Results 11 to 20 of about 41,385 (266)

Efficient n-M-PAWM hybrid modulation scheme for high data transmission in visible light communication system

open access: yese-Prime: Advances in Electrical Engineering, Electronics and Energy, 2022
Visible-Light Communications (VLC) is a new wireless communication technology, which has attracted particular attention as a promising solution for very high speed 5G, and 6G wireless networks in indoor environments.
Mohamed El Jbari, Mohamed Moussaoui
doaj   +1 more source

A Bandwidth Efficient Hybrid Multilevel Pulse Width Modulation for Visible Light Communication System: Experimental and Theoretical Evaluation

open access: yesIEEE Open Journal of the Communications Society, 2022
Visible light communication (VLC) is considered a new technology for interconnecting devices in 5G and beyond. VLC can provide additional bandwidth for communicating devices which can help to reduce the radio frequency bandwidth congestion. In this work,
Mohammad Abrar Shakil Sejan   +3 more
doaj   +1 more source

A General Pulse Width Modulation Method for Zero-Voltage-Switching Active-clamping Three-phase Power Converters: Edge Aligned Pulse Width Modulation (EA-PWM)

open access: yesIEEE Open Journal of Power Electronics, 2020
A general PWM method for soft-switching three-phase power converters-Edge Aligned PWM (EA-PWM) is proposed. It aligns all the high loss commutation instants of the converter bridges in a switching cycle at the same instant so that all the switches of the
Keyan Shi, Jinyi Deng, Dehong Xu
doaj   +1 more source

Modified Discontinuous Pulsewidth Modulation Approach With Independent Phase Loss Adjustment for Voltage Source Converters

open access: yesIEEE Access, 2023
This paper presents an efficient independent phase switching loss reduction technique for 2-level 3-phase voltage source inverters. A modified carrier-based pulse-width modulation algorithm, named per-phase discontinuous pulse-width modulation, is used ...
Minh-Hoang Nguyen   +2 more
doaj   +1 more source

Novel Asymmetrical Pulse Width Modulation Method

open access: yesMATEC Web of Conferences, 2017
The paper proposes new asymmetrical PWM that can be used for operation of multilevel inverters. The working and construction principle of this PWM is demonstrated on 13-level PWM signal that is applied to nine-level inverter and operates it as 13-level ...
Baimel Dmitry, Tapuchi Saad, Baimel Nina
doaj   +1 more source

Coordinate strategy of dual-pulse-width-modulation converter based on direct power control with load power feed-forward

open access: yesMeasurement + Control, 2020
The common dual-pulse-width-modulation converter adopts the independent method to control the rectifier and inverter, which has the defects including direct current voltage fluctuation, slow system response and so on.
Bo Fan   +3 more
doaj   +1 more source

Control and Stabilization of Centimeter Scale Glow Discharge in Ambient Air Using Pulse-Width Modulation

open access: yesIEEE Access, 2020
Re-pulsing glow discharges in atmospheric-pressure air were experimentally investigated using a push-pull generator with pulse-width modulation. Discharges were ignited as a spark-glow discharge sequence and sustained in a glow regime after ignition in a
Vladislav Gamaleev   +2 more
doaj   +1 more source

Intensity Distribution of the Shaped Femtosecond Laser Pulse by Step Phase Modulation

open access: yesNantong Daxue xuebao. Ziran kexue ban, 2020
The intensity distribution of the step phase shaped femtosecond laser pulse by ultra-fast pulse shaping technique is studied. The results show that two sub-pulses with variable intensity can be developed from a Gaussian laser pulse by adjusting the step ...
HUANG Yunxia;JI Xianming;XU Shuwu
doaj   +1 more source

Hybrid Space Vector PWM Strategy for Three-Phase VIENNA Rectifiers

open access: yesSensors, 2022
Vienna rectifiers are widely used, but they have problems of zero-crossing current distortion and midpoint potential imbalance. In this paper, an improved hybrid modulation strategy is proposed.
Yaodong Wang   +3 more
doaj   +1 more source

Shaft Voltage Reduction Method Using Carrier Wave Phase Shift in IPMSM

open access: yesEnergies, 2021
Common-Mode Voltage (CMV) induces shaft voltage and bearing current due to the electrical interaction with the parasitic capacitance of the motor. CMV, shaft voltage, and bearing current are considered the major causes of bearing fault.
Jun-Hyuk Im   +3 more
doaj   +1 more source

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