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Device and method for discharging an energy accumulator in a high-voltage grid

  • US 9,948,093 B2
  • Filed: 12/29/2011
  • Issued: 04/17/2018
  • Est. Priority Date: 02/08/2011
  • Status: Expired due to Fees
First Claim
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1. A device for discharging an energy storage device (C) in a high-voltage network (3), havinga direct-current converter (5) connected downstream of the high-voltage network (3),a low-voltage network (4) connected downstream of the direct-current converter (5) and configured to discharge the energy storage device (C),an energy supply network (7) connected downstream of the direct-current converter (5) and connected in parallel to the low-voltage network (4) for supplying energy to a control circuit (9) of the direct-current converter (5),a first controllable switching element (S) that is connected in the connecting line between the direct-current converter (5) and the low-voltage network (4) wherein in the case of a malfunction of the low-voltage network (4) the direct-current converter (5) and the energy supply network (7) can be separated from the low-voltage network (4), anda consumer connected downstream of the low-voltage network (4),wherein the energy supply network (7) is connected to the direct-current converter (5) by a first electric component (10;

  • 20) that prevents a backflow of current from the energy supply network (7) into the direct-current converter (5),wherein the energy supply network (7) is connected to the low-voltage network (4) by a second electric component (11;

    21) that prevents a backflow of current from the energy supply network (7) into the low-voltage network (4).

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