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Module

EEE3002 : Electrical Machines

  • Offered for Year: 2021/22
  • Module Leader(s): Dr Glynn Atkinson
  • Owning School: Engineering
  • Teaching Location: Newcastle City Campus
Semesters
Semester 1 Credit Value: 10
ECTS Credits: 5.0

Aims

To provide a thorough basis for electrical machines study at advanced level.

To be able to analyse electrical machines in numerical and 2D finite element simulation systems.

To have an overview of Electrical Machines in the modern world and in the context of the Electrification Revolution.

Outline Of Syllabus

Mechanical Modelling and transient behaviour

Transients in dc machine, time constants, distinction between electromechanical and electrical transients, linearization concepts, numerical methods. Electromechanical transients in ac machines, natural oscillation frequencies, discussion of behaviour in physical terms, with reference to equivalent circuits.



DC Machines as the basis for the general machine model

Torque speed characteristics

Armature reaction, compensating windings, commutation, interpoles.

Brushless dc drives: Principles of operation: sinusoidal and trapezoidal drives. Relationship to brushless dc machine.



AC Synchronous Machines

Salient pole Synchronous Machine -dq approach: -

DQ axis reactance models, salient pole phasor diagrams, torque and power calculations, reluctance and excitation torque, voltage and current fed performance, wound rotor and PM types.

Circuit analysis of electrical machines: -

Permanent magnet synchronous machines: salient pole operation and the application of field weakening.



AC asynchronous machines

Induction machine models for control purpose; relationship of induction motor models to synchronous and dc.



General Machine Theory

An understanding of alternative reference frames, dq, alpha/beta, space vector, forward/backward, rotor/stator/air gap and their transformations for each machine type. An explanation of the merit of each derived machine model.

Development of circuit models from dc machine and synchronous machine routs. Impedance matrix; instantaneous and phasor variables; real-coil and pseudo-stationary coil machines; expressions for torque and power, transformation of variables with power invariance, examples; general two-axis machine.



Electrical machines driving the Electrification Revolution

Intersp[ersed throughout the course, research into automotive and aerospace applications of electrical machines and modern manufacturing methods and materials in electrical machines. To include industrial guest lecturers.

Teaching Methods

Teaching Activities
Category Activity Number Length Student Hours Comment
Guided Independent StudyAssessment preparation and completion15:005:00Preparation and completion of summative individual assignment
Guided Independent StudyAssessment preparation and completion121:0012:00Revision for final exam.
Guided Independent StudyAssessment preparation and completion11:301:30Completion of summative individual assessment during normal assessment period
Structured Guided LearningLecture materials180:309:00Eighteen Non-synchronous pre-recorded lectures covering course material and worked examples.
Scheduled Learning And Teaching ActivitiesLecture21:002:00Two synchronous guest lectures from industry
Guided Independent StudyAssessment preparation and completion41:004:00Formative online test summarizing each unit and laboratory work
Structured Guided LearningStructured research and reading activities41:004:00Reading activity to supplement knowledge of material taught in each unit.
Scheduled Learning And Teaching ActivitiesWorkshops111:0011:001 hour timetabled PiP workshops per week covering tutorials simulation activities & general discussi
Scheduled Learning And Teaching ActivitiesWorkshops12:002:00Initial 2-hour software training session PiP/online
Scheduled Learning And Teaching ActivitiesDrop-in/surgery31:003:00Three one-hour surgery sessions (available live online)
Guided Independent StudyIndependent study128:3028:30Reviewing lecture notes; general reading
Guided Independent StudyIndependent study180:309:00Student study time of non-synchronous pre-recorded material
Guided Independent StudyIndependent study180:309:00Student led study and completion of set activities
Total100:00
Teaching Rationale And Relationship

Non-synchronous videos provide the core material (explainers) whilst PiP lectures will be used to cover worked examples, practice simulations and to take general questions. These will take place in a mix of computing labs and lecture or seminar rooms. Additional individual support will be offered in a surgery slot timed toward the end of each unit. Software training and problem solving is introduced and practiced through PiP lectures in computing labs.

The PiP lectures can be replaced with online synchronous sessions support by non-synchronous videos if the public health situation requires it.

Assessment Methods

The format of resits will be determined by the Board of Examiners

Exams
Description Length Semester When Set Percentage Comment
Written Examination901A75Set as individual assessment with online submission and a 48 hour window to complete. Marking 60% automated.
Other Assessment
Description Semester When Set Percentage Comment
Written exercise1M25Application based individual assignment with online submission and 80% automated marking.
Formative Assessments
Description Semester When Set Comment
Computer assessment1MCanvas based mini-test to self-assess progress after each unit. Individual feedback on submission with general class feedback given
Assessment Rationale And Relationship

The individual off campus examination allows students to demonstrate their ability to solve engineering problems , based on the knowledge and methodology presented in the course material. Three questions are set, all individually parameterised to ensure copying is not possible. Assessment is designed to test core knowledge, deeper understanding and the topic in the wider world.

The individual assignment focuses on skills obtained by the course midpoint and will offer the opportunity to demonstrate understanding of material and capabilities in the simulation software introduced and understanding gained in the power laboratory.

The formative computer-based assessment will assess the students’ level of understanding at the end of each of the four units and provide useful feedback on strengths and weaknesses.

Reading Lists

Timetable