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Hybrid high voltage direct current converter system and method of operating the same

  • US 9,602,021 B2
  • Filed: 03/07/2014
  • Issued: 03/21/2017
  • Est. Priority Date: 03/07/2014
  • Status: Expired due to Fees
First Claim
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1. A method for controlling a hybrid high voltage direct current (HVDC) converter system, the hybrid HVDC converter system including at least one direct current (DC) bus, at least one capacitor commutated converter (CCC), at least one self-commutated converter (SCC), the at least one CCC and the at least one SCC coupled in series to the at least one DC bus, the at least one CCC configured to induce a first DC voltage on the at least one DC bus, the at least one SCC configured to induce a second DC voltage on the at least one DC bus, the first DC voltage and the second DC voltage summed to define a total DC voltage induced on the at least one DC bus, said method comprising at least one of:

  • regulating the total DC voltage induced on the at least one DC bus comprising regulating the first DC voltage through the at least one CCC and regulating the second DC voltage through the at least one SCC substantially simultaneously;

    regulating the total DC voltage induced on the at least one DC bus comprising regulating the second DC voltage through the at least one SCC; and

    regulating the total DC voltage induced on the at least one DC bus comprising regulating the first DC voltage through the at least one CCC;

    wherein the at least one CCC and the at least one SCC are coupled in series.

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