Search results for "Capacitor"

showing 4 items of 164 documents

IEEE Std. 1459 power quantities ratio approaches for simplified harmonic emissions assessment

2018

The paper investigates the suitability of using power ratio parameters for harmonic emissions assessment at the point of common coupling (PCC). The study is carried out starting from the IEEE Std. 1459-2010 apparent power decomposition, where power factors are defined for evaluating line utilization and harmonic pollution levels. In addition, the study investigates the behavior of new parameters, which are expressed in terms of ratio between IEEE Std. 1459-2010 power quantities. The study is carried out for both single-phase and three-phase case, also considering the presence of capacitors. ? 2018 IEEE.

harmonic sources; IEEE Std. 1459-2010; power definitions; power measurement; power quality020209 energy02 engineering and technologyAC powerAutomotive engineeringlaw.inventionPower (physics)harmonic distortionHarmonic analysisCapacitorHarmonic pollutionlawPower ratio0202 electrical engineering electronic engineering information engineeringHarmonicPoint of common couplingPower measurement harmonic distortion power definitions power quality IEEE Std. 1459-2010 harmonic sourcesSettore ING-INF/07 - Misure Elettriche E ElettronicheMathematics2018 18th International Conference on Harmonics and Quality of Power (ICHQP)
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Design and Realization of a Bidirectional Full Bridge Converter with Improved Modulation Strategies

2020

In this paper a Full-Bridge Converter (FBC) for bidirectional power transfer is presented. The proposed FBC is an isolated DC-DC bidirectional converter, connected to a double voltage source&mdash

isolated DC-DC bidirectional converterComputer Networks and CommunicationsComputer science020209 energylcsh:TK7800-836002 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici7. Clean energySettore ING-INF/01 - Elettronicafull-bridge converterlaw.inventionFull bridge converterlaw0202 electrical engineering electronic engineering information engineeringElectronic engineeringMaximum power transfer theoremElectrical and Electronic EngineeringTransformerfull-bridge converter; isolated DC-DC bidirectional converter; phase shift modulation; supercapacitorssupercapacitors020208 electrical & electronic engineeringlcsh:Electronicsphase shift modulationHardware and ArchitectureControl and Systems EngineeringSignal ProcessingVoltageElectronics
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Min-Type Control Strategy of a DC-DC Synchronous Boost Converter

2019

International audience; This paper presents the analysis and design of a min-type strategy to control a synchronous boost converter in continuous conduction mode. The strategy uses a nonlinear switching surface to establish the change of topology in the converter and is analyzed by means of a sliding-mode control approach. Subsequently, the min-type strategy is modified by a hybrid control formulation, which introduces a hysteresis width and a dwell-time to obtain a finite switching frequency in the start-up and steady-state respectively. The hybrid control formulation is implemented digitally by means of a microprocessor which processes the samples of inductor current and capacitor voltage…

min-type controlstart-upComputer scienceTopology (electrical circuits)02 engineering and technologyInductorSliding mode controllaw.inventionSettore ING-INF/04 - AutomaticaControl theorylaw[INFO.INFO-AU]Computer Science [cs]/Automatic Control Engineering0202 electrical engineering electronic engineering information engineeringElectrical and Electronic EngineeringIndex Terms-Synchronous boost converterSynchronous boost converter020208 electrical & electronic engineeringhybrid controlPower (physics)HysteresisMicroprocessorNonlinear systemsliding-mode controlControl and Systems EngineeringCapacitor voltagesliding-mode control (SMC)Boost converterTransient (oscillation)
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Sustainable Supercapacitors Based on Polypyrrole-Doped Activated Biochar from Wood Waste Electrodes

2023

The synthesis of high-performance carbon-based materials from biomass residues for electrodes has been considered a challenge to achieve in supercapacitor-based production. In this work, activated biochar has been prepared as the active electrode material for supercapacitors (SCs), and an effective method has been explored to boost its capacitive performance by employing polypyrrole (PPy) as a biochar dopant. The results for physicochemical characterization data have demonstrated that PPy doping affects the biochar morphology, specific surface area, pore structure, and incorporation of surface functionalities on modified biochar. Biochar-PPy exhibited a surface area of 87 m2 g−1, while pris…

wood-based supercapacitorsbiohiilipuuhiilijätteetwood wastepolypyrrolesuperkondensaattoritelektroditMaterials Chemistrywood electrodespseudocapacitancepuu (luonnonmateriaalit)
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