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Apparatus and method for charging an electrical energy store from an AC voltage source

  • US 9,231,433 B2
  • Filed: 11/07/2013
  • Issued: 01/05/2016
  • Est. Priority Date: 11/08/2012
  • Status: Active Grant
First Claim
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1. An apparatus for charging an electrical energy store from an AC voltage source, the apparatus comprising:

  • a rectifier device with a capacitor interconnected in parallel with the rectifier device;

    a current controller device having a switch, the current controller device interconnected with the rectifier device;

    a converter device interconnected with the current controller device, the converter device having at least one first half-bridge comprising two switches connected in series;

    an inductor interconnected with a connection point between the two switches of the first half-bridge and with the current controller; and

    a three-phase electric motor including a first winding interconnected at the connection point between the two switches of the at least one first half-bridge of the converter device,wherein, depending on the voltage of the AC voltage source and a current through the inductor, the switch of the current controller device and one of the switches of the first half-bridge of the converter device are switchable by a controller so that a charging current for charging the electrical energy store drawn from the AC voltage source and a voltage of the AC voltage source are substantially in phase.

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