Harmonic mitigation of PV-based resonant Cuk converter using lightning search optimization

Ulaganathan M; Muniraj R; Karuppiah N; Mounica Patil

doi:10.32397/tesea.vol7.n1.707

Authors

M. Ulaganathan Department of Electrical and Electronics Engineering, P.S.R. Engineering College, Sivakasi, India https://orcid.org/0000-0002-0224-9657
R. Muniraj Department of Electrical and Electronics Engineering, P.S.R. Engineering College, Sivakasi, India https://orcid.org/0000-0002-3158-2125
Natarajan Karuppiah Department of Electrical and Electronics Engineering, Vardhaman College of Engineering, Shamshabad, Hyderabad, India https://orcid.org/0000-0003-3325-566X
Patil Mounica Department of Electrical and Electronics Engineering, Vardhaman College of Engineering, Shamshabad, Hyderabad, India https://orcid.org/0000-0002-8146-0572

DOI:

https://doi.org/10.32397/tesea.vol7.n1.707

Keywords:

Cuk Converter, Zero current Transition, Lightning Search Optimization, Zero voltage Transition, Voltage Source Inverter

Abstract

In today’s situation, renewable power is an important one, mainly owing to the shortage of fossil fuels. One of the future’s non-conventional energy sources is solar power. But the changing weather condition introduces problems of power quality like harmonic fluctuation, voltage dip, reliability troubles and deviations in voltage waveform, which affect the stability of the entire grid. In this work, the PV (photovoltaic) panel is linked with the grid via a ZVT (Zero Voltage Transition) - ZCT (Zero Current Transition) CUK Converter and a 3-level 3ϕ Voltage Source Inverter (VSI). Here the converter’s conduction loss and switching loss were eliminated using the ZVT–ZCT principle. Here the resonant components are placed in diagonal as switches. This one to one placement will reduce the conduction loss and switching loss in the converter. Converter switching is done by using MPPT (Maximum Power Point Tracking) - based Incremental Conductance-Integral Regulator algorithm and the Inverter Switching is done by using PI tuned Optimization. This work proposes Lightning Search Optimization (LSA) with VSI (Voltage Source Inverter) to solve harmonic problems in the Renewable energy system. MATLAB / Simulink is used to simulate the proposed system. This proposed Optimization technique is employed to lessen the THD by 0.349% and increase the system efficiency to 99.35%. The Quasi Resonant Cascade converter is compared with the Resonant LUO, BOOST and SEPIC converters.

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