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Method and circuit for the improved use of capacitance in an intermediate circuit

  • US 10,411,614 B2
  • Filed: 05/09/2014
  • Issued: 09/10/2019
  • Est. Priority Date: 05/17/2013
  • Status: Active Grant
First Claim
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1. A method for use of a capacitance in an intermediate circuit, the capacitance being connected in parallel with an inverter between a DC voltage connection and a ground connection, the method comprising:

  • charging the capacitance via an energy source connected to the DC voltage connection;

    detecting a voltage dip in a voltage across the capacitance in the intermediate circuit; and

    compensating for the voltage dip in the voltage by feeding electrical energy proportional to the voltage dip into a ground connection of the capacitance with a compensation unit, in response to detecting the voltage dip, the compensation unit having an energy buffer configured to store electric energy from the intermediate circuit and supply at least some of the electric energy that is fed into the ground connection.

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