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A New Synchronization Technique of a Three-Phase Grid Tied Inverter for Photovoltaic Applications

Author

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  • Mohannad Jabbar Mnati
  • Dimitar V. Bozalakov
  • Alex Van den Bossche

Abstract

Three-phase grid synchronization is one of the main techniques of the three-phase grid connected power inverters used in photovoltaic systems. This technique was used to reach the fast and accurate three-phase grid tied inverter synchronization. In this paper a new synchronization method is presented on the basis of integrating the grid voltage two times (line-to-line or phase voltage). This method can be called “double integral synchronization method” (DISM) as it integrates the grid voltage signals two times to generate the reference signals of three-phase photovoltaic inverter currents. DISM is designed and simulated in this paper to operate in both analog and digital circuits of three-phase photovoltaic inverter system with the same topology. The digital circuit design and dsPIC33FJ256GP710A as a microcontroller (the dsPIC33FJ256GP710A with the Explorer 16 Development Board from microchip) was used practically in this paper to generate and control the sine pulse width modulation (SPWM) technique according to DISM for three-phase photovoltaic inverter system. The main advantage for this method (DISM) is learning how to eliminate the integration constant to generate the reference signals without needing any reference signals or truth table, just the line-to-line or phase voltage of grid.

Suggested Citation

  • Mohannad Jabbar Mnati & Dimitar V. Bozalakov & Alex Van den Bossche, 2018. "A New Synchronization Technique of a Three-Phase Grid Tied Inverter for Photovoltaic Applications," Mathematical Problems in Engineering, Hindawi, vol. 2018, pages 1-13, July.
    • Handle: RePEc:hin:jnlmpe:7852642
    DOI: 10.1155/2018/7852642
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