Compact Magnetic Core Design for Power Electronics
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Solution Overview
Problem
Conventional magnetic cores, such as U-shaped or E-shaped cores, occupy excessive space in power electronics components, limiting the spatial efficiency and making it difficult to accommodate other electronic components.
Innovation Solution
A magnetic core design featuring a center region with a through-opening, a base, and a cover, where the base and cover protrude beyond the center region, forming a compact geometry with equal cross-sectional areas to achieve high inductance while minimizing the overall height, allowing for more space for other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional U-shaped or E-shaped magnetic cores are used, then the magnetic core provides sufficient inductance, but the magnetic core occupies excessive space and determines the spatial requirement of the power electronics component
Solution Approach 1:
The magnetic core is divided into three distinct segments: a center region, a base, and a cover. This segmentation allows each part to be optimized independently for its specific function while collectively achieving compact dimensions. The center region provides the magnetic path, the base provides structural support and mounting surface, and the cover completes the magnetic circuit, together achieving high inductance in a compact volume.
Solution Approach 2:
The magnetic core transitions from conventional two-dimensional planar shapes (U-shaped or E-shaped) to a three-dimensional structure with a center region, base, and cover. This dimensional change allows the magnetic path to be folded back on itself, creating a compact toroidal-like configuration that achieves high inductance while minimizing the overall spatial footprint of the component.
2Volume of stationary object
If the magnetic core is designed with compact dimensions, then the spatial requirement is reduced, but the inductance of the magnetic core decreases
Solution Approach 1:
Different regions of the magnetic core are assigned different geometric properties optimized for their specific functions. The center region has a cross-sectional area optimized for magnetic flux density and inductance, while the base and cover have geometries optimized for structural support and compact packaging. This local optimization allows the component to achieve high inductance in a compact overall volume.
Solution Approach 2:
The magnetic core employs a composite geometric structure combining a center region, base, and cover made from magnetic materials. This composite structure creates an efficient magnetic circuit path that maximizes inductance while minimizing the volume of magnetic material required, achieving both compact dimensions and high inductance performance.
3Volume of stationary object
If the center region is shortened in the direction of the center line to achieve compact geometry, then more space is available for other components, but the cross-sectional area required for high inductance cannot be maintained
Solution Approach 1:
The magnetic core utilizes three-dimensional geometry with the center region, base, and cover arranged in space to create an efficient magnetic circuit. This spatial arrangement allows the magnetic path to be compacted in the axial direction while maintaining adequate cross-sectional area through the vertical dimension, achieving both compact length and sufficient inductance.
Solution Approach 2:
The composite structure of center region, base, and cover creates an efficient magnetic circuit that maximizes the magnetic path length and cross-sectional area within a compact volume. This composite geometry allows the magnetic flux to travel through an optimized path that maintains high inductance while minimizing the overall dimensions of the component.
Data Source
AI summary
The invention relates to a magnetic core (1) of an electronic arrangement, comprising a center region (3), a base (4a), which is formed in the shape of a planar plate, and a cover (4b), wherein the center region (3) is arranged between the base (4a) and the cover (4b), wherein a through-opening (2) with a center line (X) is formed in the center region (3), wherein a first cross-sectional area (9) of the magnetic core (1) in a first section plane (6), which is parallel to the base (4a) and in which the center line (X) is located, is substantially equal to a second cross-sectional area (8) of the magnetic core (1) in a second section plane (7), which is perpendicular to the first section plane (6) and in which the center line (X) is located, and wherein the base (4a) and the cover (4b) protrude beyond the center region (3) in the direction of the center line (X) on at least two mutually opposing sides.