ELECTRICAL MACHINES LAB (CCE)

SHE Level 2
SCQF Credit Points 10.00
ECTS Credit Points 5.00
Module Code M2H624905
Module Leader Alan Nesbitt
School School of Computing, Engineering and Built Environment
Subject SCEBE - School Office
Trimesters
  • A (September start)
  • B (January start)

Pre-Requisite Knowledge

Circuit Theory and Analysis/Electro-Mechanical Workshop/Electrical Machines

Summary of Content

This module exposes the students to the concepts of various types of electrical machines. Hands on experiments enable the students to gain practical experience. Appropriate analytical techniques will be developed and these will be applied to the analysis of the system to determine operating performance.

Syllabus

The syllabus will cover the following areas: Transformers: O.C and S.C. tests on 1-phase transformer Load test and % regulation on 1-phase transformer Load test on 3-phase transformer Parallel operation of two 3-phase transformers Induction Motor: Load test on 1-phase capacitor start induction motor No-load and blocked rotor tests on a single-phase capacitor start induction motor Load test on 3-phase slip ring induction motor Load test on 3-phase squirrel cage induction motor Synchronous Machines: -268 Synchronization of Synchronous Generator with main power supply Load test on Synchronous motor No-Load test on Synchronous motor DC Motors: Speed control of DC Shunt Motor Load test on DC Series Motor Load test on DC Shunt Motor Load test on DC Compound motor

Learning Outcomes

On completion of this module the student should be able to:1. Perform direct loading test on a single phase transformer to determine its efficiency and voltage regulation. (AM1,AM4,AM8)2. Conduct open-circuit and short circuit tests on a given single-phase transformer and to calculate the performance parameters. (AM1, AM4, AM8)3. Conduct an experiment on DC Shunt motor to control its speed and determine load characteristics using armature control method and flux control method. (AM1,AM4,AM8)4. Perform load test on DC shunt generator to plot its external characteristic. (AM1,AM4, AM8)5. Conduct load test on given 3-phase slip-ring induction motor and determine its % efficiency, BHP, torque and to graph the performance characteristics. (AM1,AM4,AM8)6. Conduct load test on a single-phase induction motor to determine its efficiency, torque and power factor. (AM1,AM4,AM8)7. Perform an experiment to synchronize a 3-phase Alternator with three phase mains using synchronizing lamps method. (AM1,AM4,AM8)

Teaching / Learning Strategy

The main teaching method will be based on laboratory exercises used to relate theoretical concepts to practical experience.

Indicative Reading

-360 1. Stephen J Chapman, " Electric Machinery and Power System Fundamentals", Mac-Graw Hill, 2001 -360 2. B.L.Theraja and A.K. Theraja, Text book of Electrical Technology", Vol. 1 and 2, S.Chand Publication, 2005. -360 3. P.CSen, "Principles of Electric Machines and Power Electronics", John Wiley and Sons, 2003 4. Alexander Langsdorf, "Theory of Alternating Current Machinery" TataMac-GrawHill, 2 nd Edition, 2001. S.K.Bhattacharaya, "Electrical Machines", Tata Mac-Graw Hill, 3 rd Ed.

Transferrable Skills

Laboratories provide:Interpersonal/team skills Reports provide:Communication/Literacy/Linguistic/Critical Evaluation

Module Structure

Activity Total Hours
Practicals (FT) 28.00
Independent Learning (FT) 64.00
Assessment (FT) 8.00

Assessment Methods

Component Duration Weighting Threshold Description
Coursework 1 n/a 50.00 35% Skill card+ viva voice+ lab Report: 50%
Exam (School) 1.50 25.00 35% End Term Lab test:25%
Exam (School) 1.50 25.00 35% Mid Term Lab test: 25%