WLS-7-LM

Next-Gen Autonomous Solar O&M Robot

Maximize your solar asset’s performance with the WLS-7-LM, an industry-leading intelligent robot engineered for utility-scale photovoltaic (PV) power stations. By combining dual-mode autonomous navigation with integrated AI thermal inspection, the WLS-7-LM reduces Soiling Loss (SL) and drives down the Levelized Cost of Electricity (LCOE) for global asset managers.

Key Performance Highlights

Cleaning Efficiency: ≥12,000㎡/h with a 95% comprehensive cleaning rate.
All-Terrain Adaptability: Masters complex topographies with a ≥10cm obstacle-crossing and ≥10° climbing capacity.
Unmatched Endurance:≥24h continuous operation via high-density LiFePO4 battery and efficient diesel hybrid power.
Precision O&M: Real-time Digital Twin visualization and automated inspection reports.

Core Features & Smart Technologies

1. Intelligent Autonomous Navigation (Driverless O&M)

Equipped with advanced AI-driven path planning, the WLS-7-LM supports both manual remote control and Level 4 Autonomous operation. It eliminates human error and labor costs, making it the ideal choice for massive desert or mountain-based solar farms.

2. Eco-Friendly Waterless Cleaning (Dry Brush Tech)

Optimized for arid regions, the double-row contra-rotating roller brushes utilize high-frequency mechanical action to remove dust and “sticky” pollutants without a drop of water. This Waterless Solar Cleaning technology protects the glass surface while meeting strict ESG sustainability standards.

3. Integrated Thermal & Visual Inspection

More than just a cleaner—it’s a scout. Featuring Dual-Vision Cameras (Visible Light + Infrared), the robot identifies Hot Spots, cracks, and abnormal surface conditions (down to 10mm*10mm, generating intelligent O&M inspection reports to prevent yield loss.

4. Adaptive Structure for Complex Arrays

The robot’s posture adjusts independently to accommodate varying panel heights (0.1m – 1.4m) and tilt angles (25° – 41°). Whether your plant is ground-mounted or trackers-based, the WLS-7-LM ensures seamless cross-row cleaning.

Technical Specifications

Tractor parameter	Working driving speed	≥60m/min
	Single machine weight	2.3t
	Obstacle-crossing ability	≥10cm
	Climbing ability	≥10°
	Operation endurance (full fuel, full battery)	≥24h
	Clean area	≥12000㎡/h
	Comprehensive cleaning efficiency	≥95%
	Operating temperature	-20℃～+60℃
	Operation mode	Remote control mode, driverless mode
	Fault detection size	10mm×10mm (visible light camera)
	Fault detection size	30mm×30mm (Infrared camera)
	Adaptive adjustment range	Height: 0.3-1.4m / Tilt:25°-41°
	Adaptive adjustment range	Height:0.1-0.55m / Tilt:33°-40°
Generator	Power	5.5kW diesel generator, rated voltage 48V
	Power	Single-cylinder, four-stroke, forced air cooling
	Switch	Line control/key start/stop
	Capacity	40L split-type large-capacity fuel tank
	External dimensions	700mm500mm580mm
	Weight	100kg
Battery	Material	Lithium iron phosphate battery
	Nominal voltage	51.2 V
	Capacity	300Ah
	Working temperature	-30℃ to +70℃
	Size	810 mm * 400 mm * 391.2 mm
	Weight	120kg

Why Choose WLS-7-LM for Your Solar Portfolio?

Boost ROI: Directly improves the Soiling Ratio (SR) and increases annual energy yield by up to 25%.
Predictive Maintenance: Shift from reactive fixes to Condition-Based Maintenance with real-time data feedback.
Safety First: Reduces on-site personnel risk in hazardous or remote terrains.

Frequently Asked Questions (FAQ) – WLS-7-LM O&M Solutions

Q1: How does the WLS-7-LM help in reducing the Levelized Cost of Electricity (LCOE)?
A: The WLS-7-LM directly impacts LCOE by maximizing energy yield and minimizing operational expenditure. With its ≥12,000 m²/h cleaning efficiency and integrated AI defect detection, it prevents power loss from soiling and identifies thermal anomalies before they lead to costly panel failures. This high-frequency, low-cost maintenance ensures a faster ROI for utility-scale solar investments.

Q2: Is the robot suitable for desert environments with water scarcity?
A: Absolutely. The WLS-7-LM features specialized Waterless Cleaning Technology using double-row contra-rotating brushes. This dry-cleaning method is engineered for arid regions (like the MENA region or SW United States), effectively removing fine dust and sand without consuming precious water resources, aligning with global ESG (Environmental, Social, and Governance) sustainability goals.

Q3: Can the WLS-7-LM operate on uneven terrain or complex solar arrays?
A: Yes. Designed for all-terrain adaptability, the robot features a robust crawler system capable of crossing obstacles up to 10cm and climbing slopes of ≥10°. Its Adaptive Posture Adjustment system allows it to handle PV panels at various heights (0.1m to 1.4m) and tilt angles (25°-41°), ensuring seamless cross-row operation in mountain or tracker-based power plants.

Q4: How does the AI-driven inspection system work?
A: The robot is equipped with Dual-Vision Sensors (Visible + Infrared/Thermal). As it cleans, the AI algorithm scans for micro-cracks, hot spots (≥30mm* 30mm, and surface abnormalities. It generates an Intelligent O&M Report automatically, allowing asset managers to switch from reactive to Predictive Maintenance strategies.

Q5: What are the safety features for autonomous (unmanned) driving?
A: Safety is our priority. The WLS-7-LM utilizes Multi-Sensor Fusion (LiDAR/Ultrasonic) for real-time perception of pressure, angle, and centering distance. In Autonomous Mode, it maintains precision alignment with the panel edges and includes emergency stop protocols to protect the PV modules and the robot itself.

Q6: What is the endurance and power source of the robot?
A: The robot is powered by a high-capacity LiFePO4 (Lithium Iron Phosphate) battery paired with a 5.5kW hybrid diesel generator. This combination supports ≥24 hours of continuous operation, making it perfect for intensive cleaning cycles during peak soiling seasons.