SolarEdge Technologies has patented a distributed power system with multiple DC power sources and power modules controlled by an inverter. The protection method shuts down power modules when the inverter stops production. The method involves adjusting duty cycles using pulse width modulation to maintain maximum power output. GlobalData’s report on SolarEdge Technologies gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on SolarEdge Technologies, Smart energy mgmt systems was a key innovation area identified from patents. SolarEdge Technologies's grant share as of January 2024 was 47%. Grant share is based on the ratio of number of grants to total number of patents.

Distributed power system with protection method

Source: United States Patent and Trademark Office (USPTO). Credit: SolarEdge Technologies Inc

A recently granted patent (Publication Number: US11888387B2) discloses a method and apparatus for efficiently controlling power converters in response to communication signals. The method involves receiving power from a DC source, adjusting the power converter's duty cycle using pulse width modulation, limiting the output voltage below a set level in the absence of a communication signal, and transitioning to maximum power point tracking upon detecting the signal. The apparatus includes a power converter with a controller equipped with a digital pulse width modulator to manage the converter's duty cycle, ensuring optimal power output while maintaining voltage levels within specified limits. The system is designed to operate with solar cells and includes features like iterative voltage control processes and power line communication for effective power management.

Furthermore, the patent details various aspects of the method and apparatus, such as detecting communication signals from inverters, utilizing frequency shift keying modulation for signals, and ceasing power output in response to signal changes. The apparatus includes input and output terminals controlled by a digital pulse width modulator-equipped controller, ensuring efficient power conversion and management. The method also addresses scenarios like islanding conditions and changes in voltage, current, or power levels, providing a comprehensive approach to power control in DC systems. With a focus on maintaining maximum power efficiency and voltage regulation, the patented technology offers a sophisticated solution for optimizing power conversion processes in solar energy systems, emphasizing the importance of communication signals in enhancing overall system performance and reliability.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.