MUMBAI, India, Jan. 2 -- Intellectual Property India has published a patent application (202541123199 A) filed by Chaitanya Bharathi Institute Of Technology, Hyderabad, Telangana, on Dec. 6, 2025, for 'a system and method for power quality enhancement and energy management in a hybrid standalone pv-wind-battery microgrid.'
Inventor(s) include Dr. T. Murali Krishna; Dr. K. Krishnaveni; Dr. G. Suresh Babu; Dr. N. Vasantha Gowri; Dr. Cholleti Harish; and Mr. Srinu Bhukya.
The application for the patent was published on Jan. 2, under issue no. 01/2026.
According to the abstract released by the Intellectual Property India: "Standalone renewable energy microgrids used in rural and remote electrification frequently experience voltage instability, power imbalance, and poor power quality due to intermittent solar irradiance, fluctuating wind speeds typically ranging from 2 m/s to 12 m/s, and rapidly varying load demands between 2 kW and 25 kW, while battery-only storage systems suffer from excessive cycling, limited transient response, and inefficient use of surplus renewable energy, leading to DC-link voltage deviations exceeding 8%, unbalanced three-phase voltages at the point of common coupling (PCC) beyond 5% limits, and increased voltage harmonic distortion above the recommended 5% THD threshold. The present invention discloses a hybrid standalone microgrid system and coordinated energy management method integrating photovoltaic units rated from 5 kW to 20 kW, wind energy conversion systems rated from 3 kW to 15 kW, a battery energy storage system of 10 kWh to 50 kWh capacity, a fuel cell unit rated between 3 kW and 10 kW, and an electrolyzer for hydrogen production, all interconnected via a regulated DC-link maintained between approximately 700 V and 750 V supplying a three-phase voltage-source inverter delivering balanced AC power of 220-240 V (line-to-neutral) or 380-415 V (line-to-line) to local loads. A centralized controller continuously monitors renewable generation, load demand, DC-link voltage, inverter conditions, and battery state-of-charge maintained between 20% and 80%, enabling rapid battery-based transient compensation, routing surplus renewable power to hydrogen production via the electrolyzer, and activating the fuel cell for deficit power support to reduce battery stress. Concurrent inverter modulation maintains PCC voltage regulation within 5% and limits harmonic distortion to below 5% THD, even under unbalanced loading conditions, thereby achieving stable voltage operation, improved power quality, optimized renewable energy utilization, extended storage longevity, and reliable grid-independent power supply for remote applications."
Disclaimer: Curated by HT Syndication.
