Intellectual Property India Publishes Patent Application for 'Protection And Control Of Three Phase Induction Motor Using Microcontroller' Filed by Ms. S. Janani; Dr. B. Tharani; Ms. T. Akshaya; Ms. S. Deva Nandhini; Ms. B. Sandhiya; Dr. R. Senthilkumar; and Dr. G. Sundar

MUMBAI, India, Feb. 6 -- Intellectual Property India has published a patent application (202541084945 A) filed by Ms. S. Janani; Dr. B. Tharani; Ms. T. Akshaya; Ms. S. Deva Nandhini; Ms. B. Sandhiya; Dr. R. Senthilkumar; and Dr. G. Sundar, Coimbatore, Tamil Nadu, on Sept. 8, 2025, for 'protection and control of three phase induction motor using microcontroller.'

Inventor(s) include Ms. S. Janani; Dr. B. Tharani; Ms. T. Akshaya; Ms. S. Deva Nandhini; Ms. B. Sandhiya; Dr. R. Senthilkumar; and Dr. G. Sundar.

The application for the patent was published on Feb. 6, under issue no. 06/2026.

According to the abstract released by the Intellectual Property India: "This project presents the design and development of a three-phase induction motor protection and control system using a microcontroller. The aim is to ensure the safe and efficient operation of the motor by continuously monitoring the voltage and current of all three phases. The system is capable of automatically turning the motor ON and OFF based on user input or fault conditions. One of the major faults in three-phase systems is phase loss, commonly known as single phasing. In such cases, the motor may continue running under unbalanced load, which can lead to overheating and damage. To prevent this, the microcontroller detects any phase failure and immediately switches off the motor. The system also identifies and displays the specific missing phase (R, Y, or B) on an LCD screen, providing clear fault diagnosis to the user. In addition to fault detection, the system continuously displays the real-time voltage of each phase and the current drawn by the motor. If the current exceeds a predefined safe limit, the motor is turned off to prevent overcurrent damage. The use of a microcontroller allows for efficient processing of sensor data and precise control of the relay module that operates the motor. The LCD display provides an easy-to-read interface for monitoring system status, voltage, current, and any fault conditions. This project offers a cost-effective and reliable solution for protecting three-phase induction motors, particularly in industrial and agricultural applications. It can be further enhanced by integrating wireless communication modules for remote monitoring and alert systems."

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