireless Communications and Networking, 2020 Minimizing total harmonic distortion (THD) with less system complexity and computation time is a stringent constraint for many power systems. The multilevel inverter can have low THD when switching angles are selected at the fundamental frequency.
Muhammad Salman +7 more
doaj +1 more source
Online control of AC/AC converter based SHEPWM technique [PDF]
, 2014 Conventional online control of AC/AC converter controlled by the selective harmonic elimination pulse width modulation technique (SHEPWM) is based on storing the offline calculated switching angle values in a form of lookup table.
Darwish, M, Hashem, GM
core +1 more source
Spectrogram image encoding to provide variable audio data rates and preserve its sound quality
Безопасность информационных технологий, 2021 In the applications of audio control and fixation in the conditions of information-technical counteraction, noise clearing, formation of digital watermarks, audio fingerprinting, protective text audio markers, etc., a compact representation of speech ...
Sergey V. Dvoryankin +3 more
doaj +1 more source
New exact solutions for polynomial oscillators in large dimensions [PDF]
, 2003 A new type of exact solvability is reported. We study the general central polynomial potentials (with 2q anharmonic terms) which satisfy the Magyari's partial exact solvability conditions (this means that they possess a harmonic-oscillator-like wave ...
Gerdt, Vladimir P. +2 more
core +1 more source
Precise modelling of switching and conduction losses in cascaded h-bridge multilevel inverters [PDF]
, 2014 Nowadays, voltage source multilevel inverters are being used extensively in industry due to its many advantages, compared to conventional two level inverters, such as higher output voltage at low switching frequency, low voltage stress(dv/dt), lower ...
Alamri, B, Darwish, M
core +1 more source
Differential pharmacokinetics and pharmacokinetic/pharmacodynamic modelling of robenacoxib and ketoprofen in a feline model of inflammation [PDF]
, 2014 Robenacoxib and ketoprofen are acidic nonsteroidal anti‐inflammatory drugs (NSAIDs). Both are licensed for once daily administration in the cat, despite having short blood half‐lives.
Arifah +48 more
core +3 more sources
Parallel resultant elimination algorithm to solve the selective harmonic elimination problem
IET Power Electronics, 2016 Although the resultant elimination method can get all the possible solutions for the selective harmonic elimination (SHE) problem without the selection of initial values, it still has some fatal shortcomings, such as the high computation burden and the huge memory consumption caused by the intermediate expression swell in the ...
Kehu Yang +4 more
openaire +1 more source
Gong-kuang zidonghua, 2014 For lack of research of nonlinear and linear solution algorithms of selected harmonics elimination pulse width modulation used in the same level topology of inverter, a nonlinear solution equation based on homotopy algorithm and a linear solution model ...
PAN Hongying, LI Song
doaj +1 more source
Optimal design of single-tuned passive filters using response surface methodology [PDF]
, 2015 This paper presents an approach based on Response Surface Methodology (RSM) to find the optimal parameters of the single-tuned passive filters for harmonic mitigation.
Abdel Aleem, SHE +4 more
core +1 more source