Solutions

Kolchar Product Line

Kolchar-GF series

The Kolchar-GF series are designed and optimized for ground-fixed solar power plants. Kolchar-GF features water-free cleaning, self-powered, remote control and monitoring, data management, smart weather-aware operations, and so on.

Different solar power plant operators may have varying O&M requirements, primarily influenced by differences in power station layout and implementation. The Kolchar-GF robot is specifically designed to meet the needs of most ground-fixed installations across various solar power plants. Its versatility allows for flexible customization to accommodate the specific requirements of individual customers.

Kolchar-TR series

The Kolchar TR features autonomous and smart operation, superior capability to handle misalignments, long endurance, easy maintenance, reliability, multiple safety measures, and compatible with mainstream trackers from different manufacturers. With our engineering and design expertise, the Kolchar TR robots can reliably handle:

Height difference between two trackers: ±50mm
Angular difference between two trackers: ±5°
Horizontal misalignment: ±50mm
Obstacles such as BHAs, slew gear, and antenna
Gaps between two adjacent panels or two trackers (with the help of dynamic bridges)

Newly launched Kolchar-SP series

The Kolchar SP series of portable PV panel cleaning robots offers unparalleled flexibility for adapting to various solar site layouts and configurations, providing efficient and effective PV panel cleaning. This series consists of two models:

Kolchar SPI:

Lightweight and Portable: Each robot weighs just 6.2 kg, allowing easy transport to hard-to-reach areas.
Versatile Capabilities: Operates at inclination angles up to 45 degrees and in temperatures ranging from -20°C to 50°C, including nighttime operations.
Autonomous Operation: Independently navigates and cleans solar tables after a simple start button press, enabling one staff member to operate multiple robots simultaneously, optimizing efficiency and reducing manpower.
Universal Application: Suitable for all types of terrains, plant layouts, and panel configurations, including rooftops, tracker projects, and areas where dust needs to be vacuumed instead of brushed away.

Kolchar SPE

Enhanced Cleaning Efficiency: Delivers high cleaning speed and efficiency, capable of covering up to 1,000 m2 per hour.
Dual Cleaning Modes: Supports both dry and wet cleaning, with options for pressure washing PV panels or using specialized solutions to remove stubborn pollutants.
User-Friendly Operation: Features remote control with auto-cruising, anti-slip, and fall-prevention mechanisms. AI-based autonomous path correction ensures stability, safety, and ease of use.
Modular Design: Facilitates quick assembly of brushes, water sprayers, and other components for easy portability and maintenance.
Versatile Application: Suitable for cleaning panels with inclination angles up to 25 degrees and in temperatures from -10°C to 45°C. Ideal for floating projects, rooftop installations, tracker projects, and ground-fixed installations.

System Advantage

Field Tests and Certifications

Field Tests

Kolchar Robots have passed various rigorous tests for assessing the reliability of the robots and the impacts of robotic cleaning on PV modules, and received certificates from TUV, Bureau Veritas, and so on.

A field test was conducted at one of the solar power plants operated by China General Nuclear Power Group (CGN) to evaluate the efficacy of our robotic PV panel cleaning solution. The test focused on daily panel cleaning using our robot.

The results of both daily and statistical field tests consistently demonstrated that power generation significantly improved with the implementation of robotic cleaning. The overall increase in power generation was observed, and separate calculations were made to assess the effectiveness of robotic cleaning under different weather conditions, such as sunny/cloudy or overcast/rainy.

During the field test, our robot effectively cleaned the PV modules, leading to a remarkable improvement in power generation of approximately 5% in the soling condition at the CGN solar power plant. The results were highly satisfactory, affirming the robot’s efficiency and effectiveness in enhancing power generation.

TUV certification

Kolchar cleaning robot has successfully undergone TUV accelerated tests, which evaluated both the robot’s reliability and the effects of robotic cleaning on PV modules.

The robot demonstrated consistent and effective cleaning performance throughout the tests. Following a simulated 25 years of cleaning operations, thorough visual inspections revealed no defects on the PV modules.

To assess the impact on power generation, I-V characteristic measurements were conducted, indicating an average power degradation of only 0.249%. Furthermore, the testing encompassed PV modules with and without pre-existing microcracks. Remarkably, in both cases, no new microcracks or any other defects were observed from the EL-images, highlighting the robot’s non-intrusive and safe cleaning process. These results affirm the reliability of our cleaning robot and its ability to maintain the integrity and performance of PV modules over an extended period of time.