Solar Panel Automated Cleaning System with Position-Sensing Applicator
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Solution Overview
Problem
Conventional methods for cleaning ground-mounted solar panels are inefficient, costly, and difficult to use, leading to reduced energy production due to soiling, especially in desert environments with limited rain, resulting in power production losses of up to 20%.
Innovation Solution
An automated system with an applicator apparatus and automatic position system (APS) equipped with sensors and a mobile vehicle that navigates between solar panels using proximity and GPS sensors, ensuring effective cleaning with minimal water and labor requirements, and includes a filtration system to recycle cleaning fluid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional manual cleaning methods are used for solar panels, then cleaning can be performed, but water consumption and labor requirements are excessive
Solution Approach 1:
The solar panel cleaning system enables the panels to clean themselves through an automated apparatus that applies cleaning solution and uses acoustic vibration to remove soil without requiring manual intervention. The system self-regulates the cleaning process by detecting panel soiling levels and adjusting cleaning intensity accordingly, eliminating the need for human labor while reducing water consumption through targeted application.
Solution Approach 2:
The cleaning system changes the physical state and properties of cleaning parameters by using acoustic vibration at specific frequencies to loosen soil particles, then applying cleaning solution in controlled amounts. The system dynamically adjusts water flow rate, cleaning solution concentration, and vibration intensity based on real-time sensor feedback about panel condition, optimizing water usage while maintaining effective cleaning.
2Productivity
If solar panels are not cleaned regularly, then water and labor are saved, but energy production is significantly reduced due to soiling
Solution Approach 1:
The system replaces manual mechanical cleaning operations with an automated apparatus that uses acoustic vibration fields and controlled fluid delivery. Sensors detect soil accumulation on panel surfaces and trigger automated cleaning sequences, eliminating the need for human workers to manually scrub or rinse panels while ensuring consistent cleaning performance that maximizes energy production.
Solution Approach 2:
The cleaning system incorporates sensors that continuously monitor panel soiling levels, water flow rates, and cleaning effectiveness. This feedback is processed by a control system that automatically adjusts cleaning parameters and schedules future cleaning operations, ensuring panels are cleaned only when necessary to maintain optimal energy production while minimizing water and labor consumption.
3Productivity
If high-pressure water spraying is used to clean solar panels, then cleaning effectiveness is improved, but the risk of panel damage increases
Solution Approach 1:
The cleaning system uses acoustic vibration at resonant frequencies to loosen and remove soil particles from panel surfaces before applying minimal water. The vibration creates micro-movements that break the adhesion between soil and panel glass, allowing effective cleaning at very low water pressures that cannot damage the panel structure or coating.
Solution Approach 2:
The system introduces acoustic vibration as an intermediary mechanism between the cleaning goal and the panel surface, rather than applying force directly through high-pressure water. The vibration field acts as a mediator that prepares the surface for gentle cleaning, enabling soil removal through a third mechanism that protects the panel from direct mechanical or hydraulic stress.
Data Source
AI summary
A method and system for cleaning an array of solar panels. The system can include an applicator apparatus configured with a plurality of cleaning devices, and an automatic position system (APS) configured with the applicator apparatus. The APS can include a first and second sensor coupled to the applicator apparatus. A controller coupled to the first and second sensor devices can be configured to adjust a position of the applicator apparatus to maintain the plurality of cleaning devices in a direction facing a solar panel to facilitate a removal of an undesired material from the solar panel, while the applicator apparatus is moved from a first position to a second position. A mobile vehicle can be configured with the applicator apparatus to move along a row of the array of solar panels to perform the method for cleaning.