Search results for "Z-source inverter"

showing 6 items of 6 documents

Comparative Analysis of Modified Modulation Scheme for Three-phase Voltage fed QZS Inverters

2019

Single-stage converters are one promising solution in different field of applications. In particular, quasi-Z-Source VSI topology structure playsan important role because it presents the same advantages of VSI and qZS converters. In addition, it allows increasing the inverter reliability. Moreover, modulation schemes and control strategy are still being developed. For this reason, aim of this paper is to introduce a modified modulation scheme based on the Maximum Constant Boost Control (MCBC) concept and Switching Frequency Optimal (SFO)as reference signals that represents the novelty issue of this work. The analysis has been carried out by comparing the performance of the converter in term…

Computer scienceQuasi-Z-source InverterHarmonicTopology (electrical circuits)Settore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciConvertersModulation techniqueSettore ING-IND/31 - ElettrotecnicaReliability (semiconductor)Three-phaseModulationControl theoryHarmonicsInverterVoltage stressVoltage2019 8th International Conference on Renewable Energy Research and Applications (ICRERA)
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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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Decoupled Control Scheme of Grid-Connected Split-Source Inverters

2017

During the last few years, single-stage power conversion systems has undergone a fast evolution to replace the conventional two-stage architecture, which includes a front-end dc-dc boost converter (BC) and an output voltage source inverter (VSI) [1]. This evolution has grown up to improve the overall system performance in terms of reducing its size, weight, and complexity. Most of these single-stage topologies and their different modulation schemes have been reviewed in [1]. Among these different single-stage options, the split-source inverter (SSI), shown in Figure 1, has been recently proposed in [2] as a single-stage dc-ac power converter topology to overcome some demerits in the other s…

Grid connectionSplit-source inverterRenewable energy sourceSingle-stageZ-source inverterSettore ING-INF/01 - ElettronicaVoltage source inverter
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Performance Comparison of modified modulation Techniques for Quasi-Z-Source Converters

2020

The single-stage converters represent an innovation in the field of power electronics thanks their features. Aim of this work consists in the improvement of the performances of quasi-Z-Source converters by adopting a modified modulation technique, which is based on the Maximum Constant Boost Control (MCBC) and Switching Frequency Optimal (SFO). The results in terms of voltage stress and harmonic content are compared with those obtained with conventional techniques, demonstrating the effectiveness of the proposed modulation scheme.

Quasi-Z-source Inverter modulation techniques harmonics voltage stress.Computer science020209 energy020208 electrical & electronic engineering02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciConvertersStress (mechanics)Settore ING-IND/31 - ElettrotecnicaModulationHarmonicsPower electronics0202 electrical engineering electronic engineering information engineeringHarmonicElectronic engineeringConstant (mathematics)Voltage2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)
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Experimental Validation of Maximum Constant Boost Control and Switching Frequency Optimal for three-phase Quasi-Z-Source Converters

2020

This paper presents a modified modulation scheme for quasi-Z-Source converters, based on the Maximum Constant Boost Control (MCBC) concept and Switching Frequency Optimal (SFO) as reference signal. The effectiveness of the proposed technique is validated by comparing the obtained results (in terms of AC harmonic content and voltage stress) with those carried out from traditional modulation schemes. For this reason, a test bench has been assembled and the benefits of the SFO MCBC modulation scheme have been valuated.

voltage stressTest benchQuasi-Z-source InverterSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciConvertersSignalSettore ING-IND/31 - ElettrotecnicaharmonicThree-phaseModulationControl theorymodulation techniqueHarmonicsHarmonicharmonics modulation techniques Quasi-Z-source Inverter voltage stressMathematicsVoltage2020 2nd IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)
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Decoupled control scheme of grid-connected split-source inverters

2017

Grid-connected power conversion systems for renewable energy sources must fulfill several requirements, e.g., the high efficiency, the reduced cost and complexity, and, quite often, the boost capabilities that is usually achieved using a front-end dc–dc boost converter before the inversion stage, leading to a two-stage architecture. Meanwhile, single-stage power conversion systems, which perform the boosting operation within the inversion one, offer some potential advantages, in terms of reducing the complexity and the volume of the whole system. Among several proposed options, the split-source inverter (SSI) has been recently proposed by Abdelhakim et al. as an alternative option with some…

voltage-source inverter (VSI)EngineeringDecoupled control; grid connected; impedance-based inverters; renewable energy sources (RESs); single-stage; space vector; split-source inverter (SSI); synchronous reference frame; voltage-source inverter (VSI); Z-source inverter (ZSI); Control and Systems Engineering; Electrical and Electronic Engineering020209 energyModulation index02 engineering and technologySettore ING-INF/01 - Elettronicasynchronous reference frameControl theoryspace vector0202 electrical engineering electronic engineering information engineeringElectronic engineeringElectrical and Electronic EngineeringMATLABcomputer.programming_languagesplit-source inverter (SSI)Z-source inverter Decoupled control Grid-connected Impedance-based inverters Renewable energy sources Single-stage Space vector Split-source inverter Synchronous reference frame Voltage source inverter Mathematical model Inverters Modulation Switches Voltage control Standards Topologybusiness.industry020208 electrical & electronic engineeringInversion (meteorology)Z-source inverter (ZSI)Gridsingle-stageDecoupled controlControl and Systems Engineeringimpedance-based invertersBoost converterrenewable energy sources (RESs)Invertergrid connectedReduced costbusinesscomputerReference frame
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