Patent ID: 8653931

Claim:
A power conversion system, comprising: a filter circuit, comprising: a plurality of AC input nodes coupleable with a multi-phase AC electrical power source for transfer of AC electrical power between the filter circuit and the power source, a multi-phase filter AC output, and an integrated choke assembly with: a magnetic core structure comprising: an outer structure with an integer number N outer portions spaced from a core structure center, N being greater than two, each outer portion having an outer portion width dimension, and an integer number N branch portions individually extending inward from the outer core structure toward the center, each branch portion having a branch portion width dimension greater than the outer portion width dimension, and a plurality of windings individually wound around a corresponding one of the outer portions, individual windings forming an inductance of the filter circuit; a source-side converter comprising a plurality of converter AC nodes coupled with the multi-phase filter output, a DC output with first and second DC nodes, and a plurality of converter switching devices individually coupled between one of the converter AC nodes and one of the first and second DC nodes, the converter switching devices individually operative to selectively couple the corresponding converter AC node with the corresponding DC node according to a corresponding converter switching control signal; an intermediate DC circuit comprising first and second DC current paths coupled with the first and second DC nodes of the converter; and a switch control system 140 operative to provide the converter switching control signals to the converter.