MUMBAI, India, Oct. 5 -- Intellectual Property India has published a patent application (202641112987 A) filed by Vardhaman College Of Engineering on September 21, 2026, for Real-Time Harmonic Distortion Suppression Circuit For Grid-Connected Inverter Systems.
Inventors include Puligilla Swetha; G. Indira Rani; A Ananda Kumar; B Raja Gopal Reddy; Mohan Bukya; and Niveditha Sivadanam.
The application for the patent was published on October 02, 2026, under issue no. 40/2026.
Abstract: Real-Time Harmonic Distortion Suppression Circuit for Grid-Connected Inverter Systems is the proposed invention. The present invention relates to a real-time harmonic distortion suppression circuit for grid-connected inverter systems and is particularly applicable to renewable-energy converters, battery energy-storage systems, electric-vehicle charging systems, and distributed power-generation applications. The proposed circuit continuously acquires grid voltage, inverter current and grid-current signals through a sensing and signal-conditioning interface, and processes the acquired signals with a grid synchronization and harmonic extraction unit. A synchronous-reference-frame processing stage extracts unwanted harmonic components from the measured current waveform and an adaptive compensation-reference generator generates the corresponding corrective current references. The compensation commands are obtained by an adaptive resonant current controller from the difference between the measured and the desired current components. The output of the controller is converted into switching signals for an active compensation converter by a pulse-width-modulation unit. This converter injects a compensating current with a proper phasing at the grid interface, so as to reduce the harmonic components. The residual distortion is continuously monitored in a closed loop feedback and the compensating parameters are dynamically adjusted depending on the inverter loading and the grid operating conditions. The invention therefore provides adaptive real time harmonic mitigation, improved grid current waveform quality, reduced distortion and enhanced power quality performance without relying solely on fixed passive filtering networks.
Disclaimer: Curated by HT Syndication.
