Search results for "B-spline function"

showing 4 items of 4 documents

Exploring parallel capabilities of an innovative numerical method for recovering image velocity vectors field

2010

In this paper an efficient method devoted to estimate the velocity vectors field is investigated. The method is based on a quasi-interpolant operator and involves a large amount of computation. The operations characterizing the computational scheme are ideal for parallel processing because they are local, regular and repetitive. Therefore, the spatial parallelism of the process is studied to rapidly proceed in the computation on distributed multiprocessor systems. The process has shown to be synchronous, with good task balancing and requiring a small amount of data transfer.

ComputationNumerical analysisProcess (computing)MultiprocessingField (computer science)Computational scienceComputer Science ApplicationsSettore MAT/08 - Analisi NumericaOperator (computer programming)Parallel processing (DSP implementation)Modeling and SimulationModelling and SimulationImage velocity vectors field Quasi-interpolant operator B-spline functions Distributed multiprocessor systemsAlgorithmMathematicsData transmissionMathematical and Computer Modelling
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Simulation of a single-phase five-level cascaded H-Bridge inverter with multicarrier SPWM B-Spline based modulation techniques

2017

Multilevel Power Inverters are now often used to convert DC to AC voltage waveform. This kind of converter allows high power quality with low output harmonics and lower commutation losses with respect to the traditional ones in order to optimize this aspect. This paper presents a novel simulation analysis of the Multicarrier Sinusoidal Pulse Width Modulation (MC SPWM) techniques B-Spline functions based to control the switches of five-level single-phase cascaded H-bridge inverter. In order to verify the performance of the converter, the harmonic content of the voltage due to modulation techniques has been taken into account. Results highlight the comparison between different B-Spline functi…

Engineering02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici01 natural sciences010309 optics0103 physical sciences0202 electrical engineering electronic engineering information engineeringElectronic engineeringMultilevel power converterWaveformCommutationElectrical and Electronic EngineeringRenewable Energy Sustainability and the Environmentbusiness.industryB-spline function020208 electrical & electronic engineeringMulticarrier modulation techniquePower (physics)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaModulationHarmonicsAutomotive EngineeringHarmonicInverterbusinessPulse-width modulation2017 Twelfth International Conference on Ecological Vehicles and Renewable Energies (EVER)
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Performances of a three-phase five-level cascaded H-bridge inverter with phase shifted B-spline based modulation techniques

2017

This paper presents a novel study of the performances of a five-level three-phase Cascaded H-Bridge Multilevel Inverter with Phase Shifted B-Spline based modulation techniques. The study has been focused on the use of B-Spline functions as carrier signals in order to evaluate the performances of the converter in terms of harmonic content on the output voltage. In the first step of this analysis the THD% has been taken into account to compare the voltage waveforms. Interesting results have been found on the fundamental amplitude of the phase and line voltage. Moreover, harmonic spectra has been compared to evaluate the different harmonic distribution in the voltage waveforms. In this work th…

PhysicsTotal harmonic distortionRenewable Energy Sustainability and the EnvironmentB-spline function020209 energy020208 electrical & electronic engineeringPhase (waves)Energy Engineering and Power Technology02 engineering and technologyMulticarrier modulation techniqueSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciTopologyThree-phaseModulation0202 electrical engineering electronic engineering information engineeringHarmonicMultilevel power converterWaveformHarmonic distributionVoltage
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A reexamination of voltage distortion for classical carrier-based vs B-Spline modulation of three-phase Voltage Sources Inverters

2015

Voltage waveform improvement has been the object of several investigations for many years and a manifold of different solutions have been proposed to reduce the harmonic content in Voltage Source Inverters (VSI) power application. In many cases this improvements have been obtained by modifying the reference voltage modulating signal. The recent introduction of cardinal B-spline functions, used as carrier signals, has given rise to a new modulation technique whose main characteristic is a lower value of the Total Harmonic Distortion (THD). After the discussion on the B-Spline modulation principle and on its computational effort, a performance comparisons is carried out by means of Total Harm…

THDvoltage waveform improvementTotal Harmonic Distortionharmonic contentroot mean squareSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricivoltage distortionHarmonic analysisControl theoryDistortionclassical carrierinvertorInverterVoltage sourceMathematicsreference voltage modulating signalTotal harmonic distortionmean square error methodRMSTHD analyzerConvolutionSpace vector pulse width modulationharmonic distortioncardinal B-spline functionSplines (mathematics)three-phase voltage sources inverterHarmonicsPulse-Width-Modulated InverterHarmonicB-spline modulationHarmonic analysiVoltage reference
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