MUMBAI, India, May 29 -- Intellectual Property India has published a patent application (202641062270 A) filed by Vellore Institute Of Technology, Vellore, Tamil Nadu, on May 16, for 'a resource-efficient deterministic interrupt-driven system for scalar control of single-phase motor drives.'
Inventor(s) include Dr. P. Ponnambalam; Dr. S. Albert Alexander; Ayan Sen; and Aritra Ghosh.
The application for the patent was published on May 29, under issue no. 22/2026.
According to the abstract released by the Intellectual Property India: "A Resource-Efficient Deterministic Interrupt-Driven System for Scalar Control of Single-Phase Motor Drives The present invention relates to an embedded control system for scalar V/f control of a single-phase motor drive implemented using an ARM7-based microcontroller. The system utilizes on-chip pulse width modulation (PWM), timer, and interrupt peripherals to achieve coordinated control of inverter voltage and frequency. Timer interrupts are employed to ensure deterministic and alternate switching of inverter legs, while an external interrupt triggered by a push button enables proportional adjustment of PWM duty ratio and inverter switching frequency. The adjustment is performed through direct modification of timer and PWM match registers, ensuring synchronized variation of voltage and frequency while maintaining a substantially constant voltage-to-frequency (V/f) ratio. The control operations are executed within interrupt service routines, eliminating the need for lookup tables, supervisory algorithms, or continuous CPU intervention. The invention provides a compact, low-cost, and energy-efficient control solution suitable for cost-sensitive motor drive applications."
Disclaimer: Curated by HT Syndication.
