Adhesive-Bonded Transformer Core Sheets for Lower Loss and Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current power transformer core designs face challenges in mechanical stability during manufacturing and transport, requiring complex clamping structures to manage high mechanical forces, which can lead to increased losses in magnetic and electrical energy.
Innovation Solution
A core arrangement where core sheets are attached using an adhesive substance, creating a simplified and self-supporting structure that reduces the need for complex clamping components and allows for reduced energy losses by applying an adhesive substance to the core sheets, which can also serve as an insulation layer, thereby decreasing the core's thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If complex clamping structures (support beams, bolts, flitch plates) are used to strengthen the core during manufacturing and transport, then mechanical stability is improved, but device complexity and energy losses increase
Solution Approach 1:
The patent removes the complex clamping structure (support beams, bolts, flitch plates) from the transformer core design. Instead of adding strengthening components, the invention uses a simplified core construction that achieves mechanical stability through the core sheets themselves, eliminating the need for separate clamping elements and reducing overall device complexity.
Solution Approach 2:
The patent specifies precise thickness parameters for the core sheets (0.18-0.3mm) and uses adhesive substances with specific properties to bond the sheets. By optimizing these physical parameters, the core achieves sufficient mechanical strength without requiring additional clamping structures, thus resolving the contradiction between stability and complexity.
2Stability of the object's composition
If complex clamping structures are used to manage mechanical forces, then mechanical stability is improved, but magnetic and electrical energy losses increase
Solution Approach 1:
The patent eliminates the clamping structure that causes energy losses. By removing support beams, bolts, and flitch plates from the design, the source of magnetic and electrical losses associated with these metallic components is eliminated, while mechanical stability is maintained through the adhesive-bonded core sheet construction.
Solution Approach 2:
The patent replaces the mechanical clamping system (bolts, beams, plates) with a chemical bonding system (adhesive substance). This substitution eliminates the mechanical contacts that generate friction and eddy currents, thereby reducing magnetic and electrical energy losses while maintaining structural integrity.
3Device complexity
If adhesive substance is applied to attach core sheets, then device complexity is reduced and energy losses decrease, but manufacturing process complexity increases
Solution Approach 1:
The adhesive substance is applied to the core sheets before stacking and assembly. This preliminary application of adhesive ensures that the sheets are already bonded when assembled, eliminating the need for subsequent clamping operations and simplifying the overall manufacturing process despite the added step of adhesive application.
Solution Approach 2:
The patent replaces complex mechanical assembly operations (bolting, clamping, supporting) with a simpler adhesive bonding process. While adhesive application requires precision, it eliminates multiple mechanical fastening steps, overall simplifying the manufacturing process by substituting a single chemical bonding operation for multiple mechanical operations.
4Loss of energy
If core sheet thickness is reduced to 0.18-0.3mm, then energy losses are reduced, but mechanical strength decreases
Solution Approach 1:
The patent uses composite construction by bonding multiple thin core sheets (0.18-0.3mm each) together with adhesive substance. The individual thin sheets minimize eddy current losses, while the stacked composite structure with adhesive bonding provides the necessary mechanical strength, resolving the contradiction between reduced thickness for lower losses and sufficient strength for mechanical stability.
Solution Approach 2:
The patent optimizes the thickness parameter of individual core sheets to the range 0.18-0.3mm, which minimizes energy losses while maintaining adequate mechanical properties when stacked. By precisely controlling this parameter and combining multiple sheets, the invention achieves both low energy losses and sufficient strength without requiring thicker individual sheets.
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 results in a more stable and efficient transformer core with reduced magnetic and electrical energy losses, lower labor costs due to fewer mounting parts, and decreased noise from reduced vibrations.
Implementation Method 1
The core sheets are attached to each other by means of an adhesive substance
Implementation Method 2
which can also serve as an insulation layer, thereby decreasing the core's thickness
Data Source
AI summary
A core arrangement for a transformer is disclosed. The core arrangement comprises a plurality of core sheets. The core sheets have a thickness in the interval of 0.18-0.3 mm. The core sheets are attached to each other by means of an adhesive substance to make the core arrangement self-supporting.