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Solar inverter and control method

  • US 8,184,460 B2
  • Filed: 05/28/2009
  • Issued: 05/22/2012
  • Est. Priority Date: 05/28/2009
  • Status: Active Grant
First Claim
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1. A power generation system comprising:

  • a photovoltaic (PV) module to generate direct current (DC) power;

    a controller for determining a maximum power point for the power generation system;

    a boost converter comprising boost inductors, diodes, and switching devices for receiving control signals from the controller to boost the power from the PV module to a threshold voltage required to inject sinusoidal currents into the grid;

    a direct current (DC) to alternating current (AC) multilevel inverter to supply the power from the PV module to a power grid; and

    a bypass circuit for bypassing the boost inductors, diodes, and switching devices of the boost converter when an input voltage of the DC to AC multilevel inverter is higher than or equal to the threshold voltage.

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