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

摘要

Apparatus for charging an electrical energy store from an AC voltage source. The apparatus includes a rectifier device with a capacitor interconnected in parallel with the rectifier device A current controller device is interconnected with the rectifier device. A converter device is interconnected with the current controller device. The converter device includes at least one first half-bridge having two switches connected in series, An inductor is interconnected with a connection point of the switches of the first half-bridge Depending on the voltage of the AC voltage source and a current through the inductor a switch of the current controller device and one of the switches of the first half-bridge of the converter device are switchable by means of a controller in such a manner that a 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.

主权项

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.