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Unit information: Design of AC Machines in 2019/20

Please note: Due to alternative arrangements for teaching and assessment in place from 18 March 2020 to mitigate against the restrictions in place due to COVID-19, information shown for 2019/20 may not always be accurate.

Please note: you are viewing unit and programme information for a past academic year. Please see the current academic year for up to date information.

Unit name Design of AC Machines
Unit code EENGM0002
Credit points 10
Level of study M/7
Teaching block(s) Teaching Block 2 (weeks 13 - 24)
Unit director Professor. Phil Mellor
Open unit status Not open



EENGM7041 Electrical Drives is recommended

School/department Department of Electrical & Electronic Engineering
Faculty Faculty of Engineering


This unit introduces the analytical and numerical techniques that are used in the electromagnetic and thermal design of modern high-performance AC machines, in particular focussing on the design of AC induction motors and brushless AC permanent magnet machines. During the unit a parametric design spreadsheet will be developed and will be used to support an electrical machine sizing case study.

A second unit EENGM7041 Electrical Drives explores the control of AC machines.

Intended learning outcomes

Material characteristics: Be able to n – analytical methods: Thermal analysis: (Assessed by exam element) Design process: Be able to . (Assessed by exam element)

1. Explain the fundamental requirements that determine the operation and size of an electrical machine

2. Derive the bases of analytical techniques that are used in the design of AC windings, in the sizing of the magnetic circuit, and in the calculation of characteristic electrical parameters (inductance, emf, etc)

3. Embody analytical techniques in a parametric design tool that can be used to electromagnetically size an AC electrical machine stator

4. Examine how losses and their distribution are determined from the electrical machine operating point. Understand the use of lumped parameter thermal networks in determining electrical machine thermal behaviour

5. Appraise the critical requirements and material properties that impact the specification of an electrical machine design

6. Undertake an electromagnetic sizing of an electrical machine for a representative application case study

Teaching details

Lectures and workshop

Assessment Details

Design case study, 20% (ILO 3,5,6)

Exam, 2 hours, 80% (ILOs 1,2,4,5,6)

Reading and References

Design of AC Machines handout

Fitzgerald, Kingsley and Urmans, ’Electrical Machinery’, 6th Addition, McGraw Hill, ISBN 0071230106

Say, ‘Alternating Current Machines, ISBN: 9780582988750