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<p>This study presents an enhanced performance strategy for a Hybrid Renewable Energy System (HRES) connected to grid by using a Triple-Stage Interleaved Boost-SEPIC-Luo (TSIBSL) converter controlled by a Puffer Fish Optimized Proportional Integral (PFO-PI) controller. The system combines wind energy sources based on Photovoltaic (PV) and Doubly Fed Induction Generators (DFIG), stabilized by an advanced control mechanism to provide ideal voltage regulation. The proposed converter architecture provides high voltage gain, increased efficiency, and minimized ripple, rendering it appropriate for varying renewable energy outputs. The Puffer Fish Optimization (PFO) algorithm is employed to fine-tune the Proportional-Integral (PI) controller parameters, resulting in superior dynamic response and minimized steady-state error. A bidirectional converter is incorporated to manage battery energy storage, enabling efficient charging and discharging based on system demands. Grid integration is achieved through a three phase Voltage Source Inverter (VSI) to ensure power quality compliance. The MATLAB simulation platform and hardware prototype are utilized for confirming the efficacy of entire developed system. The attained results validate that the proposed approach significantly enhances system stability, maintains voltage regulation and ensures efficient energy transfer under changing load and ecological circumstances. The proposed converter efficiency is attained as 98.4% whereas the controller exhibits a settling time of 0.2s and computational time of 1.42s.</p>

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Enhanced Performance of Triple-Stage Interleaved Converter in HRES Grid System Using Puffer Fish Optimized PI Controller

  • 期刊论文

  • 发表日期：

    2026年2月23日

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  • C. Gnana Thilaka,
  • N. Sridhar,
  • Bapayya Naidu Kommula,
  • N. P. Gopinath

摘要

This study presents an enhanced performance strategy for a Hybrid Renewable Energy System (HRES) connected to grid by using a Triple-Stage Interleaved Boost-SEPIC-Luo (TSIBSL) converter controlled by a Puffer Fish Optimized Proportional Integral (PFO-PI) controller. The system combines wind energy sources based on Photovoltaic (PV) and Doubly Fed Induction Generators (DFIG), stabilized by an advanced control mechanism to provide ideal voltage regulation. The proposed converter architecture provides high voltage gain, increased efficiency, and minimized ripple, rendering it appropriate for varying renewable energy outputs. The Puffer Fish Optimization (PFO) algorithm is employed to fine-tune the Proportional-Integral (PI) controller parameters, resulting in superior dynamic response and minimized steady-state error. A bidirectional converter is incorporated to manage battery energy storage, enabling efficient charging and discharging based on system demands. Grid integration is achieved through a three phase Voltage Source Inverter (VSI) to ensure power quality compliance. The MATLAB simulation platform and hardware prototype are utilized for confirming the efficacy of entire developed system. The attained results validate that the proposed approach significantly enhances system stability, maintains voltage regulation and ensures efficient energy transfer under changing load and ecological circumstances. The proposed converter efficiency is attained as 98.4% whereas the controller exhibits a settling time of 0.2s and computational time of 1.42s.