Results 21 to 30 of about 6,872,512 (287)

High Quality NLM Method for Medium Voltage Hybrid Bridge MMC [PDF]

open access: yesE3S Web of Conferences, 2021
Medium voltage hybrid bridge multilevel converter (MMC) usually has a lower number of links. Therefore, the traditional Nearest Level Modulation (NLM) method has the problems of low equivalent switching frequency and poor output quality.
Jiaxiong YE   +4 more
doaj   +1 more source

Analysis and Implementation of a Phase-Shift Pulse-Width Modulation Converter with Auxiliary Winding Turns [PDF]

open access: yesEnergies, 2020
A phase-shift pulse-width modulation converter is studied and investigated for railway vehicle or solar cell power converter applications with wide voltage operation. For railway vehicle applications, input voltage range of dc converters is requested to have 30–40% voltage variation of the nominal input voltage.
openaire   +2 more sources

An optimization method for reducing the voltage fluctuation of the floating‐capacitor in ANPC five‐level inverter

open access: yesIET Power Electronics, 2023
The excessive fluctuation of the floating capacitance's (FCs) voltage affects the output performance and output power of the 3P‐5L‐ANPC converter. In order to minimize the fluctuation of the FCs voltage, an optimization control method based on zero ...
Zhan Liu   +5 more
doaj   +1 more source

Design and Hardware Implementation Considerations of Modified Multilevel Cascaded H-Bridge Inverter for Photovoltaic System

open access: yesIEEE Access, 2019
Inverters are an essential part in many applications including photovoltaic generation. With the increasing penetration of renewable energy sources, the drive for efficient inverters is gaining more and more momentum. In this paper, output power quality,
Shuvangkar Shuvo   +5 more
doaj   +1 more source

Asymmetrical carrier phase‐shifted pulse‐width modulation for partly regenerative converter

open access: yesIET Power Electronics, 2017
A cascaded H‐bridge‐based partly regenerative converter is a low‐cost scheme to enable a medium‐voltage motor drive to feed back the braking energy to the grid. However, its asymmetrical topology induces serious switching harmonic distortion on the motor side when conventional symmetrical carrier phase‐shift pulse‐width modulation (SCPS‐PWM) is used ...
Xiaoming Zha   +5 more
openaire   +1 more source

PWM-based PPM format for dimming control in visible light communication system [PDF]

open access: yes, 2012
We report simulation results of pulse width modulation (PWM)-based pulse position modulation (PPM) signal format for visible light communication systems. For simultaneous operation of data transmission and dimming control, PPM data format is added to PWM
Jang, Hyung-Joon   +7 more
core   +1 more source

Phase accumulated carrier pulse width modulation

open access: yes, 2015
An alternative approach to digital PWM generation uses an accumulator rather than a counter to generate the carrier. This offers several advantages.
Gerard F. Ledwich   +5 more
core   +1 more source

Effect of Dispersion Slope of Highly Nonlinear Fibre on The Performance of Self Phase Modulation Based 2R-Optical Regenerator [PDF]

open access: yes, 2010
In this paper we numerically investigate the effect of dispersion slope of the highly nonlinear fibre on the performance of Self Phase Modulation based 2R-optical regenerators.
Salman Ghafoor   +3 more
core   +2 more sources

Asymmetrical Pulse-Width Modulation Strategy for Current-Fed Dual Active Bridge Bidirectional Isolated Converter Applied to Energy Storage Systems

open access: yesEnergies, 2020
This paper proposes an asymmetrical pulse-width modulation (PWM) strategy for current-fed dual-active bridge (CFDAB) converters applied to energy storage systems (ESS).
Edivan Laercio Carvalho   +5 more
doaj   +1 more source

Resonant Power Supply for Plasma Cleaning Based on Fuzzy Logic Power Tracking

open access: yesApplied Sciences, 2022
The coaxial cylindrical reactor with a rotary nozzle is proposed to be used as the plasma torch of the plasma cleaning machine. The phase-shifted full bridge series resonance circuit is used as the power circuit topology.
Xiaowei Cai   +6 more
doaj   +1 more source

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