Computational Fault Analysis and Protection of Three Phase Induction Motor
Keywords—Three-phase induction motor; fault protection; PIC 16F877A microcontroller; single phasing; over-voltage; under-voltage; over-current; current transformer; protective relay; fault detection.
Abstract
Three-phase induction motors are the workhorse of modern industry, yet they remain vulnerable to a variety of electrical and mechanical faults that can cause costly unplanned downtime. This paper presents a comprehensive microcontroller-based protection system for three-phase induction motors capable of detecting and responding to single phasing, over-voltage, under-voltage, and over-current conditions in real time. The PIC 16F877A microcontroller serves as the central processing unit, monitoring six analog inputs representing three-phase voltages and currents sampled via step-down transformers (220 V/6 V) and current transformers acting as current-to-voltage converters. Digital thresholding logic compares instantaneous measurements against pre-programmed nominal limits and issues trip signals to protective relays when violations are detected. An LCD interface provides continuous real-time display of fault parameters, and the system incorporates an auto-restart feature upon parameter recovery. Simulation and hardware test results confirm reliable fault detection, rapid trip response, and cost-effective implementation compared with conventional relay-only schemes.
Registration ID: IJVRA_701923 Published ID: IJVRA2603454
"Computational Fault Analysis and Protection of Three Phase Induction Motor", IJVRA - International Journal of Versatile Research and Analysis (www.IJVRA.org), ISSN:2984-8903, Vol.4, Issue 3, page no.473-478, March-2026, Available :https://ijpub.org/ijvra/papers/IJVRA2603454.pdf
Paper Reg. ID: IJVRA_701923
Published Paper Id: IJVRA2603454
Research Area: Science and Technology
Country: Nagpur, Maharashtra, India
ISSN: 2984-8903 | IMPACT FACTOR: 9.12 Calculated By Google Scholar | ESTD YEAR: 2023
An International UGC CARE JOURNAL PUBLICATION Low Cost (₹599), Scholarly Open Access, Peer-Reviewed, Refereed Journal Impact Factor 9.12 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage, Crossref DOI Member Journal Indexing in All Major Database & Metadata, Citation Generator
Publisher: IJVRA (IJ Publication) Janvi Wave
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