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This paper proposes an innovative approach to DC-AC power conversion in photovoltaic (PV) systems by integrating the boost stage and the voltage source inverter (VSI) into a single unit, referred to as the Split-Source Inverter (SSI). The SSI requires three additional diodes while maintaining the same number of active switches as a traditional VSI. The system uses eight identical states of conventional pulse width modulation (PWM) for efficient operation. An analysis of the SSI is presented, utilizing the Space SVPWM modulation system. The study considers the impact of varying temperature and irradiance on the system's performance, as well as changes in load types, such as purely resistive and RL loads. The impact of these variations on Total Harmonic Distortion (THD) is observed. Matlab simulation resultas were conducted to evaluate the system's electrical behavior, with a focus on total harmonic distortion (THD).

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Investigation and Modulation Strategies for a Three-Phase Split-Source Inverter Fed a PV System

  • 会议论文

  • 发表日期：

    2026年

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  • Hamdi Romaissa,
  • Beddiaf Yacine,
  • Sakri Djamel,
  • Ouahiba Chouhal,
  • Hassina Slimani,
  • Rafik Mahdaoui,
  • Djehfa Salim

摘要

This paper proposes an innovative approach to DC-AC power conversion in photovoltaic (PV) systems by integrating the boost stage and the voltage source inverter (VSI) into a single unit, referred to as the Split-Source Inverter (SSI). The SSI requires three additional diodes while maintaining the same number of active switches as a traditional VSI. The system uses eight identical states of conventional pulse width modulation (PWM) for efficient operation. An analysis of the SSI is presented, utilizing the Space SVPWM modulation system. The study considers the impact of varying temperature and irradiance on the system's performance, as well as changes in load types, such as purely resistive and RL loads. The impact of these variations on Total Harmonic Distortion (THD) is observed. Matlab simulation resultas were conducted to evaluate the system's electrical behavior, with a focus on total harmonic distortion (THD).