Scholarlink

<p>The escalating global energy demand is spurring a transition towards renewable energy sources (RES), with distributed generation (DG) units such as photovoltaic (PV) and wind energy conversion systems (WECS) playing pivotal roles in microgrid technology. This study proposes an innovative approach integrating an Improved Z Source Converter with a Bird Swarm-Optimized Proportional Integral (PI) controller to enhance voltage output in PV systems, while employing a Doubly Fed Induction Generator (DFIG) with a Pulse Width Modulation (PWM) rectifier under PI control for WECS. Energy storage, managed by a bidirectional battery converter, stores excess energy from the Hybrid Renewable Energy System (HRES) for use during low generation periods. Converting DC link voltage to AC voltage via a three-phase Voltage Source Inverter (3ϕVSI) with an LC filter ensures power quality, with a PI controller aiding grid synchronization. This integrated system optimizes harmonics, achieving a low grid current total harmonic distortion (THD) waveform of 2.34%, as demonstrated in MATLAB/Simulink simulations. The strategy not only enhances electricity output but also fosters grid stability and promotes sustainable energy utilization with minimal inductance requirements throughout the duty cycle.</p>

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Advanced Energy Management System: Z Source Converter Integration and Swarm-Optimized Control for Enhanced Performance in Hybrid Renewable Energy Systems

  • 期刊论文

  • 发表日期：

    2025年1月23日

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  • Venkatesh Chiluka,
  • G. G. Raja Sekhar

摘要

The escalating global energy demand is spurring a transition towards renewable energy sources (RES), with distributed generation (DG) units such as photovoltaic (PV) and wind energy conversion systems (WECS) playing pivotal roles in microgrid technology. This study proposes an innovative approach integrating an Improved Z Source Converter with a Bird Swarm-Optimized Proportional Integral (PI) controller to enhance voltage output in PV systems, while employing a Doubly Fed Induction Generator (DFIG) with a Pulse Width Modulation (PWM) rectifier under PI control for WECS. Energy storage, managed by a bidirectional battery converter, stores excess energy from the Hybrid Renewable Energy System (HRES) for use during low generation periods. Converting DC link voltage to AC voltage via a three-phase Voltage Source Inverter (3ϕVSI) with an LC filter ensures power quality, with a PI controller aiding grid synchronization. This integrated system optimizes harmonics, achieving a low grid current total harmonic distortion (THD) waveform of 2.34%, as demonstrated in MATLAB/Simulink simulations. The strategy not only enhances electricity output but also fosters grid stability and promotes sustainable energy utilization with minimal inductance requirements throughout the duty cycle.