Multi-Transformer Weed Electrocution Circuit for Safer Power Delivery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for controlling plant growth, such as herbicides, face environmental concerns and efficacy issues due to resistance, while electrical weed control devices pose safety risks and interference with electronic equipment, limiting their widespread adoption.
Innovation Solution
An electrical apparatus comprising multiple transformers connected in series or parallel to improve impedance matching, allowing for higher power delivery with reduced parasitic losses and better handling of high-frequency noise, enabling safer and more effective plant growth attenuation using electrical energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high voltage electrical energy is applied to plants to kill or control weed growth, then plant growth control effectiveness is improved, but safety risk to persons in proximity increases
Solution Approach 1:
The electrical energy supply system is divided into multiple lower voltage sources (e.g., multiple 240V AC inputs) instead of using a single high voltage source. Each transformer processes lower voltage input, and the outputs are combined through series or parallel connections to achieve the required high voltage output. This segmentation reduces the safety hazard at any single point in the system while maintaining the effectiveness of plant growth control.
2Reliability
If high voltage electrical apparatus is used for weed control, then plant treatment effectiveness is improved, but interference with nearby electronic equipment increases
Solution Approach 1:
The system uses multiple separate transformer units processing lower voltage inputs, which generates less electromagnetic interference individually compared to a single high voltage system. The segmented architecture allows for better electromagnetic shielding and isolation of each unit, reducing overall interference with nearby electronic equipment while maintaining effective plant treatment.
Solution Approach 2:
The system operates with lower voltage parameters at each transformer stage (e.g., 240V AC input) rather than directly generating high voltage. By changing the operating parameters to lower voltages at intermediate stages and only achieving high voltage at the final output through series/parallel combination, the electromagnetic interference generated during transformation is reduced, allowing certified use in areas with sensitive electronic equipment.
3Power
If a single large transformer is used to deliver high power electrical energy, then power delivery capability is improved, but impedance matching with the plant increases losses
Solution Approach 1:
Instead of using a single large transformer, the system employs multiple smaller transformers (e.g., two or more 240V AC input transformers). These transformers are connected in a specific configuration where their outputs are combined in series or parallel to deliver the required high power. This segmentation improves impedance matching with the plant, reducing energy losses while maintaining high power delivery capability.
4Loss of energy
If multiple transformers are connected in series or parallel, then impedance matching with the plant is improved, but device complexity increases
Solution Approach 1:
The system uses multiple standard-rated transformers with common specifications, which simplifies the connection process despite the increased number of components. The segmentation into identical or similar units allows for standardized connection procedures and easier maintenance.
Solution Approach 2:
The multiple transformer outputs are merged through series or parallel connections to achieve the desired high voltage and current output. This combining approach, while increasing component count, uses straightforward electrical connections that minimize overall system complexity compared to designing a single custom high-voltage transformer with complex internal windings and insulation requirements.
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 apparatus effectively attenuates plant growth by delivering higher power with reduced safety risks and electromagnetic interference, making it suitable for various environments, including areas with sensitive electronic equipment.
Implementation Method 1
The electrical energy supply unit includes a plurality of transformers, each transformer having a low voltage side and a high voltage side. The high voltage side of the transformers implementing the transmission circuit.
Implementation Method 2
The electrical energy has a repeating waveform with a frequency of at least 500 Hz or 1 kHz. When implementing the electrical energy with a repeating waveform that has high frequency, e.g. a frequency of substantially above 50 Hz, in combination with the multiple transformer arrangement
Data Source
AI summary
Electrical apparatus to kill a plant or at least attenuate plant growth, the apparatus comprising: an electrical energy supply unit; a applicator unit comprising an applicator electrode; a return unit comprising a return electrode; the electrical energy supply unit arranged to apply electrical energy through a transmission circuit comprising the applicator electrode, and the return electrode, the electrical energy supply unit including a plurality of transformers, each transformer having a low voltage side and a high voltage side, wherein the high voltage sides of the transformers are electrically connected to implement transmission circuit, and/or the low voltage sides of the transformers are electrically connected.