Welding Power Engine Auto Start-Stop Using Load Signal Feedback
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Solution Overview
Problem
Conventional welding-type power supplies continue to operate and waste fuel when no power is being drawn, leading to increased wear and environmental emissions, as they require manual activation and deactivation, which can be inconvenient and result in missed steps or lost productivity.
Innovation Solution
A welding-type power system that includes a sensor to monitor power signals and a controller to automatically start or stop the engine based on changes in the power signal, distinguishing between welding and battery charging modes, and adjusting engine speed accordingly, allowing for automatic response to load presence or absence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the engine operates continuously to ensure immediate power availability, then power readiness is improved, but fuel consumption increases and engine wear increases
Solution Approach 1:
The system automatically monitors its own power signal outputs and self-regulates engine operation without external intervention. The controller detects when power is being drawn and automatically starts or continues engine operation, and when no power is drawn, it stops the engine, making the system self-managing and eliminating the need for continuous operation.
Solution Approach 2:
The system uses feedback from sensors monitoring power signals at system outputs to control engine operation. The controller receives real-time information about power consumption and adjusts engine state accordingly, creating a closed-loop control system that responds to actual power demands rather than operating continuously.
2Loss of energy
If the engine is manually activated and deactivated, then fuel consumption is reduced, but operator convenience deteriorates and productivity decreases
Solution Approach 1:
The system performs the start/stop operations automatically based on its own operational state, eliminating the need for manual operator intervention. The self-service capability maintains energy efficiency while removing the productivity penalty associated with manual activation and deactivation steps.
3Reliability
If the engine operates continuously to prevent missed activation steps, then operational reliability is improved, but environmental emissions increase
Solution Approach 1:
The feedback mechanism ensures operational reliability by automatically detecting when power is needed and activating the engine accordingly, eliminating missed steps while avoiding unnecessary operation. The system only emits when actually required to provide power, significantly reducing environmental impact compared to continuous operation.
4Loss of energy
If the system automatically starts and stops based on power signal monitoring, then fuel consumption is reduced, but system complexity increases
Solution Approach 1:
The controller performs multiple functions: it monitors power signals, determines changes in power consumption, identifies different modes of operation (welding vs. battery charging), and controls engine start/stop and speed adjustment. This multi-functionality consolidates what could be separate systems into a single integrated controller, managing complexity rather than increasing it.
Data Source
AI summary
Apparatus and methods are provided for a welding-type power system that includes an engine configured to drive an electric generator to provide power to a power output, wherein a power signal is applied to the power output. A sensor monitors the power signal, and a controller determines a change in the power signal based on a feedback signal received from the sensor, and controls the engine to start or stop operation in response to the change in the power signal.