10.1007/s40095-022-00479-4

Analysis of grid-connected reduced switch MLI with high-gain interleaved boost converter and hybrid MPPT for solar PV

  • B. M. Kiran Kumar*1,
  • S. Nagaraja Rao1,
  • M. S. Indira1,
  1. Department of Electrical Engineering, M S Ramaiah University of Applied Sciences, Bangalore, 560058, IN

Published in Issue 2022-02-14

How to Cite

Kumar, B. M. K., Rao, S. N., & Indira, M. S. (2022). Analysis of grid-connected reduced switch MLI with high-gain interleaved boost converter and hybrid MPPT for solar PV. International Journal of Energy and Environmental Engineering, 13(4 (December 2022). https://doi.org/10.1007/s40095-022-00479-4
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Abstract

Abstract The performance analysis of a grid-connected reduced switch multilevel inverter (MLI) with an auxiliary diode bridge for solar photovoltaic (SPV) systems is presented in this paper. A high-gain interleaved boost converter (HG-IBC) is introduced to boost the output of SPV to the necessary level. Due to the intermittent nature of the SPV's output, a hybrid fuzzy logic perturb and observe-based maximum power point tracking is incorporated to excerpt the maximum possible power from the SPV. A detailed comparative analysis of various existing boost converters with the proposed HG-IBC is provided, with particular emphasis on the number of components and boost factor. The suggested MPPT is also compared with the conventional MPPT methods, and the results are analysed in terms of rise time and percentage oscillations. A sine PWM with a dual reference modulation scheme is used to control the switches of MLI. A phase-locked loop technology is used to ensure that the inverter's output current is in sync with the voltage of the grid. The Simulink platform is used to simulate the complete model. The simulation of SPV with HG-IBC and HFL-PO MPPT shows superior performance with respect to rise time and percentage oscillations at the output with a voltage gain of five. The suggested MLI requires a minimal number of switches, and hence the overall losses are minimized. The THD of MLI is 3.08%, which is within the limits of IEEE regulations. Overall, the simulation results indicate that the model performs better and is more efficient.

Keywords

  • Boost factor,
  • Grid,
  • HG-IBC,
  • HFL-PO MPPT,
  • MLI and SPV

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