Assessfy Pvt. Ltd Beginner 5 milestones 100 marks

Three-Phase Induction Motor Speed Control using VFD

Target year: SE Sem 3-4 (Mini-Project-I) AICTE: 2 credits · ~50 hrs Bloom: Apply MU CBCS: EE403 Mini-Project 1A/1B

Real-world project · AICTE-aligned · AI-graded · Audit-ready certificate

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Core skills

About this project

Build a Variable Frequency Drive (VFD) bench-setup to control speed of a 1 HP three-phase induction motor. Use a commercial VFD (Delta VFD-EL or equivalent) + Modbus interface from a laptop. Plot V/f curves + slip-vs-load characteristic.

Course Learning Outcomes (CLOs):
CLO1: Apply V/f control fundamentals to vary motor speed.
CLO2: Set up + parameterize a commercial VFD.
CLO3: Measure mechanical + electrical quantities under load.
CLO4: Document a test plan + results in IEEE format.

Industry/societal relevance: Foundation skill for industrial automation jobs at Siemens, ABB, Schneider, L&T E&A — every factory uses VFDs.

Milestones

1. VFD Selection + Wiring Diagram

15 marks 5d

Pick VFD per motor rating, draw single-line + control wiring. Submit BOM + diagram.

2. Bench Assembly + Safety Check

20 marks 8d

Wire VFD + motor + protection. Faculty approval before energizing. Document safety checklist.

3. Open-Loop Speed Variation

25 marks 12d

Set freq 10/20/30/40/50 Hz, measure RPM + line current + voltage. Plot V/f curve.

4. Loaded Test (slip measurement)

20 marks 12d

Add mechanical load via eddy-current brake (or prony brake). Measure slip + torque at 5 load points.

5. Demo + 4-page Report

20 marks 13d

Live demo: show speed change at 5 frequencies. Submit IEEE-format report with V/f + slip-load plots.

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Skills you'll learn

Electrical MachinesPower Electronics basicsVFD parameter setupModbus protocolLab safetyMultimeter + tachometer measurement

Tools used

Delta VFD-EL series VFD1 HP 3-phase induction motorMCB + contactorTachometerMultimeterLaptop with Modbus simulator

Prerequisites

Electrical Machines-I; Basic Power Electronics; lab safety training

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Three-Phase Induction Motor Speed Control using VFD

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