Results 31 to 40 of about 6,505 (303)

Modified phase-shifted PWM control for flying capacitor multilevel converters

open access: yes, 2007
The issue of voltage imbalance remains a challenge for the flying capacitor multilevel converter. The phase-shifted pulsewidth modulation (PS-PWM) method has a certain degree of self-balancing properties.
Chunmei Feng   +5 more
core   +1 more source

An Overview of Applications of the Modular Multilevel Matrix Converter

open access: yesEnergies, 2020
The modular multilevel matrix converter is a relatively new power converter topology suitable for high-power alternating current (AC)-to-AC applications.
Matias Diaz   +7 more
doaj   +1 more source

System Level Real-Time Simulation and Hardware-in-the-Loop Testing of MMCs

open access: yesEnergies, 2021
In this paper we present an approach for real-time simulation and Hardware-in-the-Loop (HIL) testing of Modular Multilevel Converters (MMCs) that rely on switching models while supporting system level analysis.
Michele Difronzo   +4 more
doaj   +1 more source

A VSC transmission system using flying capacitor multilevel converters and selective harmonic elimination pWM control

open access: yes, 2005
A transmission system based on voltage-source three-level flying capacitor (FC) multilevel converters with selective harmonic elimination pulse-width modulation (SHE-PWM) control is presented in this paper.
Lie Xu   +3 more
core   +1 more source

Control of AC/DC Modular Multilevel Converter

open access: yesElektronika ir Elektrotechnika, 2018
In recent years, a special attention is paid to grid connected multilevel converters. These converters have specific use in industry in a high power, medium-voltage and high-voltage applications. This paper presents new control algorithm for single-phase
Vojtech Blahnik   +3 more
doaj   +1 more source

Study of the Modulation Schemes in the Hybrid Three-Phase Multilevel Inverter

open access: yesEletrônica de Potência, 2017
This work proposes and analyzes modulation strategies for a hybrid three- phase multilevel inverter, which employs two different topologies in a cascade connection, a three-phase Neutral Point Clamped (NPC) converter and single- phase half-bridge ...
Marcos Vinicius Bressan   +2 more
doaj   +1 more source

VSC transmission system using flying capacitor multilevel converters and hybrid PWM control

open access: yes, 2007
A high-voltage direct current (HVDC) transmission system based on three-level flying capacitor (FC) multilevel converters with hybrid pulse-width modulation (PWM) is presented in this paper.
Agelidis, V.G., Xu, L.
core   +1 more source

Application of Simplified Neutral Point Clamped Multilevel Converter in a Small Wind Turbine

open access: yesElectrical, Control and Communication Engineering, 2014
In low power distributed generation systems low cost together with the energy quality requirements are a key element. It is known that quality of voltage waveforms generated from multilevel converters is better in comparison with those from two-level ...
Mlodzikowski Pawel   +2 more
doaj   +1 more source

Modelling approaches for DC-DC converters with switched capacitors

open access: yes, 2015
In this paper we review relevant problems in the modelling of DC-DC converters with switched capacitors. We study several approaches that overcome the exposed modelling difficulties, addressing ideal and nonideal cases and using dynamic equations that ...
Rapisarda, P.   +2 more
core   +1 more source

Bandwidth considerations for multilevel converters

open access: yes, 1999
Multilevel converters can achieve an overall effective switch frequency multiplication and consequent ripple reduction through the cancellation of the lowest order switch frequency terms.
Walker, Geoffrey, Ledwich, Gerard
core   +1 more source

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