NEXTracker’s newest solar tracker control system self-adjusts in real time

NEXTracker is launching a new, intelligent self-adjusting tracker control system for solar power plants that it’s calling TrueCapture. The technology will continuously refine the tracking algorithm of each individual solar array in response to existing site and weather conditions. Typically delivering 2-6 percent energy gains, TrueCapture enables system owners and developers to maximize solar system performance and enhance profits for solar power facilities.

How it works

California grower solar

Solar power plants suffer energy production losses from construction variability, terrain undulation and changing weather. TrueCapture will simultaneously solve these factors, leveraging forecast-based tracking behavior algorithms for clouds, fog or haze and row-to-row (R2R) hybrid closed-loop self-learning that course corrects the panel direction to minimize production loss due to shading and clouds. Wireless self-powered controllers on the tracker sync with the smart panels and the NEXTracker SCADA (supervisory control and data acquisition) system, connected through Flex’s IoT platform, a secure, NERC-CIP compliant, industrial-strength connected intelligence platform. From the Flex IoT platform, communication is continually dispatched to control each independent row.

With TrueCapture, proprietary smart panel sensors provide real-time shading information on each tracker row. The data is integrated with design parameters and processed by machine-learning software to build a virtual 3D model of the job site. An intelligent control engine combines the model with the latest meteorological forecast data to calculate and send updated and optimized tracking commands to every independent row. As a result, energy production gets a significant boost. With more production, solar power plants are worth more, adding value for project developers and the long-term owners who will typically operate a facility for up to 30 years.

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