Hybrid Engine Welding Power Supply with Battery Supplement
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Solution Overview
Problem
Conventional engine-driven welding power sources require oversized prime movers to prevent stalling, leading to inefficiencies and increased costs due to the need for maximum power capacity at all times, regardless of continuous rating demands.
Innovation Solution
The implementation of a hybrid engine-driven welding power supply system that includes a primary energy generation system and a secondary energy generation system, with an energy storage medium and a controller to provide supplemental mechanical power, allowing for prime mover-inhibited operation and improved dynamic response, enabling higher peak energy delivery and reduced wear on the primary system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the prime mover is sized to meet the maximum demand independently, then the power capacity is sufficient to prevent stall, but the system efficiency decreases and costs increase due to oversized operation during continuous rating demands
Solution Approach 1:
The power generation system is segmented into a primary prime mover and a secondary energy storage medium (battery). The prime mover handles continuous rating demands while the battery provides supplemental power during peak demands, allowing each component to operate in its optimal efficiency range rather than requiring the prime mover to be oversized for maximum demand.
Solution Approach 2:
The system dynamically switches between different power sources based on demand levels. The controller activates the secondary energy storage medium only when peak power is needed, creating a dynamic hybrid system that adapts to varying load conditions rather than operating in a static oversized configuration.
2Reliability
If the prime mover is sized to meet the maximum demand independently, then the power capacity is sufficient to prevent stall, but the device complexity and cost increase due to oversized prime mover requirements
Solution Approach 1:
The system divides the power generation function between a smaller prime mover (sized for continuous rating) and a secondary energy storage medium. This segmentation allows the prime mover to be smaller and less complex while the battery compensates for peak power requirements, reducing overall system complexity.
Solution Approach 2:
The secondary energy storage medium acts as an intermediary between the prime mover and the load. It buffers the differences between continuous and peak demands, allowing the prime mover to be simpler in design while maintaining the ability to meet maximum demand through coordinated operation.
3Power
If supplemental mechanical power is provided by the secondary energy generation system, then the peak energy delivery and dynamic response are improved, but the device complexity increases due to hybrid system configuration
Solution Approach 1:
The secondary energy storage medium serves multiple functions: providing supplemental power during peaks, storing excess energy during low demand, and enabling prime mover-inhibited operation. This multi-functionality justifies the added complexity by delivering significant performance benefits in peak power and dynamic response.
Solution Approach 2:
The controller continuously monitors system conditions and dynamically manages power flow between the prime mover, secondary energy storage medium, and load. This feedback control optimizes the hybrid configuration's performance while managing its complexity through intelligent coordination rather than simple parallel operation.
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 hybrid system enhances the dynamic response and peak energy delivery capabilities of welding power supplies, improves cold weather starting, and reduces wear and fuel consumption by providing supplemental mechanical power, allowing for more efficient operation and extended run times.
Implementation Method 1
a battery pack and a controller. The hybrid system can improve dynamic response and enable prime mover-inhibited operation
Implementation Method 2
The hybrid system includes a primary energy generation system comprising an internal combustion engine configured to generate mechanical power, a generator configured to convert the mechanical power from the internal combustion engine to electric power
Data Source
AI summary
Methods and systems for engine-driven welding-type power supplies with secondary energy generation are disclosed. An example engine-driven welding-type power supply includes a primary energy generation system comprising an internal combustion engine configured to generate mechanical power, a generator configured to convert the mechanical power from the internal combustion engine to electric power, a welding-type power conditioning circuit to convert the electric power to welding-type power, and a secondary energy generation system configured to supplement the mechanical power output by the internal combustion engine.