MUMBAI, India, Jan. 2 -- Intellectual Property India has published a patent application (202541122263 A) filed by G. Narayanamma Institute Of Technology & Science (For Women), Hyderabad, Telangana, on Dec. 5, 2025, for 'retrofitting of induction motor ceiling fan with energy-efficient bldc motor.'
Inventor(s) include Mr. P. Sai Niranjan Kumar; Dr. Ponnuru Ramakrishna Reddy; Dr. Nomula Malla Reddy; Dr. B. Ramesh; Dr. G. Satheesh; Dr. P. Rama Mohan; Mr. S. Chaitanya; Mr. Badri Ramakrishnan; Mrs. PVSSA Parimala; and Dr. Vulichi Pavankumari.
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: "The present disclosure relates to a retrofit system and method for converting a conventional induction-motor ceiling fan into an energy-efficient Brushless DC (BLDC) motor ceiling fan without replacing the external fan structure. The system comprises a three-phase BLDC stator assembly, a permanent-magnet rotor mounted on the existing fan shaft, a controller unit including an AC-DC converter, DC link capacitor, MOSFET inverter bridge, microcontroller, and Hall sensor interface, and a mounting frame configured to align and secure the components within the existing housing. The controller executes electronic commutation, closed-loop speed control, and protection functions to ensure stable operation, reduced noise, and improved performance. A user control interface allows speed regulation and mode selection. The retrofit system decreases power consumption from approximately 70-80 W to 25-35 W while maintaining airflow and torque output. The invention provides a sustainable, low-cost solution enabling efficient modernization of widely used ceiling fans."
Disclaimer: Curated by HT Syndication.
