MUMBAI, India, April 17 -- Intellectual Property India has published a patent application (202621031632 A) filed by Visvesvaraya National Institute Of Technology, Nagpur, Maharashtra, on March 16, for 'a reconfigurable three-phase three-level active neutral point clamped converter.'
Inventor(s) include Narendrababu A; and Devwrat.
The application for the patent was published on April 17, under issue no. 16/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to a reconfigurable three-phase three-level active neutral point clamped converter (ANPCC). The proposed ANPCC converter employs a reconfiguration strategy that reconfigure a conventional eighteen-switch ANPCC into reduced-component configurations, namely Reduced Switching State Neutral Point Clamped (RSS-NPC), during post fault operation. The topology utilizes shared outer switches and clamping switches for all three phases while inner switches for individual phases during post fault operation. Active or passive clamping paths have been utilized to maintain three levels of voltage generation while enhancing fault tolerance-even under conditions where multiple phase leg switches fail at the same time. Active neutral-point voltage control during post fault operation with the help of virtual space vector modulation and PI controller ensures that balanced DC-link capacitor voltages and reduced ripple across modulation indices. Upon fault detection, the control logic isolates faulty switches and reconfigures current paths to enable uninterrupted operation with reduced switching states and controlled currents for full range of power factor. The proposed configuration improves reliability, and fault resilience without requiring additional power electronic switches, making it suitable for renewable energy systems, motor drives, and grid-interactive power conversion applications."
Disclaimer: Curated by HT Syndication.
