Patent ID: 7593244
Filing Date: 2009-09-22
Classification: H02J,H02M,Y02B,Y02E

Abstract:
1. Wiring arrangement for limiting the harmonics of the current supplied from an AC mains supply to a frequency converter, which frequency converter can be connected to a three-phase AC mains supply, in which frequency converter is an uncontrolled network bridge ( in which DC intermediate circuit is a choke, in which is a choke part (L in which wiring arrangement is an absorption circuit for limiting the harmonics of the current supplied from the AC electricity supply network, characterized in that the absorption circuit is arranged in the DC intermediate voltage circuit, the absorption circuit contains a serial connection of a choke (L the choke of the DC intermediate voltage circuit is a two-branch DC choke wound onto a common core, which contains pillars and the yokes between them, and in which an additional pillar for the choke of the absorption circuit is arranged in the magnetic core of the choke.