0000000001205129

AUTHOR

M Porretto

showing 4 related works from this author

A sizing approach for stand-alone hybrid photovoltaic-wind-battery systems: A Sicilian case study

2018

Abstract Solar and wind energy are the two most available renewable energy resources in the world. In this paper, a high-resolution analysis that allows sizing a hybrid photovoltaic-wind turbine-battery banks has been carried out. The analysis aims to minimize the annualized cost of the systems satisfying two reliability constraints. The solution has been obtained numerically by means of an iterative technique. The decision variables are the photovoltaic area, wind turbine radius, and battery capacity. A high-resolution model, based on fuzzy logic inference system, has been developed to evaluate the number of active occupants and the domestic electricity consumption. In order to allow a mor…

LLPComputer science020209 energyStrategy and ManagementFuzzy inference systemEconomic optimization02 engineering and technology010501 environmental sciences01 natural sciencesTurbineIndustrial and Manufacturing EngineeringSettore ING-IND/17 - Impianti Industriali Meccanici0202 electrical engineering electronic engineering information engineeringSettore ING-IND/15 - Disegno E Metodi Dell'Ingegneria IndustrialeReliability (statistics)Matlab0105 earth and related environmental sciencesGeneral Environmental ScienceIterative and incremental developmentWind powerRenewable Energy Sustainability and the Environmentbusiness.industryPhotovoltaic systemSizingRenewable energyReliability engineeringHybrid PV-Wind energy systemElectricitybusinessJournal of Cleaner Production
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Analysis of the maximization of wind turbine energy yield using a continuously variable transmission system

2017

Abstract In this paper, an analytic study of the subject of mechanical power transmission in HAWT wind turbine has been carried out. For the most part, the study analyzes the use of continuously variable transmission (CVT) in order to allow the turbine and the electric generator to couple, allowing in turn, an unremitting transmission ratio adjustment. In low-wind sites, the design criteria suggest an oversizing of the wind turbine in order to generate adequate electrical power even at low wind speed. The proposed solution enhances the space of operating points since it allows the electric generator to release the rotational speed from the turbine one (limited due to structural integrity). …

EngineeringRenewable energyWind powerRenewable Energy Sustainability and the Environmentbusiness.industry020209 energyElectric generator02 engineering and technologyTurbineWind speedAutomotive engineeringlaw.inventionRenewable energyPower optimizerDirect-drive turbinelawSettore ING-IND/17 - Impianti Industriali Meccanici0202 electrical engineering electronic engineering information engineeringElectric powerbusinessCVTSettore ING-IND/15 - Disegno E Metodi Dell'Ingegneria IndustrialeWind turbineContinuously variable transmission
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Design of the stabilization control system of a high-speed craft

2016

In this paper, the main causes of technical malfunction of a hydrofoil was analyzed. In particular, a preliminary analysis evaluates the economic impact for the navigation company of the periodical maintenance related to the keeping of the vessel in dry dock. The study demonstrated that the main critical points are focused on the fragility of the stabilization control system. The increasing of operating costs has motivated the realization of a study aimed at redesigning the stabilization system. The continuing failure of the stabilization system (usually in water-immersed) severely limits the use of the high-speed craft. The proposed design solution considers the positioning of the control …

Universal joint0209 industrial biotechnologyComputer science020208 electrical & electronic engineeringFE analysis fatigue tests.02 engineering and technologyKinematicslaw.inventionMechanical systemMechanism (engineering)Hydraulic cylinder020901 industrial engineering & automationlawControl theoryHullDry dockSettore ING-IND/17 - Impianti Industriali Meccanici0202 electrical engineering electronic engineering information engineeringHigh-speed craftActuatorSettore ING-IND/15 - Disegno E Metodi Dell'Ingegneria Industrialehydrofoil stabilization control system
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Design of an Electromagnetic Regenerative Damper and Energy Harvesting Assessment

2016

Design of an electromagnetic regenerative shock absorber is proposed in this paper. In order to increase the efficiency of land vehicles the sources of energy losses have to be eliminated, or reduced. For this reason, several systems, recovering kinetic energy and converting it into electrical power, were studied and designed in the last years. This energy, converted into heat in traditional systems, is recovered to increase the autonomy of the vehicle. The proposed device is constituted by a stator part which coils are placed in an innovative disposition. The moving part is constituted by a rod made in stainless steel with alternated permanent magnets and spacers, so that the relative moti…

Settore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineEnergy harvestingSuspensionRegenerative damperElectromagnetic shock absorberFE magnetostatic analysisSettore ING-IND/16 - Tecnologie E Sistemi Di Lavorazione
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