National Institute of Technology Patna

A novel soft switching minimum phase electric vehicle charger for wide range operating voltage/current

This article proposes a soft switching minimum phase Electric Vehicle charger (SSMP-EVC) for a wide range voltage/current charging application. The proposed charger is designed to transfer power from utility grid to electric vehicle's (EV) batteries in two stages at domestic plac...

A spatiotemporal deep learning framework for detecting unusual human activity in surveillance videos

With smart gadgets and computers everywhere, real-time video monitoring is now necessary to keep people secure and lower the chance of unexpected human actions. However, current surveillance systems have a lot of trouble effectively spotting unusual actions in real life. Most of...

Digital Twins in the Architectural Design Stage for Sustainable Net-Zero Buildings: A Systematic Review of Frameworks, Tools and Research Gaps

Early architectural decisions shape building energy demand and life cycle carbon, yet digital support remains fragmented across modelling, simulation and performance workflows. This systematic review examines how digital twin (DT) frameworks, tools and workflows are applied at th...

Phasor estimation using enriched side-lobe suppressor-based three-point interpolated DFT technique

Purpose The prompt measurements of variation in phase, amplitude and frequency of a sinusoidal signal are crucial in a complex electrical network system. A Phasor measurement unit (PMU) uses a phasor estimation technique to estimate the phasor of the voltage and current signals,...

OPTIMIZATION OF PERFORMANCE PARAMETER OF IC ENGINE POWERED BY BLENDED KARANJA BIODIESELS WITH DISTINCT INJECTORS USING TAGUCHI-BASED HYBRID APPROACHES

Performance characteristics and emissions parameters of a Kirloskar diesel engine having single-cylinder compression ignition (CI) with direct injection (DI), water-cooled, running at 1500 rpm with variable load were tested in the blending percentage of Karanja methyl esters (KME...

Influence of hybrid graphene–ceramic reinforcements on Hollomon parameters and mechanical behavior of AA2024 composites

Purpose The combined effect of graphene and ceramic reinforcements on the mechanical properties, microstructural characteristics, strain-hardening behavior and Hollomon parameters of AA2024 hybrid composites was systematically investigated. Design/methodology/approach A hybrid me...