Bidirectional DC converter comprising a core with permanent magnetization

A method for operating a DC/DC converter comprising at least one switching member and at least one inductor for intermediate storage of the energy transferred by the DC/DC converter, wherein the inductor has a core with permanent magnetization wherein the permanent magnetization comprises a polarity that opposite of another polarity in which the core is magnetized during operation in a main direction, and wherein the DC/DC converter is configured for bidirectional operation with a first energy transfer direction, as the main direction, and a second energy transfer direction which is opposite to the first energy transfer direction, comprising:

• switching the at least one switching member according to a first operating mode to establish a first energy flow direction through the inductor and the core with the polarity that is opposite of the another polarity,
• switching the at least one switching member according to a second operating mode which is different than the first operating mode to establish a second energy flow direction in the inductor which is opposite from the first energy flow direction,
• wherein the at least one switching member is switched in the first operating mode in the first energy transfer direction with a lower switching frequency than in the second operating mode in the second energy transfer direction.