Arc Starting Circuit Using Multi-Transformer Pulse Boosting

Solution Overview

Problem

Conventional arc starting/stabilizing circuitry for welding systems is costly and complex to manufacture due to the use of transformers that require intricate winding processes and active cooling, leading to significant power losses.

Innovation Solution

The implementation of multiple 1:1 transformers with parallel primary windings and series secondary windings, coupled with a pulse generator, reduces complexity and cost by simplifying the manufacturing process and minimizing power losses, while maintaining efficient arc starting and stabilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional transformers with intricate winding processes are used in arc starting/stabilizing circuitry, then the arc starting and stabilization function is achieved, but the manufacturing complexity and cost increase significantly

Engineering Contradiction:

Improvearc starting and stabilizationVSAvoidmanufacturing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent divides the transformer into multiple separate 1:1 transformers instead of using a single complex transformer with intricate windings. Each transformer has a simple single-turn primary and single-turn secondary configuration, making them easier to manufacture individually while collectively achieving the same arc starting and stabilization function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses multiple identical simple transformer units (1:1 transformers with single-turn windings) instead of one complex transformer. By replicating the simple transformer design multiple times and connecting them in a specific configuration, the system achieves the required performance while simplifying the manufacturing process for each individual unit.

Inventive Principle:

Principle #26Copying

2Reliability

If conventional transformers with intricate winding processes are used in arc starting/stabilizing circuitry, then the arc starting and stabilization function is achieved, but the manufacturing cost increases significantly

Engineering Contradiction:

Improvearc starting and stabilizationVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent divides the transformer into multiple separate 1:1 transformers instead of using a single complex transformer with intricate windings. Each transformer has a simple single-turn primary and single-turn secondary configuration, making them easier to manufacture individually while collectively achieving the same arc starting and stabilization function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses multiple identical simple transformer units (1:1 transformers with single-turn windings) instead of one complex transformer. By replicating the simple transformer design multiple times and connecting them in a specific configuration, the system achieves the required performance while simplifying the manufacturing process for each individual unit.

Inventive Principle:

Principle #26Copying

3Reliability

If conventional transformers are used in arc starting/stabilizing circuitry, then the arc starting and stabilization function is achieved, but power losses increase significantly

Engineering Contradiction:

Improvearc starting and stabilizationVSAvoidpower losses

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent extracts the essential function of voltage transformation from a single complex transformer and distributes it across multiple simple 1:1 transformers. By using multiple transformers with fewer turns each, the patent reduces copper losses and core losses that are present in conventional single-transformer designs, thereby reducing overall power losses while maintaining the arc starting and stabilization function.

Inventive Principle:

Principle #2Taking out (Extraction)

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 results in a more efficient and cost-effective arc starting/stabilizing circuitry with reduced manufacturing complexity and power losses, enabling stable welding arcs without the need for active cooling.

Implementation Method 1

circuits may be configured to output high voltage, high frequency pulses to the weld circuit to enable arc striking

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

welding arcs without the need for contacting a tungsten electrode to the workpiece

Methodology Applied

Scientific EffectElectric arc: Electric Arc

Data Source

PatentUS12447546B2Systems and methods to provide welding-type arc starting and stabilization

Publication Date: 2025.10.21 ILLINOIS TOOL WORKS INC

AI summary

An example arc starting/stabilizing circuit includes: a pulse generator configured to generate voltage pulses having a first voltage; and a plurality of transformers configured to receive the voltage pulses and output the voltage pulses to a welding-type output circuit at a second voltage higher than the first voltage, wherein: each of the plurality of transformers comprises one primary winding turn, one secondary winding turn, and a core configured to magnetically couple the primary winding turn and the secondary winding turn; the primary winding turns of the plurality of transformers are coupled to the pulse generator to receive the voltage pulses; and the secondary winding turns of the plurality of transformers are coupled in series and are configured to conduct welding-type current in the welding-type output circuit.