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This chapter discusses hybrid energy sources with a PEM fuel cell and photovoltaic-fed grid-connected system with an NPC inverter interface to enhance consistency and efficiency in renewable energy generation. The proposed hybrid energy source, PEMFC—PV system, ensures a continuous power supply while optimizing energy utilization. The maximum power is extracted from the PV system during daytime with the help MPPT method, whereas the PEMFC provides a continuous DC power supply, which compensates for power deficits from the PV system, thereby improving system reliability and reducing dependency on a conventional grid system. The 3-phase NPC inverter system is added to produce nearly sinusoidal output voltage, and generates reduced total harmonic distortion, minimized losses, fewer EMI issues, and provides proper synchronization with grid-connected system. The switching pulses for the NPC inverter are generated using space vector pulse width modulation with reduced computational time. The proposed system performance is verified through the simulation and experimental results with various parameters like power quality, reduced THD, improved synchronization between the hybrid source and grid system, better output voltage, and good dynamic performance. The result of this chapter shows that the hybrid energy system provides excellent performance with grid-connected system through an advanced space vector PWM scheme.

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Grid-Connected Hybrid Energy System with Fuel Cell-PV Integration and NPC Inverter Interface

  • 章节

  • 发表日期：

    2025年

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  • R. Palanisamy,
  • S. Usha,
  • T. M. Thamizh Thentral,
  • Surender Reddy Salkuti

摘要

This chapter discusses hybrid energy sources with a PEM fuel cell and photovoltaic-fed grid-connected system with an NPC inverter interface to enhance consistency and efficiency in renewable energy generation. The proposed hybrid energy source, PEMFC—PV system, ensures a continuous power supply while optimizing energy utilization. The maximum power is extracted from the PV system during daytime with the help MPPT method, whereas the PEMFC provides a continuous DC power supply, which compensates for power deficits from the PV system, thereby improving system reliability and reducing dependency on a conventional grid system. The 3-phase NPC inverter system is added to produce nearly sinusoidal output voltage, and generates reduced total harmonic distortion, minimized losses, fewer EMI issues, and provides proper synchronization with grid-connected system. The switching pulses for the NPC inverter are generated using space vector pulse width modulation with reduced computational time. The proposed system performance is verified through the simulation and experimental results with various parameters like power quality, reduced THD, improved synchronization between the hybrid source and grid system, better output voltage, and good dynamic performance. The result of this chapter shows that the hybrid energy system provides excellent performance with grid-connected system through an advanced space vector PWM scheme.