Results 91 to 100 of about 514 (145)

Optimization of the Harmonic in AC Drive Locomotive and EMUs

open access: yesKongzhi Yu Xinxi Jishu, 2016
   Harmonic content is one of the most important indexes in AC drive locomotive and EMUs. It firstly introduced four types of on-board passive filters and their working principles, such as series inductance, LCL filter, RC filter, RLC filter and so on ...
ZHANG Zhibing, ZHANG Zhixue, CHEN Zhibo
doaj  

Design and implementation of a three-level single-phase H-bridge inverter using SHE-PWM

open access: yesDiscover Electronics
The need to generate a pure sinusoidal signal with very low Total Harmonic Distortion (THD) motivates the search for the most effective modulation technique among existing methods.
Jalil Akaaboune   +3 more
doaj   +1 more source

THDv Reduction in Multilevel Three-Phase Inverters Using the SHE-PWM Technique with a Hybrid Optimization Algorithm

open access: yesEnergies
The following article aims to implement a hybrid modulation methodology based on the Selective Harmonic Elimination Pulse Width Modulation (SHE-PWM) technique to work with the fundamental frequency of the system and find the optimal firing angles using ...
Miguel Ayala   +3 more
doaj   +1 more source

Determination of minimal total harmonic distortion for single-phase multilevel inverter [PDF]

open access: yes
Multilevel inverters (MLIs) offer numerous advantages, such as low voltage stresses on power switches, low switching losses, and high efficiency. Switching angles applied to MLI must be selected carefully to generate an output voltage waveform with low ...
Ahmad, Noor Syafawati   +7 more
core   +2 more sources

Application of soft computing algorithms for hybrid modular multilevel inverters

open access: yesMeasurement: Sensors
This study utilized Harris Hawk optimization to analyze the harmonic distortions of a symmetric capacitor based multilevel converter. The proposed multilevel converter uses identical and symmetric DC sources in its input.
Devineni Gireesh Kumar   +9 more
doaj   +1 more source

Análisis y diseño de un puente inversor trifásico VSI controlado mediante SVM utilizando un microcontrolador [PDF]

open access: yes, 2014
La electrónica de potencia como una rama de la ingeniera eléctrica toma gran importancia para los sistemas eléctricos; se enfoca a diario en el estudio de dispositivos y/o elementos de mayor eficiencia.
Aguirre Díaz, Jonathan Alejandro   +1 more
core  

A Novel NR-DA-Based ANN for SHEPWM in Cascaded Multilevel Inverters for Renewable Energy Applications

open access: yesInternational Transactions on Electrical Engineering and Computer Science
Harmonics is the major power quality problem caused by nonlinear devices, leading to malfunction or operational halt of the system. Low-order harmonics increase vibration and heat generation in motors.
D. Vasavi Krishna   +2 more
doaj   +1 more source

Harmonics elimination based on curve fitting method for modular multilevel converters [PDF]

open access: yes, 2017
This paper presents the additional ways to figure out the switching angles for eliminating harmonic in Modular Multilevel Converters, MMCs. The switching angles equation is written in terms of nonlinear equation system, in general, one of the numerical ...
Aboadla, Ezzidin Hassan Elmabrouk   +8 more
core  

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