Siemens Aktiengesellschaft

Tobias Hofmann

Bernd Segger

Sebastian Raith

Alfred Böhm

A network filter for connecting a converter to a 3-phase supply network includes in each phase a toroidal inductor which is connected in series with a commutation inductor at a respective first connection point, and a capacitor circuit having at least four capacitances, wherein first terminals of a first, a second and a third capacitance is connected in one-to-one correspondence to a respective one of the first connection points. Second terminals of the first, second and third capacitance are connected at a common second connection point, with a fourth capacitance being connected between ground and the common second connection point. The windings of the toroidal inductors can be formed of the connecting lines which connect the corresponding first terminals to the three phases of the supply network.

Network filter for a converter for connection of the converter to a 3-phase supply network

A multi-axes industrial processing machine with a multi-axes electrical drive system and at least two axle drives that have each an axle module and a built-in motor is disclosed. The machine further includes an impedance that is transformer-coupled with a supply module through an annular core. Either the phase lines on the AC side of the supply module or the output lines of the DC side of the supply module as well as an additional winding are wound on the annular core. The impedance is connected in parallel to the additional winding.

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Forchheim, Germany

Tobias Hofmann