CPC H01F 27/24 (2013.01) [H01F 27/28 (2013.01); H02M 5/458 (2013.01); H03H 7/01 (2013.01); H03H 7/427 (2013.01); H03H 1/0007 (2013.01)] | 20 Claims |
1. An inductive filtering device comprising a plurality of grouped electrical conductors, each intended to carry a different voltage, and at least two toric magnetic cores, each formed around a central void, the at least two toric magnetic cores having different magnetic lengths, the plurality of grouped electrical conductors being wound together around the at least two toric magnetic cores by passing through the central voids of the at least two toric magnetic cores, wherein the at least two toric magnetic cores are formed in different materials, the material of the magnetic core having the shortest magnetic length exhibiting a maximum relative magnetic permeability lower than or equal to 3000 and lower than that of the material of the magnetic core having the longest magnetic length; wherein the plurality of grouped electrical conductors together form at least one turn wound around the at least two toric magnetic cores and at least one other turn wound around the magnetic core having the shortest magnetic length without being wound around the other of the at least two toric magnetic cores.
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