Search results for "Electrical & Electronic"

showing 10 items of 489 documents

A simplified approach for load flow analysis in MV smart grids based on LV power measurements

2017

This paper presents a simplified approach for load flow analysis in medium voltage (MV) distribution networks. It is a power summation Backward/Forward (B/F) algorithm, based on measurements of active and reactive powers at low voltage (LV) side of MV/LV distribution substations. The proposed solution allows achieving good accuracy, computational efficiency and fast convergence. In order to verify the algorithm performances, simulation studies are carried out in the case of a real test system, i.e. the distribution grid of Favignana Island (Mediterranean Sea, Italy). The compatibility between simulations results and power measurements at the MV bus bars of the generating substation shows th…

EngineeringBusbar020209 energyBiomedical EngineeringAdvanced metering infrastructure (AMI)Smart grid02 engineering and technologyload flow analysisControl theory0202 electrical engineering electronic engineering information engineeringElectronic engineeringPower-flow studyInstrumentationPower system monitoringbusiness.industry020208 electrical & electronic engineeringAC powerSmart gridPower system measurementSignal ProcessingLoad flow analysiAlgorithm designPower system measurementsDistribution gridPower quality analyzers (PQA)businessSettore ING-INF/07 - Misure Elettriche E ElettronicheLow voltageVoltage2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)
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Overcoming synchronization issues in wireless technology Partial Discharge measurement

2016

In this paper, several aspects of the fundamentals of wireless Partial Discharge (PD) measurements are first discussed. Then, the relevance of the problem of voltage synchronization in PD wireless diagnosis is outlined. When portable instruments are used for PD detection, the main issue is the voltage measurement at the site where the PD detection is carried out. When such analysis is carried out over shielded cables, the AC (50/60 Hz) voltage reference signal is not easily detectable, while one of the basic parameters for PD diagnosis, the displacement of the inception voltage of the PD as compared to the reference voltage, is not available. Even if highperformance sensors are readily avai…

EngineeringEnergy Engineering and Power Technology02 engineering and technology01 natural sciencesSignallaw.inventionSynchronization (alternating current)law0103 physical sciencesShielded cable0202 electrical engineering electronic engineering information engineeringElectronic engineeringWirelessElectrical and Electronic Engineering010302 applied physicsbusiness.industryRenewable Energy Sustainability and the Environment020208 electrical & electronic engineeringElectrical engineeringSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaPartial dischargePD patternPartial DischargebusinesssynchronizationVoltage referenceVoltage
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An Innovative Measurement Approach for Load Flow Analysis in MV Smart Grids

2016

This paper proposes a novel measurement procedure for load flow analysis in medium voltage (MV) smart grids. The new approach is based on power measurements at low voltage (LV) side of MV/LV distribution substations. Such measurements are carried out by means of power quality analyzers. If compared with the load flow methods based on measurements at the MV side, the proposed approach has a lower cost and it offers an equally reliable measurement system. The proposed algorithm takes the basic concept of the current summation backward/forward method; some modifications are introduced to use LV load powers measurements. To this aim, the MV/LV power transformer is properly modeled and taken int…

EngineeringGeneral Computer Science020209 energy02 engineering and technologyload flow analysispower system monitoring0202 electrical engineering electronic engineering information engineeringElectronic engineeringPower-flow studyMATLABSimulationcomputer.programming_languagebusiness.industrySystem of measurement020208 electrical & electronic engineeringAdvanced metering infrastructure load flow analysis power quality analyzer (PQA) power system measurements power system monitoring smart grid (SG).AC powerpower quality analyzer (PQA)power system measurementsPower (physics)smart grid (SG)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSmart gridAdvanced metering infrastructurebusinesscomputerLow voltageSettore ING-INF/07 - Misure Elettriche E ElettronicheVoltage
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A New Low Cost Coupling System for Power Line Communication on Medium Voltage Smart Grids

2018

This paper proposes and verifies the performance of an innovative and low cost coupling system for power line communication (PLC) on medium voltage (MV) smart grids. The coupling system makes use of the capacitive divider of the voltage detecting systems (VDSs) to inject and receive the PLC signal. VDS are usually already installed in the MV switchboards of the major electrical manufacturer all over the world according to IEC 61243-5. VDS are used to detect the presence of the mains voltage to guarantee personnel safety. An interface circuit has been developed to be connected between the PLC transceiver and the VDS socket. In this way, the PLC signal can be coupled to the MV network without…

EngineeringGeneral Computer Sciencebusiness.industry020209 energycommunication systems; couplers; narrow band power line communication; Power system communication; power system communication; power system measurements; smart grids020208 electrical & electronic engineeringElectrical engineering02 engineering and technologyCapacitanceSignalPower-line communicationSmart gridModulationPower system communication communication systems couplers narrow band power line communication communication signal couplers power system communication power system measurements smart grids.0202 electrical engineering electronic engineering information engineeringElectronic engineeringcommunication signal couplersTransceiverbusinessElectrical impedanceSettore ING-INF/07 - Misure Elettriche E ElettronicheVoltage
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Decoupled control scheme of the grid-connected split-source inverter for renewable energy sources

2016

Grid-connected power conversion systems for renewable energy sources must fulfill several requirements, including high efficiency, reduced cost and complexity, and, quite often, also boost capabilities from the dc sources to the ac power grid. For such applications, single-stage power converters with boost capabilities offer some potential advantages. Among several proposed options, split-source inverter (SSI) has been recently investigated. This paper proposes a decoupled control scheme for the SSIs, where the common mode term of the ac modulation signals is used to control the dc input current. Thus, the dc input current and ac output current can be controlled independently. The proposed …

