MUMBAI, India, Jan. 9 -- Intellectual Property India has published a patent application (202541133292 A) filed by Sri Krishna College Of Engineering And Technology, Coimbatore, Tamil Nadu, on Dec. 30, 2025, for 'intelligent controller based improvement of power factor in industries with singly fed doubly wound induction machine.'
Inventor(s) include Dr. B. Karthikeyan; Dr. N. Manonmani; Dr. G. Radhakrishnan; Ms. S. Abirami; and Mr. R. Harish.
The application for the patent was published on Jan. 9, under issue no. 02/2026.
According to the abstract released by the Intellectual Property India: "In most of the industries 90% loads are driven by the induction motor. The induction motor draws the real and apparent power from the supply to drive the mechanical load. The reactive power drawn from the supply plays a vital role in power factor. The power factor depends on the active and reactive power. Almost 80% to 85% efficiency is achieved only at the 70% loading condition in Induction motor. The machine magnetic loading and electrical loading decides the machine performance and its operating power factor. During light load condition, the motor power is close to 0.2 to 0.3. In order to improve the power factor from zero to unity, the additional windings are added in the stator side of induction motor. The winding 1 is supplied from the three phase voltage source. In secondary winding of the stator, the voltage is induced by the mutual induction principle. The secondary is star connected and primary or winding 1 is delta connected. Whenever the connected mechanical load goes below the 70%, then the additional loading will be compensated by the secondary winding connected resistive loads. The power factor of the machine is decided by the secondary side resistive loads. Therefore the controller FX5U is obtaining the power factor from the power factor measuring unit, and the ladder or ST program compares the actual power factor with the measured power factor and turns on the lamp load at the secondary side via 8-channel relay."
Disclaimer: Curated by HT Syndication.
