Multi-level inverter

  • US 10,886,831 B2
  • Filed: 05/08/2020
  • Issued: 01/05/2021
  • Est. Priority Date: 03/26/2014
  • Status: Active Grant
First Claim
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1. A single phase multilevel inverter comprising:

  • first and second DC inputs configured to receive a DC voltage;

    first and second AC outputs configured to output an AC voltage having a first frequency;

    a first circuit comprising first and second input terminals, a first flying capacitor and a first voltage output terminal coupled to the first AC output;

    a second circuit comprising third and fourth input terminals, a second flying capacitor and a second voltage output terminal coupled to the second AC output; and

    a first plurality of switches configured to operate at the first frequency and a second plurality of switches configured to operate at the first frequency;

    wherein;

    during a first half cycle of the AC voltage, the first plurality of switches is configured to connect the first DC input to the first input terminal, the second DC input to the fourth input terminal, and the second input terminal to the third input terminal; and

    during a second half cycle of the AC voltage, the second plurality of switches is configured to connect the first DC input to the third input terminal, the second DC input to the second input terminal, and the fourth input terminal to the first input terminal.

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