EngineeringGrid connection; Renewable energy sources; Single-stage; Split-source inverter; Voltage source inverter; Z-source inverter; Control and Systems Engineering; Electrical and Electronic EngineeringRenewable energy source02 engineering and technologySettore ING-INF/01 - ElettronicaRenewable energy sourcesSplit-source inverter0202 electrical engineering electronic engineering information engineeringGrid connectionSingle-stageElectrical and Electronic EngineeringVoltage source inverterbusiness.industryGrid connection020208 electrical & electronic engineeringElectrical engineering020206 networking & telecommunicationsZ-source inverterAC powerConvertersGridRenewable energyPower (physics)Control and Systems EngineeringInverterbusinessZ-source inverter
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Introduction to the Special Section on Induction Heating Systems

2014

International audience; This special section aims at bringing some of the most recent and interesting ideas in this area by the worldwide research community and at presenting some of the latest advancements and developments in the field of induction heating technology.

EngineeringInduction heatingInduction heatingField (physics)business.industry020208 electrical & electronic engineering0206 medical engineeringMechanical engineering02 engineering and technologyElectromagnetic heating020601 biomedical engineering[SPI.TRON]Engineering Sciences [physics]/ElectronicsControl and Systems EngineeringResearch community0202 electrical engineering electronic engineering information engineeringSpecial sectionElectrical and Electronic Engineeringbusiness
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Grid integration of PEM fuel cell with multiphase switching for maximum power operation

2016

Energy storage in the form of electrolytic Hydrogen can play an important role for integration of intermittent renewable energy sources in the smart grid environment. Electrolytic Hydrogen can be used as a fuel in proton exchange membrane (PEM) fuel cell. In this work, a technique for multiphase switching of a DC-DC converter associated with grid integration of a PEM fuel cell stack for maximum power operation in non-dispatchable mode is proposed. The presented system consists of a PEM fuel cell stack which is operating in non-dispatchable mode of operation, DC-DC multiphase switching boost converter for maximum power operation and a grid tied three phase voltage source inverter (VSI). VSI …

EngineeringMaximum power principlebusiness.industry020209 energy020208 electrical & electronic engineeringElectrical engineeringProton exchange membrane fuel cell02 engineering and technologyEnergy storagePower (physics)Renewable energySmart gridStack (abstract data type)Boost converter0202 electrical engineering electronic engineering information engineeringbusiness2016 IEEE International Conference on Power System Technology (POWERCON)
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Nonlinear droop control for minimum power losses operation in islanded microgrids

2017

In this work, a modified primary regulation technique is proposed to control one of the inverter interfaced units feeding an islanded microgrid. The proposed approach employs an off-line minimum losses Optimal Power Flow, OPF, to extract a lookup table for the composition of the droop curve. Simulations prove that generators reach an operating point that corresponds to a minimum loss operation for the relevant power flow distribution. Since OPF has been implemented with frequency and voltage dependent models, the results of the modified droop are stable and also energy efficient. Further studies will address further analysis on systems showing different R/X ratio and modeling of more genera…

EngineeringOperating pointEnvironmental EngineeringDynamic droop controlbusiness.industry020209 energyIslanded microgrid020208 electrical & electronic engineeringEnergy Engineering and Power Technology02 engineering and technologyIndustrial and Manufacturing EngineeringPower (physics)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaControl theoryLookup table0202 electrical engineering electronic engineering information engineeringInverterVoltage droopMicrogridElectrical and Electronic EngineeringbusinessEfficient energy useVoltageMinimum losses operation
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ODEF: An interactive tool for optimized design of EMI filters

2016

The impact of EMI filters on volume and weight of power converters is significant. For this reason, filter's size optimization is a strategic step towards the improvement of the power converter's power density. An EMI filter design that follows a conventional procedure does not guarantee the selection of components/configuration leading to the best power density. Therefore, in order to help EMI engineers and scientists in pursuing a fast and effective choice of optimal discrete EMI filter components and configuration, a novel tool is proposed in this paper, namely ODEF (Optimized Design of EMI Filters). ODEF is an interactive software application running in Matlab® environment. It suitably …

EngineeringPower convertersbusiness.industryElectrical Drives020208 electrical & electronic engineeringVolume (computing)Control engineeringElectrical Drive02 engineering and technologyConvertersPower converterPower (physics)Power densityFilter designSettore ING-IND/31 - ElettrotecnicaEMI filter designEMIFilter (video)Control and Systems Engineering0202 electrical engineering electronic engineering information engineeringElectronic engineeringElectrical and Electronic EngineeringbusinessInduction motorPower density
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Self training and meta-cognition goals. New approaches, trends and tools in modern teaching of power electronics

2016

Teaching a complex discipline like power electronics is an open question and the best educational approach or the objectives to be achieved at the end of a power electronic course are still in debate. This paper presents a visual didactic approach chosen by the Authors in the last years in their respective courses in power electronics. It also discuss the objectives and the skills required to the students at the end of the course: in particular, some meta-cognition objectives recently fully entered into the education world in general. Such meta-cognition goals are now discussed for the particular case of power electronics courses. The Switching Functions (SFs) generalized approach is then d…

EngineeringRenewable Energy Sustainability and the Environmentbusiness.industry020208 electrical & electronic engineering05 social sciencesControl (management)050301 educationMetacognition02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciPower (social and political)Electric power systemEducational approachEngineering managementPower electronicsAutomotive EngineeringComputingMilieux_COMPUTERSANDEDUCATION0202 electrical engineering electronic engineering information engineeringElectronic engineeringbusiness0503 educationSelf training2016 Eleventh International Conference on Ecological Vehicles and Renewable Energies (EVER)
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