Soft-Magnetic Winding Component Thermal Bridge Design
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Solution Overview
Problem
Existing cooling methods for soft-magnetic powder composite materials in high power density applications are inefficient, as they struggle to effectively dissipate heat due to poor thermal conductivity, leading to inadequate cooling and mechanical stress issues.
Innovation Solution
A recess is introduced in the electromagnetic flow conduction region of the component, allowing a connector part with greater mechanical, electrical, and thermal conductivity to project through and form a bridge, enhancing heat dissipation and mechanical support while maintaining flow conduction integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a support disk composed of aluminum is inserted between the yoke parts to improve cooling, then thermal conductivity is improved, but the cooling efficiency is insufficient for high power densities
Solution Approach 1:
The connector part is divided into multiple functional zones: a first region with high thermal conductivity for heat conduction from the winding, a second region forming a heat sink with cooling channels, and a third region providing mechanical support. This segmentation allows each region to optimize its specific function, achieving effective cooling at high power densities
Solution Approach 2:
The connector part uses composite construction combining materials with different properties: highly thermally conductive materials in the heat conduction region, heat sink materials with cooling channels, and mechanically strong materials for support. This composite approach resolves the contradiction by integrating multiple material advantages into a single component
2Temperature
If cooling channels are provided in the yoke parts, then cooling is improved, but the design complexity increases significantly
Solution Approach 1:
The connector part merges multiple functions into a single component: heat conduction from the winding, heat sink formation with cooling channels, mechanical support, and electrical connection. This consolidation improves cooling performance while reducing design complexity compared to separate components for each function
Solution Approach 2:
The connector part serves multiple purposes simultaneously: it conducts heat from the winding, provides cooling channels for fluid flow, offers mechanical support for the stator, and enables electrical connections. This multi-functionality achieves effective cooling without increasing overall design complexity
3Temperature
If a recess is provided in the electromagnetic flow conduction region for cooling, then cooling capability is improved, but the flow conduction may be disrupted
Solution Approach 1:
The recess is strategically positioned and dimensioned to provide adequate cooling capability while maintaining sufficient magnetic flow conduction path in the remaining component material. The local modification creates cooling capacity without compromising overall flow conduction integrity
4Ease of manufacture
If soft-magnetic powder composite material is used for the component, then manufacturing flexibility is improved, but mechanical strength and thermal conductivity are reduced
Solution Approach 1:
The connector part uses composite construction combining materials with different properties: highly thermally conductive materials in the heat conduction region, heat sink materials with cooling channels, and mechanically strong materials for support. This composite approach resolves the contradiction by integrating multiple material advantages into a single component
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables effective cooling and mechanical reinforcement, allowing the arrangement to withstand high power densities without compromising flow conduction, and simplifies energy supply and design, particularly in compact and complex configurations.
Implementation Method 1
the connector part that projects through this recess forms a thermal bridge that bridges the component
Implementation Method 2
the component conducts an electromagnetic flow of the winding
Data Source
AI summary
An arrangement has at least one electrical winding having a one-part or multi-part component produced from a soft-magnetic powder composite material, which component conducts an electromagnetic flow of the winding, at least in certain regions, and has a recess provided in the region of this flow conduction, and having a one-part or multi-part, particularly metallic connector part, which has a greater mechanical strength and/or electrical conductivity and/or thermal conductivity as compared to the component, and projects into the recess of the component. In order to achieve particular thermal, mechanical and/or electrical properties, the recess penetrates the component in the region of its flow conduction, and the connector part that projects through this recess forms a mechanical, electrical and/or thermal bridge that bridges the component.