Stationary Induction Device Iron Core Support Plates
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Solution Overview
Problem
Large-sized wound iron cores using amorphous magnetic ribbons are prone to buckling and deformation, leading to increased magnetic loss due to their weight and stress in the laminating direction, which existing support structures do not adequately address.
Innovation Solution
A stationary induction electric device design featuring a first iron core block in an annular shape, a second iron core block surrounding the outer periphery, a winding around both, and support plates that vary in curvature radius to distribute weight and stress effectively, reducing deformation and magnetic loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a large-sized wound iron core using amorphous magnetic ribbons is used, then lower magnetic loss is achieved, but the iron core is prone to buckling and deformation due to its own weight
Solution Approach 1:
The iron core is divided into multiple discrete support points along its length, with support members positioned at specific intervals to provide localized support without compromising the continuous magnetic path. This segmentation approach allows the long iron core to be supported at critical locations, preventing buckling while maintaining structural integrity.
Solution Approach 2:
Support members are pre-installed within the coil structure before the iron core is assembled, creating a predetermined support framework that actively counteracts the weight-induced buckling forces. This preliminary positioning ensures that the iron core maintains its intended geometry from the outset, preventing deformation before it occurs.
2Stability of the object's composition
If support members are added to suppress deformation, then structural stability is improved, but device complexity increases
Solution Approach 1:
The support members serve multiple functions simultaneously: they provide mechanical support to prevent buckling, maintain the geometric accuracy of the iron core, and are integrated into the coil structure as part of the overall assembly. This multi-functionality reduces the need for separate dedicated support components, thereby limiting the increase in device complexity.
Solution Approach 2:
The support members are nested within the coil structure, with the iron core then assembled around both the coil and support members. This nested arrangement allows the support function to be embedded within the existing structural framework rather than adding external attachments, minimizing the increase in overall device complexity.
3Power
If the iron core is made larger to meet power requirements, then power capacity is improved, but the weight and stress in laminating direction increase causing deformation
Solution Approach 1:
The support members act as counterbalancing elements distributed along the iron core, providing upward support forces that counteract the downward gravitational load. By positioning these support members at critical locations, the effective load on any single section of the iron core is reduced, preventing weight-induced deformation even as the overall core size increases for higher power capacity.
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 design effectively reduces magnetic loss by distributing weight and stress, maintaining the performance of the iron core while minimizing its volume and weight, thus improving the efficiency of the stationary induction electric device.
Implementation Method 1
A stationary induction electric device such as a transformer and a reactor has an iron core composed with a magnetic body
Data Source
AI summary
The invention is directed to a stationary induction electric device that can reduce loss. To this end, the stationary induction electric device is provided with a first iron core block erected and formed in an annular shape, a second iron core block configured to surround the outer periphery of the first iron core block, a winding wound around the first and the second iron core blocks, a first support plate supporting the upper portion of the first iron core block from below, and a second support plate supporting the upper portion of the second iron core block from below, and a curvature radius of a curved portion appearing on the outer periphery of the lower portion of the second iron core block is made larger than a curvature radius of a curved portion appearing on the outer periphery of the upper portion of the second iron core block.