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Five-level inverter with dual reference modulation technique for grid-connected PV system

Author

Listed:
  • Rahim, N.A.
  • Selvaraj, J.
  • Krismadinata, C.

Abstract

This paper presents a single-phase five-level grid-connected PV inverter with a novel dual reference modulation technique. Two reference signals identical to each other with an offset equivalent to the amplitude of the triangular carrier signal were used to generate PWM signals. The inverter consists of a full-bridge inverter and an auxiliary circuit comprising four diodes and a switch. The inverter produces output voltage in five levels: zero, +1/2Vdc, Vdc, −1/2Vdc and −Vdc. A digital PI current control algorithm is implemented in DSP TMS320F2812 to keep the current injected into the grid sinusoidal and to have high dynamic performance with low THD. The validity of the proposed inverter is verified through simulation and implemented in a prototype. The experimental results are compared with conventional single-phase three-level grid-connected PWM inverter in terms of THD.

Suggested Citation

  • Rahim, N.A. & Selvaraj, J. & Krismadinata, C., 2010. "Five-level inverter with dual reference modulation technique for grid-connected PV system," Renewable Energy, Elsevier, vol. 35(3), pages 712-720.
    • Handle: RePEc:eee:renene:v:35:y:2010:i:3:p:712-720
    DOI: 10.1016/j.renene.2009.08.021
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    Citations

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    Cited by:

    1. Meenakshi Jayaraman & Sreedevi VT, 2017. "Power Quality Improvement in a Cascaded Multilevel Inverter Interfaced Grid Connected System Using a Modified Inductive–Capacitive–Inductive Filter with Reduced Power Loss and Improved Harmonic Attenu," Energies, MDPI, vol. 10(11), pages 1-23, November.
    2. Nasiri, Reza & Radan, Ahmad, 2011. "Pole-placement control of 4-leg voltage-source inverters for standalone photovoltaic systems: Considering digital delays," Renewable Energy, Elsevier, vol. 36(2), pages 858-865.
    3. Nasiri, Reza & Radan, Ahmad, 2011. "Adaptive pole-placement control of 4-leg voltage-source inverters for standalone photovoltaic systems," Renewable Energy, Elsevier, vol. 36(7), pages 2032-2042.
    4. Hassaine, L. & OLias, E. & Quintero, J. & Salas, V., 2014. "Overview of power inverter topologies and control structures for grid connected photovoltaic systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 30(C), pages 796-807.
    5. Nasiri, Reza & Radan, Ahmad, 2011. "Adaptive decoupled control of 4-leg voltage-source inverters for standalone photovoltaic systems: Adjusting transient state response," Renewable Energy, Elsevier, vol. 36(10), pages 2733-2741.
    6. Yilmaz, Saban & Dincer, Furkan, 2017. "Impact of inverter capacity on the performance in large-scale photovoltaic power plants – A case study for Gainesville, Florida," Renewable and Sustainable Energy Reviews, Elsevier, vol. 79(C), pages 15-23.
    7. Lalili, D. & Mellit, A. & Lourci, N. & Medjahed, B. & Berkouk, E.M., 2011. "Input output feedback linearization control and variable step size MPPT algorithm of a grid-connected photovoltaic inverter," Renewable Energy, Elsevier, vol. 36(12), pages 3282-3291.
    8. Barghi Latran, Mohammad & Teke, Ahmet, 2015. "Investigation of multilevel multifunctional grid connected inverter topologies and control strategies used in photovoltaic systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 42(C), pages 361-376.

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