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Grid-tied power conversion circuits and related techniques

  • US 8,670,254 B2
  • Filed: 01/21/2011
  • Issued: 03/11/2014
  • Est. Priority Date: 01/22/2010
  • Status: Active Grant
First Claim
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1. A power conversion circuit having an input port configured to receive a direct current (DC) input and an output port at which an alternating current (AC) output is provided, the power conversion circuit comprising:

  • an inverter circuit having an input port coupled to the input port of the power conversion circuit and providing an AC output current at an inverter output port;

    a transformer circuit having a low-voltage port and a high-voltage port, said transformer circuit configured to provide voltage transformation between the low-voltage port and the high-voltage port;

    a cycloconverter circuit having a cycloconverter input port coupled to said transformer and an output port coupled to the output port of the power conversion circuit; and

    a buffer block circuit series coupled between at least two of;

    said inverter;

    said transformer; and

    said cycloconverter circuit.

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