A magnetic component has a core on which windings are wound. The windings are electrically connected in series to constitute a coil of a first reactor. The winding constitutes a coil of a second reactor. The core has a leg portion on which the winding is wound, a leg portion on which the winding is wound, and a leg portion on which the winding is wound. When a current flows through the windings, magnetic fluxes produced from the windings, respectively, and flowing through the winding counteract each other. Furthermore, when a current flows through the winding, induced voltages produced from the windings, respectively, by the magnetic flux produced by the winding counteract each other.

Single phase inductors have non-linear inductance values, and M-phase coupled inductors having non-linear leakage inductance values. Each inductor includes, for example, at least one of the following: a saturable magnetic element, a gap of non-uniform thickness, a core formed of a distributed gap material, or a non-homogeneous core. A DC-to-DC converter includes an inductor having a non-linear inductance value, a switching subsystem, and an output filer. Another DC-to-DC converter includes an output filter, a coupled inductor having non-linear leakage inductance values, and switching subsystems.

A coupled inductor and a power converter includes at least two input ends, an output end, a common magnetic core, at least two first windings, and at least two second windings. The common magnetic core includes at least two magnetic cylinders, and the number of the at least two magnetic cylinders corresponds to the number of the at least two input ends; and one first winding and one second winding are twined in parallel on each cylinder among the at least two magnetic cylinders, and the first windings and the second windings on the at least two magnetic cylinders are mutually connected between the at least two input ends and the output end to form mutually coupled inductances and when currents that flow into the at least two input ends are equal, make the first winding and the second winding on each cylinder generate opposite magnetic potentials.

A fault current limiter is provided that comprises a fault current limiter comprising first, second and third magnetically saturable cores. The fault current limiter comprises a magnetic biasing arrangement arranged to produce a first magnetic circuit in the first magnetically saturable core, a second magnetic circuit in the second magnetically saturable core, and a third magnetic circuit in the third magnetically saturable core; first and second AC coils connected in series and connected to a first phase AC source, wherein the first AC coil is wound on a portion of the first magnetically saturable core and the second AC coil is wound on a portion of the third magnetically saturable core; third and fourth AC coils connected in series and connected to a second phase AC source, wherein the third AC coil is wound on a portion of the first magnetically saturable core and the fourth AC coil is wound on a portion of the second magnetically saturable core; and fifth and sixth AC coils connected in series and connected to a third phase AC source, wherein the fifth AC coil is wound on a portion of the second magnetically saturable core and the sixth AC coil is wound on a portion of the third magnetically saturable core.

The invention relates to a coupling device (4) for four phases of a multi-phase converter (2). Said coupling device (4) includes four coupling modules (6, 8, 12, 14), each of which encompasses four parallel through-holes. At least one section of a conductor loop (18, 20, 22, 24) for a phase. At least one section of a conductor loop (18, 20, 22, 24) for a phase penetrates a through-hole of a coupling module (6, 8, 12, 14), sections of conductor loops (18, 20, 22, 24) for at least two phases penetrating all four through-holes of a coupling module (6, 8, 12, 14).

The application provides an integrated inductor and a power module. The integrated inductor includes a magnetic core, comprising: two winding columns disposed in parallel, each provided with an air gap; a first cover plate disposed under the two winding columns; a second cover plate disposed above the two winding columns, and opposite to the first cover plate; and a common column connected between the first and second cover plates, and disposed on one or both sides of the two winding columns; and two windings are respectively wound on the two winding columns, wherein a line frequency current component of a current flowing through each of the two windings surrounds the winding columns in the same direction, a phase of high-frequency current component of the current flowing through each of the two windings differs by 180, and a coupling coefficient between the two windings is less than 0.1.