Circuit arrangement for reducing a unidirectional flux component in the soft-magnetic core of a transformer

A circuit arrangement for reducing a unidirectional flux component in a soft-magnetic core of a transformer, comprising:

• a compensation winding magnetically coupled to the soft-magnetic core of the transformer;
• a transductor having power windings connected in series with the compensation winding in a compensation current path, the compensation current path including two parallel branches each containing a power winding of the transductor and an uncontrolled valve connected in series, a flow directions of each uncontrolled valve being counter to one another, and each power winding being magnetically coupled to a respective control winding via a saturable transductor core;
• and
• a first controller to which information about a magnitude and direction of the unidirectional flux component provided by a detector is supplied on an input side, and which generates a control variable on an output side which is supplied to each respective control winding such that a saturation state of the transductor core is variable such that a compensation current is formed in the compensation current path to counteract the unidirectional flux component in the soft-magnetic core of the transformer.