MUMBAI, India, Jan. 23 -- Intellectual Property India has published a patent application (202531133711 A) filed by Kalinga Institute Of Industrial Technology, Bhubaneswar, Orissa, on Dec. 30, 2025, for 'analysis of pi based controller in grid connected pv systems under fault.'
Inventor(s) include Swain, Sarat Chandra; Bhatta, Sunil Kumar; Mahala, Biranchi Kumar; and Mishra, Sanhita.
The application for the patent was published on Jan. 23, under issue no. 04/2026.
According to the abstract released by the Intellectual Property India: "The present invention provides a system for adaptive resource allocation in grid-connected photovoltaic systems comprises a photovoltaic array (102) connected to a DC-DC converter (104), a maximum power point tracking module (106) implementing a perturb and observe algorithm, and a Fuzzy-PI controller (108) configured to dynamically adjust control gains based on error signals and derivative error signals. The system further includes a DC-link voltage monitoring circuit (110), a DC-link capacitor (112), an inverter (114) for converting DC power to AC power, a phase-locked loop circuit (116) for grid synchronization, a fault detection module (120) for detecting line-to-ground faults, and a harmonic analysis module (122) for measuring total harmonic distortion. The Fuzzy-PI controller (108) implements fuzzy logic inference to generate adaptive control responses during fault conditions, maintaining DC-link voltage stability and ensuring compliance with IEEE 1547 and IEEE 519 standards while achieving improved steady-state accuracy and reduced response times."
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