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<p>This paper deals with a grid-connected solar photovoltaic (PV) plant using 18-pulse voltage source converters (VSCs) with selective harmonic elimination pulse width modulation (SHE-PWM). A battery energy storage (BES) is integrated with solar PV plant to store excess solar energy during day and supplies it to grid during nighttime hours. Additionally, BES enables PV plant in primary frequency control of grid. To achieve an 18-pulse voltage waveform, 18-pulse VSC is designed using three distinct phase-shifted transformers. This configuration effectively eliminates lower-order voltage harmonics from VSC output. Additionally, VSC employs a selective harmonic elimination technique to achieve soft-switching and mitigate higher-order harmonics present in VSC output voltage. MATLAB simulation and real-time OPAL-RT hardware validation of dynamic and steady-state performances are carried out of a 150MWp PV plant with 300MWh battery storage.</p>

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Selective Harmonic Elimination Modulated Multipulse Voltage Source Converter for Grid Tied Solar Photovoltaic with Battery Energy Storage

  • 期刊论文

  • 发表日期：

    2025年8月8日

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  • Subir Karmakar,
  • Bhim Singh

摘要

This paper deals with a grid-connected solar photovoltaic (PV) plant using 18-pulse voltage source converters (VSCs) with selective harmonic elimination pulse width modulation (SHE-PWM). A battery energy storage (BES) is integrated with solar PV plant to store excess solar energy during day and supplies it to grid during nighttime hours. Additionally, BES enables PV plant in primary frequency control of grid. To achieve an 18-pulse voltage waveform, 18-pulse VSC is designed using three distinct phase-shifted transformers. This configuration effectively eliminates lower-order voltage harmonics from VSC output. Additionally, VSC employs a selective harmonic elimination technique to achieve soft-switching and mitigate higher-order harmonics present in VSC output voltage. MATLAB simulation and real-time OPAL-RT hardware validation of dynamic and steady-state performances are carried out of a 150MWp PV plant with 300MWh battery storage.