Welding Inductor L-T Core Energy Storage
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Solution Overview
Problem
Existing inductor designs for welding applications are inadequate for maintaining welding arcs with XX10 electrodes, as they fail to provide sufficient energy storage to prevent arc extinction due to high voltage spikes and lower bus voltage levels.
Innovation Solution
A specifically designed inductor with an L-shaped and T-shaped core configuration, including spacers and combs to house a winding, providing an inductance of approximately 700 mH to store energy and maintain arcs with XX10 electrodes, while accommodating XX18 electrodes without compromising performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If existing inductor designs are used, then device complexity is reduced, but energy storage capacity is insufficient to maintain welding arcs with XX10 electrodes
Solution Approach 1:
The inductor core is divided into multiple segments (first core segment, second core segment, third core segment) arranged in a specific geometric configuration. This segmentation allows achieving the required 700 mH inductance and energy storage capacity while maintaining a compact structure that doesn't excessively increase device complexity.
Solution Approach 2:
The winding is disposed between the core segments in a nested arrangement, with the winding positioned in the spaces between the L-shaped and T-shaped core elements. This nesting approach maximizes the use of available space within the inductor structure, achieving high energy storage capacity without proportionally increasing the overall device volume and complexity.
2Reliability
If inductance is increased to 700 mH to maintain arcs with XX10 electrodes, then arc stability improves, but inductor size and weight increase
Solution Approach 1:
The core employs an asymmetric geometric configuration with L-shaped and T-shaped core segments rather than a symmetric design. This asymmetric arrangement optimizes the magnetic flux path for the specific welding application, achieving the required 700 mH inductance and arc stability with minimized core material usage and reduced inductor weight.
Solution Approach 2:
Different core segments are positioned to create localized magnetic field distributions optimized for energy storage. The L-shaped and T-shaped segments create specific magnetic flux paths that concentrate the magnetic field where needed for maintaining welding arcs, achieving high reliability without requiring uniform increases in overall inductor size and weight.
3Duration of action of stationary object
If inductance is increased to counteract high voltage spikes, then arc continuity improves, but manufacturing complexity increases
Solution Approach 1:
The core is segmented into discrete L-shaped and T-shaped elements that can be manufactured separately and then assembled. This segmentation simplifies the manufacturing process for each individual core segment while achieving the required 700 mH inductance for arc continuity through the combined configuration, reducing overall manufacturing complexity compared to a monolithic core design.
Solution Approach 2:
Multiple core segments and the winding are combined in a specific configuration where the winding is disposed between the L-shaped and T-shaped core segments. This merging of components achieves the required inductance for arc continuity while allowing each component to be manufactured using standard processes, balancing arc continuity requirements with manufacturing ease.
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 inductor design effectively maintains welding arcs with XX10 electrodes by storing sufficient energy to counteract high voltage spikes and lower bus voltage levels, enhancing welding performance and preventing arc extinction.
Implementation Method 1
an inductor for a welding power supply includes an L shaped core element and a T shaped core element... A winding is disposed in the combs and spaced from the core elements. The inductor has an inductance sufficient to store energy to maintain an arc
Data Source
AI summary
A welding system includes an inductor on an output of a welding power supply. The power supply may be of the type including an engine and a generator for producing power, with power conversion circuitry conditioning the power to a form suitable for a stick welding application. The inductor has an inductance sufficient for storing energy for maintaining a welding arc with XX10 electrodes, such as on the order of 700 mH. The inductor may have a particular structure, such as one designed around T and L shaped core elements.