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Converter and submodule of a converter for charging or discharging an energy store

  • US 8,981,712 B2
  • Filed: 11/19/2009
  • Issued: 03/17/2015
  • Est. Priority Date: 11/19/2009
  • Status: Active Grant
First Claim
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1. A submodule for charging or discharging an energy store, the submodule comprising:

  • output terminals;

    a capacitor unit;

    a power semiconductor circuit having power semiconductors which can be switched on and off, said capacitor unit and said power semiconductor circuit connected to one another such that, depending on a driving of said power semiconductors in said power semiconductor circuit, at least a voltage drop across said capacitor unit and a zero voltage being generated selectively at said output terminals of the submodule;

    a DC-to-DC converter connected to said capacitor unit; and

    an energy store connected to said DC-to-DC converter, the DC-to-DC converter configured to convert a capacitor voltage drop across said capacitor unit into a charging voltage, required for charging said energy store, and to convert a discharging voltage drop across said energy store during discharge into the capacitor voltage.

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