This unit introduces students to Magnetic circuit theory, Faraday's and Lenz's laws. Students will be required to undertake calculation of forces on moving charges, and analyse various magnetic circuits. DC machines, as motors and generators, will be discussed including the development and application of equivalent circuits in the performance analysis of DC machines. Transformer fundamentals, applications of transformers in power systems and their performance analysis using equivalent circuits will further be covered. Single phase and three phase Induction machines will be investigated including the application of equivalent circuits in the performance analysis of induction machines. The starting methods of induction motors will be explored. Other topics that are critically reviewed in this unit are: synchronous machines, generator operations and analysis, motor operations and analysis, synchronous generator performance on infinite bus, synchronous condensor, power factor calculations and corrections.

Unit details

Location:
Study level:
Undergraduate
Credit points:
12
Unit code:
NEE3103

Prerequisites

NEE2101 - Electrical Circuits

NEF2251 - Fundamentals of Electrical and Electronic Engineering

NEE2101 OR NEF2251

Learning Outcomes

On successful completion of this unit, students will be able to:
  1. Apply fundamentals of mechanical and electromagnetic energy conversion in diverse contexts;  
  2. Demonstrate knowledge of the structure of DC and AC electrical machines and the purpose of the various components;  
  3. Apply relevant equivalent circuit models of various electrical machines and analyse their operational performance under wide ranging conditions;  
  4. Analyse simple power systems containing transformers and synchronous generators to solve fundamental problems;  
  5. Critically analyse various starting techniques of motors;  
  6. Construct test platforms for testing purposes and set up complex electrical connections of electrical machines; and  
  7. Review and evaluate appropriate applications of A.C. machines in industries.  

Assessment

Assessment type Description Grade
Laboratory Work Three Laboratory Reports (1500 words each; Team of Two) 20%
Test Mid-semester Test (1 hour) 20%
Examination End-of-Semester Examination (3 hours) 60%

Required reading

Electric Machinery Fundamentals 5th ed.
Chapman, S. J. (2012)
McGraw-Hill.

Electrical Transformers and Rotating Machines 4th ed.
Herman, S. L. (2016)
Cengage Learning.

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