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Phase-shifting transformer system

  • US 5,166,597 A
  • Filed: 08/08/1991
  • Issued: 11/24/1992
  • Est. Priority Date: 08/08/1991
  • Status: Expired due to Fees
First Claim
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1. A phase-shifting transformer system for applying a desired phase shift to the voltage on a transmission line, comprising:

  • a series transformer with mutually magnetically coupled series and excited windings, the series winding for coupling in series with the transmission line;

    a regulating transformer with mutually magnetically coupled exciting and regulating windings, the exciting winding for receiving power from the transmission line;

    a switching network coupling together the regulating winding of the regulating transformer with the excited winding of the series transformer, for establishing a nominal phase-shifting voltage level on the series transformer series winding; and

    a modulator for modulating the voltage of the series transformer series winding about the nominal phase-shifting voltage level provided by the switching network.

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