ELECTRICAL MACHINES

SHE Level 4
SCQF Credit Points 20.00
ECTS Credit Points 10.00
Module Code MHH622355
Module Leader Dong Chen
School School of Computing, Engineering and Built Environment
Subject Electrical Power Engineering
Trimester
  • A (September start)

Pre-Requisite Knowledge

Plant and Electrical Distribution Systems (SD3) or equivalent

Summary of Content

The module examines electromagnetic and electromechanical systems (electrical machine systems). An understanding of system components will be developed. Advanced electromagnetic and electromechanical analysis techniques will be developed. The student will apply this to the analysis of systems to determine operating performance. Manual and computer-aided techniques will be employed. The student will apply these techniques to the design of machines.

Syllabus

The taught syllabus will cover the following areas: Windings: Types. Pitch and distribution factors, harmonics, tangential and radial field components, emf, applications, winding analysis and design. Electromagnetics: Generalised approaches to the analysis of electromagnetic and electromechanical systems, field energy and Maxwell stress methods, application of FE techniques and validation of results (2D magnetostatic field problems). Permanent Magnets: Types, characteristics, sensitivity to temperature and demagnetising fields, energy product, load line approach, manufacture, application and selection. Induction Machine: Steady-state models, transient models (d-q axis, rotor reference frame and transformation), application to drives, dynamic operation and unbalanced conditions. Switch Reluctance: Construction and characteristics, idealised model (zero resistance, linear inductance), non-idealised model, torque/angle and flux/current characteristics, dynamic performance, control strategies and drive systems, application of ECAD. DC Brushless: Construction and characteristics, transient and steady state models, computer-aided solutions, typical applications. Control Strategies: Methods and applications of control techniques from practical examples, industrial input will be sought to deepen the students' grasp of this area. Design and Applications: Strategies, design process, synthesis, application of analysis techniques and models, manufacturing and material considerations, use of standards, appreciation of economic, legal and environmental implications of design decisions, interpretation of specifications and evaluation of possible configurations and options. Condition Assessment: Strategies and application of condition monitoring techniques, interpretation of data and evaluation of output.

Learning Outcomes

On completion of this module the student should be able to:Develop models and characterising equations for a range of electromagnetic and electromechanical systems. Apply these models and equations to analyse the performance of these systems.Describe the general process of the design of electromagnetic machines and is able to apply this to the first pass design of a machine.Understands practical limitations imposed by material property, economic, environmental, standards, legal, health and safety considerations.

Teaching / Learning Strategy

Study pack, study area in laboratory, demonstrations, practical exercises, directed studies, mini- project, lectures and tutorials, computer-based supported analysis, web-based resources and communication tools, guest lectures from industry.

Indicative Reading

Essential: Electric Machinery, McGraw-Hill, A E Fitzgerald, C Kingsley, S.D.Umans,2003 Recommended: Modelling and High-Performance Control of Electric Machines, IEEE Series on Power Engineering, John Chiasson, 2005 Dynamic Simulation of Electric Machinery, Chee-Mun Ong, Prentice Hall, 1997 Electric Machines (Steady-State Theory and Dynamic Performance), West Publishing, M S Sarma, 1995 Electric Machines and Drives, Addison-Wiley, G R Slemon,1992 Principles of Electric Machines and Power Electronics, Wiley, P C Sen, 1997 Brushless Permanent-Magnet and Reluctance Motor Drives, Oxford Science Publications, T J E Miller Electronic Control of Switched Reluctance Machines, Newnes, T J E Miller, 2001 Electric Motors and Drives, Newnes, A Hughes, 1993 Various journals, conference proceedings and other related publications (e.g. IEEE and IET Power Engineering Journals)

Transferrable Skills

Critical analysis, problem solving, time management, report writing skills, research skills

Module Structure

Activity Total Hours
Assessment (PT) 18.00
Lectures (FT) 24.00
Practicals (FT) 24.00
Independent Learning (FT) 134.00
Practicals (PT) 12.00
Lectures (PT) 24.00
Independent Learning (PT) 146.00
Assessment (FT) 18.00

Assessment Methods

Component Duration Weighting Threshold Description
Coursework 1 n/a 15.00 n/a Coursework 1 - Design Exercise
Exam (Exams Office) 3.00 70.00 35% Final Exam
Coursework 2 n/a 15.00 n/a Coursework 2 - Design Exercise