Magnetic component and power conversion apparatus including the same

A power conversion apparatus comprising:

• a magnetic component comprising a plurality of coils magnetically coupled with each other;
• and
• a core forming a closed magnetic circuit, wherein
• at least part of portions in inner periphery side regions of respective plurality of coils are arranged overlapping with each other in a coil axial direction;
• when viewed from the coil axial direction, at least one of the plurality of coils is defined as a specific coil, and a region of the specific coil from an inner periphery edge to an outer periphery edge thereof in a coil radial direction is defined as a specific coil region;
• the specific coil region has a portion which is not overlapped with at least one coil in the coil axial direction other than the specific coil that constitutes the specific coil region, in a region from the inner periphery edge to the outer periphery edge thereof in the coil radial direction;
• a plurality of voltage units;
• and
• a plurality of power conversion circuits each connected to corresponding voltage unit of the plurality of voltage units, wherein
• the magnetic component includes the plurality of coils each connected to corresponding power conversion circuit of the plurality of power conversion circuits, wherein
• when viewed from the coil axial direction, a specific gravity-center defined as a gravity-center of a two-dimensional figure formed in the inner periphery side of the specific coil, where a mass per unit area of respective portions in a surface direction orthogonal to the coil axial direction are mutually the same, and a gravity-center of a two-dimensional figure formed in the inner periphery side of at least one coil other than the specific coil, where a mass per unit area of respective portions in the surface direction orthogonal to the coil axial direction are mutually the same, are arranged at mutually shifted positions,
• the core includes a pair of base portions facing with each other in the coil axial direction, an inner leg portion extending from the base portions and provided in an inner periphery side of the plurality of coils when viewed from the coil axial direction, and a pair of outer leg portions extending from the base portions and provided in both sides of the plurality of coils in a lateral direction orthogonal to the coil axial direction;
• and
• when viewed from the coil axial direction, an inner periphery edge of the specific coil includes:
• a pair of first linear edges formed in an arrangement direction along which the specific gravity-center and an inner leg gravity-center are arranged, facing with each other in a direction orthogonal to the arrangement direction, the inner leg gravity-center being a gravity-center of a two-dimensional figure formed in an existing region of the inner leg portion, where mass per unit area of respective portions in a surface direction orthogonal to the coil axial direction are mutually the same;
• a second linear edge that couples first end portions of the pair of first linear edges, the first end portions being in an anti-eccentric side as an inner leg gravity-center side with respect to the specific gravity-center;
• and
• a protruded edge that couples second end portions of the pair of first linear edges, the second end portion being in an eccentric side opposite to the anti-eccentric side in the arrangement direction.