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Self-balanced non-isolated hybrid modular DC-DC converter based on low duty cycle operation and sequential capacitors charging/discharging for medium voltage DC grids

  • US 10,644,596 B2
  • Filed: 12/01/2018
  • Issued: 05/05/2020
  • Est. Priority Date: 12/01/2017
  • Status: Active Grant
First Claim
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1. An electrical converter, comprising:

  • a first half-bridge sub-module;

    a switch; and

    a first capacitor, wherein;

    the half-bridge sub-module is connected to the first capacitor, and the switch is connected to a terminal of the first half-bridge sub-module,the switch includes a plurality of insulated-gate bipolar transistors, andthe switch is configured to carry a sum of two currents during a first state, or a passive filter on a low voltage side is configured to provide a continuous current at the low voltage side.

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