×

Soft-start of DC link capacitors for power electronics and drive systems

  • US 6,744,644 B2
  • Filed: 02/13/2002
  • Issued: 06/01/2004
  • Est. Priority Date: 10/02/2001
  • Status: Active Grant
First Claim
Patent Images

1. A soft-start system for electrical power systems comprising:

  • a capacitor connected to a first bus of a DC link;

    a resistor connected to a second bus of the DC link, wherein the resistor and capacitor are connected in series between the first and second bus;

    a switching device co-packaged with a front-end rectifier in an Intelligent Power Module (IPM), the switching device being electrically connected in parallel with the resistor; and

    a triggering circuit for measuring a DC voltage on the DC link and activating the switching device to short circuit the resistor.

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