MUMBAI, India, Feb. 6 -- Intellectual Property India has published a patent application (202511133035 A) filed by Indian Institute Of Technology, Jodhpur, Rajasthan, on Dec. 29, 2025, for 'a data-driven digital twin framework for a single-stage three-phase grid-connected photovoltaic inverter system and method thereof.'
Inventor(s) include Rituvic Pandey; and Nishant Kumar.
The application for the patent was published on Feb. 6, under issue no. 06/2026.
According to the abstract released by the Intellectual Property India: "The invention presents a data-driven Digital Twin framework for single-stage three-phase grid-connected photovoltaic inverters, enabling real-time reconstruction of switching-level responses and internal electrical states from operational measurements. The system integrates a Noise-Shaped DC-Elimination (NS-DCE) filter to extract clean fundamental components under harmonics, imbalance, and DC offset, and an Analytic Frequency-Controlled Current Tracking (AFCTC) method to emulate accurate current-regulation behavior under dynamic grid conditions. Internal states-including inductor currents, capacitor voltages, and switching-node dynamics-are estimated using an Echo State Network Surrogate (ESN) trained on nonlinear temporal relationships. These states support continuous parameter estimation of ageing-sensitive components such as inductance, capacitance, ESR, and switching resistance. A Remaining Useful Health (RUH) formulation evaluates degradation trends and operational margins relative to performance thresholds. Experimental validation confirms high fidelity and reliable degradation tracking, establishing a robust, scalable solution for predictive maintenance and long-term PV system reliability."
Disclaimer: Curated by HT Syndication.
