Results 241 to 250 of about 9,565 (257)

A phase 2a study investigating the effects of ritlecitinib on brainstem auditory evoked potentials and intraepidermal nerve fiber histology in adults with alopecia areata. [PDF]

open access: yesPharmacol Res Perspect
Anderson S   +16 more
europepmc   +1 more source

A Review on the Generalized Formulations for Selective Harmonic Elimination (SHE-PWM) strategy

2020 IEEE First International Conference on Smart Technologies for Power, Energy and Control (STPEC), 2020
Better harmonics spectrum due to efficient elimination of dominant harmonics, Selective Harmonic Elimination (SHE-PWM) method has been extensively preferred for optimal control of multilevel inverters (MLI's). However, switching angle solution depends on the proper SHE problem formulation and solving techniques adopted. Various aspects which determines
Neerparaj Rai, Sandeep Chakravorty
openaire   +1 more source

A Selective Harmonic Elimination (SHE) Technique for the Multi-Leveled Inverters

2018 IEEE Electron Devices Kolkata Conference (EDKCON), 2018
The paper presents that the selective harmonics elimination (SHE) of the two, five and nine leveled inverters are carried out by the Newton-Raphson method as generic solutions of the transcendental equations. This approach establishes to evaluate the better performance of the power quality in terms of the height of the various orders of the harmonics ...
Writwik Balow, T. Halder
openaire   +1 more source

Improved Selective Harmonics Elimination Scheme With Online Harmonic Compensation for High-Power PWM Converters

IEEE Transactions on Power Electronics, 2014
To reduce the low-order harmonics produced by the high-power pulsewidth-modulated (PWM) converters, selective harmonic elimination (SHE) scheme is commonly used due to its superior harmonic performance at low switching frequency. However, as an off-line modulation technique, the SHE scheme itself lacks the capability to realize the active compensation ...
Ye Zhang   +3 more
openaire   +1 more source

Selective harmonic eliminated pulse-width modulation technique (SHE PWM) applied to three-level inverter/converter

2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692), 2004
The main interest of this study has been granted to the selective harmonic eliminated pulse width modulation technique, SHE PWM, for the control of single-phase and three-phase full-bridge three-level inverters. This study makes for any angle number (even or odd) of switches that composes the inverter, for purpose of comparison with the results found ...
Y. Sahali, M.K. Fellah
openaire   +1 more source

Performance improvement of induction motor by Selective Harmonic Elimination (SHE) using Newton Raphson (N-R) method

2015 International Conference on Energy Systems and Applications, 2015
The paper presents an induction motor model with improvised performance by unified approach for selective Harmonic Elimination (SHE) of 3-Phase Voltage Source Inverter (VSI). Due to switching in inverters harmonics are present, the performance of inverter can be improved by reducing the harmonics.
Tanushree Mistry   +3 more
openaire   +1 more source

Phase-inversion-based selective harmonic elimination (PI-SHE) in multi-level switched-mode tone- and frequency- modulated excitation

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2013
Switched-mode operation allows the miniaturization of excitation circuitry but suffers from high harmonic distortion. This paper presents a method of phase-inversion-based selective harmonic elimination (PI-SHE) and the use of multiple switching levels.
David M J, Cowell   +2 more
openaire   +2 more sources

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