Segmented Winding Iron Core for Stationary Induction Apparatus
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Solution Overview
Problem
Existing stationary induction electric apparatuses with large capacities face challenges in maximizing space factor and minimizing material usage due to the complexity of support structures required for circular iron cores, which increases the size of the window and material usage.
Innovation Solution
A stationary induction electric apparatus with a winding iron core configuration using multiple rectangular cross-section blocks of varying thicknesses arranged in a circular shape, allowing the yokes to be supported on a plane and simplifying the support structure, thereby minimizing the window size and material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a circular iron core is used to improve electromagnetic force resistance, then the electromagnetic force resistance is improved, but the support structure becomes complex and the window size increases
Solution Approach 1:
The circular iron core is segmented into multiple rectangular cross-section blocks arranged in a circular pattern. Each block is an independent unit that can be manufactured and assembled separately, eliminating the need for complex support structures while maintaining the circular configuration's electromagnetic force resistance
Solution Approach 2:
The invention uses rectangular cross-section blocks (asymmetric shape) arranged in a circular pattern rather than using a perfectly circular iron core. This asymmetric approach allows the blocks to be supported on their flat rectangular faces, simplifying the support structure while maintaining the circular outer profile for electromagnetic performance
2Area of moving object
If a circular iron core is used to maximize space factor, then the space factor is improved, but the window size increases and material usage increases
Solution Approach 1:
The iron core is divided into multiple rectangular blocks arranged circularly, allowing optimized positioning that maximizes the active magnetic path area while minimizing the window space required for support structures
Solution Approach 2:
The invention transitions from a two-dimensional circular cross-section to a three-dimensional arrangement of rectangular blocks, where the blocks are stacked and arranged to create a circular profile. This dimensional change allows optimization of both the core area and window size independently
3Shape
If magnetic metal ribbons of various shapes are combined and laminated to form a circular iron core, then the circular cross-section is achieved, but the manufacturing process becomes complex
Solution Approach 1:
Instead of laminating magnetic metal ribbons of various shapes to form a circle, the invention segments the core into standard rectangular cross-section blocks. These uniform blocks are easier to manufacture using conventional winding processes and can be assembled to form the circular configuration, greatly simplifying the manufacturing process
Solution Approach 2:
The invention changes the manufacturing approach from custom-shaped ribbon lamination to standardized rectangular block winding. By changing the geometric parameters of the basic unit to a simple rectangle, the manufacturing process becomes compatible with conventional winding techniques while achieving the desired circular overall shape through arrangement
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 configuration simplifies the support structure for yokes, reduces the window size, and minimizes the dimension and material usage of the iron core, while maintaining improved electromagnetic force resistance and space factor.
Implementation Method 1
an iron core with substantially a circular cross-section is adopted for a stationary induction electric apparatus with a large capacity
Implementation Method 2
a winding is wound in a circular shape to improve the electromagnetic force resistance
Implementation Method 3
an iron core having, at least, two iron core legs and a winding wound around each iron core leg. The iron core is a winding iron core obtained by bending laminated magnetic metal ribbons
Data Source
AI summary
An iron core is configured as a winding iron core block group that is obtained in such a manner that winding iron core blocks having rectangular cross-sections each of which is obtained by laminating magnetic metal ribbons with a predetermined width and which have plural widths and laminated thicknesses are arranged in the width direction of the magnetic metal ribbons. The laminated thickness of the winding iron core block located in the middle of the width direction of the magnetic metal ribbons is larger, and the cross-section of each iron core leg is configured substantially in a circular shape by centering the winding iron core blocks in the laminated direction of the magnetic metal ribbons. Upper and lower yokes are arranged in such a manner that the bottom faces of the winding iron core blocks are aligned, and an in-window support member supports the upper yoke on a plane.