Electrical damping device for a dc voltage bus

Abstract

An electrical damping device comprises a positive path that comprises a first resistive-inductive (RL) network in parallel with a second RL network, wherein the positive path is coupled between the positive terminals of the DC ports. A negative path comprises a third RL network in parallel with a fourth RL network, wherein the negative path is coupled between the negative terminals of the DC ports. A first transformer is defined by a first inductance of first RL network and a third inductance of the third RL network, wherein the first transformer comprises windings arranged for mutual coupling between the positive path and the negative path. A second transformer is defined by a second inductance of the second RL network and a fourth inductance of the fourth RL network, wherein the second transformer comprises windings arranged for mutual coupling between the positive path and the negative path.