×

ARCP multi-point converter having variable-potential intermediate-circuit capacitances

  • US 6,278,626 B1
  • Filed: 09/05/2000
  • Issued: 08/21/2001
  • Est. Priority Date: 09/02/1999
  • Status: Expired due to Fees
First Claim
Patent Images

1. An auxiliary resonant commutated pole (ARCP) converter, comprising:

  • converter phases, each of said converter phases, including;

    a series circuit containing at least four main switches to be connected electrically in parallel between DC voltage rails including positive and negative DC voltage rails, adjacent ones of said main switches defining junction points therebetween and one of said junction points functioning as an output of a respective converter phase;

    load-relief capacitances, one of said load-relief capacitances connected electrically in parallel with each of said main switches;

    two intermediate-circuit capacitances of identical magnitude to be disposed between the DC voltage rails, said two intermediate-circuit capacitances connected to each other defining a connection point being a voltage neutral point;

    a variable-potential intermediate-circuit capacitance connected to said junction points of said main switches not forming said output and thus form commutation cells in a balanced manner with regard to the positive and negative DC voltage rails, said variable-potential intermediate-circuit capacitance having two capacitance elements having equivalent magnitudes and connected to each other at a junction point defining a further voltage neutral point;

    a resonant inductance having a first connection connected to said output of said converter phase and a second connection; and

    independently controllable bi-directional auxiliary switches connected to said voltage neutral point and said second connection of said resonant inductance.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×