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A hybrid technique for optimal power quality enhancement in grid-connected photovoltaic interleaved inverter

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  • K Vidhya
  • K Krishnamoorthi

Abstract

A grid-connected photovoltaic (PV) system with interleaved inverter using a hybrid approach is presented in the paper. Generally, high deviation of DC voltage causes severe damage to the grid-linked system generate power quality issues. Therefore, a hybrid technique called LA-HBO, which is a combination of Lichtenberg optimization algorithm (LA) and heap-based optimizer, is proposed. The proposed method works with the interleaved inverter to realize a multifunctional operation and improve the power quality efficiency of the system. Here, LA techniques improve the power generated from PV and self-charging of the DC-link voltage control loop. The reference current signal is generated through the self-charging DC-link voltage control loop to eliminate the power quality issues. The double band hysteresis current controller generated a minimum switching frequency to provide low switching losses. A MATLAB platform is utilized to implement the proposed system, and the performance of the system is compared with other existing techniques. The test result validated that the proposed system can able to perform multilevel functions and produce power with high quality compared to other techniques. The value for the THD that achieves the proposed hybrid technique is 21.22%. The elapsed time of the proposed hybrid technique is 2.09 seconds.

Suggested Citation

  • K Vidhya & K Krishnamoorthi, 2024. "A hybrid technique for optimal power quality enhancement in grid-connected photovoltaic interleaved inverter," Energy & Environment, , vol. 35(1), pages 244-274, February.
    • Handle: RePEc:sae:engenv:v:35:y:2024:i:1:p:244-274
    DOI: 10.1177/0958305X221140574
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