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Interleaved high-gain boost converter powered by solar energy using hybrid-based MPP tracking technique

Clean Energy 2022年第3期6卷 460-475页

作者： s.Nagaraja Rao suresh Kumar Anisetty B.M.Manjunatha B.M.Kiran Kumar V.Praveen Kumar s.pranupa Ms Ramaiah University of Applied sciences Department of Electrical EngineeringBangaloreIndia RGM College of Engineering and Technology(Autonomous) NandyalIndia

This paper presents a solar-powered interleaved high-gain boost converter(IHGBC)that increases voltage gain with fewer ripples in the output voltage in comparison to existing DC-DC *** goal of this research is to develop a hybrid-based maximum power point tracking(MPPT)approach with the combination of a flower pollination(FP)algorithm assisted with a perturb&observe(P&O)MPPT approach for solar photovoltaic(sPV)systems integrated with *** ensure effective usage of both FP and P&O algorithms,this study incorporates and validates the hybrid-based MPPT *** proposed solar-powered IHGBC with a hybrid-based MPPT algorithm has been computationally modelled and simulated using MATLAB®and simulink®for both uniform and non-uniform irradiation and analysed for voltage gain,ripples in the output waveforms and convergence *** proposed hybrid-based MPPT is based on a number of flowers that forecast the initial global peak,assisted by P&O in the last stage for faster convergence to attain the maximum power point(MPP).As a result,the hybrid-based MPPT approach alleviates the computational issues encountered in P&O and FP-based MPP *** proposed hybrid MPPT is compared with conventional MPPT for sPV and the results show that the solar-powered IHGBC using a hybrid-based MPPT technique has negligible oscillations of 0.14%with a high-voltage gain of 7.992 and a fast convergence rate of 0.05 seconds compared to individual P&O-based MPPT and FP-based MPPT *** simulation results of the proposed MPPT with IHGBC outperform the conventional MPPT with high-gain converters.

关键词： flower pollination interleaved high-gain boost converter maximum power point tracking technique perturb&observe solar photovoltaic

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Wind energy conversion system using perturb&observe-based maximum power point approach interfaced with T-type three-level inverter connected to grid

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Clean Energy 2022年第4期6卷 534-549页

作者： pranupa s A.T.sriram s.Nagaraja Rao M s Ramaiah University of Applied sciences BangaloreIndia

In this paper,the performance of a permanent magnet synchronous generator(PMsG)-based wind energy conversion system(WECs)supplied to an uncontrolled rectifier-fed boost converter(BC)interfaced with a three-phase T-type three-level inverter(TLI)has been *** proposed WECs involves three converters,namely an uncontrolled rectifier that is used for conversion from AC to DC;a BC supplied by a PMsG-fed rectifier used to enhance the voltage gain;and a grid-connected three-phase T-type TLI is proposed to eliminate power-quality issues with synchronization of grid voltage and *** main goal of this research is to model and control the grid-connected T-type TLI using a d-q synchronous frame for wind energy for regulating the DC-link voltage and transferring the generated wind power from the BC to the ***,the perturb&observe(P&O)-based maximum power point(MPP)approach is recommended to keep track of the MPP for a BC that is supplied from a PMsG-based WECs under constant and variable wind *** proposed PMsG-based WECs interfaced with grid-connected T-type TLI using d-q control has been computationally modelled,simulated and validated with constant and variable speeds using MATLAB®and simulink®.It is confirmed that the P&O-based MPP approach ensures maximum power for varying wind speeds,and the total harmonic distortion of the T-type TLI grid current value is 3.18%,which is within IEEE-519 ***,with grid synchronization,the power factor of the T-type TLI is maintained at unity to avoid power-quality issues.

关键词： boost converter grid synchronization perturb&observe T-type three-level inverter wind turbine

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