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CSI based drive having feedforward control of inverter input voltage

  • US 6,269,010 B1
  • Filed: 02/29/2000
  • Issued: 07/31/2001
  • Est. Priority Date: 02/29/2000
  • Status: Expired due to Term
First Claim
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1. A motor drive, comprising:

  • a rectifier for converting alternating current into direct current;

    a current source inverter for converting direct current into alternating current;

    a d.c. link choke interconnecting the rectifier and the inverter;

    an inverter controller for controlling the inverter, said controller generating a desired d.c. link choke current;

    means for determining a d.c. input voltage of the inverter or current required thereby and generating a voltage or current based output signal;

    means for determining the actual d.c. link current;

    a rectifier controller, including a compensator receiving as inputs the desired and actual d.c. link currents, a summer for adding the output of the compensator and the output signal of the means for determining the d.c. input voltage of the inverter or current required thereby, and a switching pattern generator, receiving the output of the summer, for controlling switches in the rectifier.

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