Compensated Bus Bar Assembly for Power Electronics
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Solution Overview
Problem
Existing busbar arrangements face challenges in minimizing current forces between conductor structures, particularly during short circuits, while also requiring efficient use of installation space and preventing unwanted deformation.
Innovation Solution
A busbar arrangement is designed by separating a first conductor structure into two elements, with a second conductor structure, where the elements are not directly electrically connected, allowing for current force compensation through Lorentz forces, and using spacers and mechanical connections to maintain distances and absorb forces, ensuring stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conductor structures are placed close together to save installation space, then space utilization is improved, but current forces between conductors increase during short circuits
Solution Approach 1:
The first conductor structure is divided into two separate conductor structure elements. These elements are arranged relative to the second conductor structure such that current forces acting on the second conductor structure are minimized through compensation effects, while maintaining compact installation space.
Solution Approach 2:
The conductor structure elements are designed with asymmetric arrangement where the first conductor structure element is positioned at a first distance from the second conductor structure, and the second conductor structure element is positioned at a second distance, creating different magnetic field interactions that result in force compensation.
2Stability of the object's composition
If conductor structures are rigidly connected to maintain stability, then structural stability is improved, but unwanted deformation is prevented while allowing force absorption
Solution Approach 1:
A spacer is pre-positioned between the conductor structure elements to maintain predetermined distances. This spacer acts as a cushioning element that absorbs current forces during short circuits, preventing unwanted deformation while maintaining structural stability through mechanical connections.
3Reliability
If direct electrical connection is made between first and second conductor structures, then electrical connectivity is improved, but current forces acting between them increase
Solution Approach 1:
An additional electrical connection is introduced as an intermediary element between the first and second conductor structures. This intermediary connection path allows electrical current to flow while the spatial arrangement of conductor structure elements compensates for current forces, reducing the direct force interaction between the main conductor structures.
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
The solution effectively reduces current forces between conductor structures, prevents deformation, and allows for efficient use of space, enabling safe and reliable electrical contacting of power electronic components.
Implementation Method 1
allowing for current force compensation through Lorentz forces
Data Source
Figure 1a~2b
Figure 3a~4b
Figure 5a~6
AI summary
The invention relates to a bus bar assembly, in particular for connecting power electronic semiconductor components, wherein the bus bar assembly comprises a first conductor structure and a second conductor structure, wherein the first conductor structure and the second conductor structure are not directly electrically connected, wherein the first conductor structure comprises a first partial conductor structure and a second partial conductor structure, wherein the first partial conductor structure and the second partial conductor structure are electrically connected, wherein the first and the second partial conductor structure are designed and arranged in relation to the second conductor structure in such a way that a first current force between the first partial conductor structure and the second conductor structure at least partially compensates a second current force between the second partial conductor structure and the second conductor structure. The invention further relates to a method for producing a bus bar assembly.