Study Abroad and Exchanges

Modules

Modules

EEE2012 : Control and Electrical Machines

Semesters
Semester 1 Credit Value: 20
ECTS Credits: 10.0

Aims

To introduce students to topics in electrical engineering and control including polyphase circuits; polyphase synchronous machines; three-phase distribution systems; polyphase induction machines; electric drives, 1st and 2nd order dynamics, system modelling using matlab simulink, analysis of system stability using time and frequency domain characteristics.

Outline Of Syllabus

Matlab introduction; study of 1st and 2nd order dynamics in time domain.

Transfer function; s-plane analysis; block diagrams; time domain specfications and high order systems.

Closed loop systems; steady state error and controller design.

Root locus and design based on root locus.

Polyphase Circuits: Balanced 3 phase circuits, 3 phase phasor representations; summation of currents to zero; neutral; start and data connections; per phase calculations.

Polyphase Synchronous Machines: Production of rotating field by balanced excitation of poly phase winding; Concept of synchronous operation; theory of synchronous operation; theory of synchronous machine with uniform airgap.

Equivalent circuit, voltage equation, alternative sink and source conventions, typical phasor diagrams, electrical power as a function of load angle; operation characteristics with constant power and varying excitation, relationship to phasor diagram; torque angle.

Three phase distribution systems: 3-phase power system analysis; per unit system; reason for use; choice of base, single phase representation of balanced polyphase operation; 3 phase transformer construction; star and delta connection; phase shift in delta connection.

Polyphase Induction Machines:-
Transition from synchronous to asynchronous operation; derivation of exact equivalent circuit;
modification of exact equivalalent circuit by application of thevenins theorem 'rotor current' mechanical power, torque, condition for torque to be maximum; effect of changing rotor resistance on current and torque characteristics.

Electrical Drives:-
Review of AC drives, 3-phase PWM voltage source inverter; freewheel diode function, deadtime;
analogue implementation of 3-phase PWM, constant voltage per hertz control; Basic PM sychronous
motor drive.

Case study lecture.
Industrial induction motor drive.

Teaching Methods

Teaching Activities
Category Activity Number Length Student Hours Comment
Guided Independent StudyAssessment preparation and completion25:3011:00Lab report
Guided Independent StudyAssessment preparation and completion300:3015:00Revision for PC exam
Guided Independent StudyAssessment preparation and completion11:301:30Closed book examination (Machines)
Guided Independent StudyAssessment preparation and completion300:3015:00Revision for final exam
Guided Independent StudyAssessment preparation and completion13:003:00Open book examination (Control)
Scheduled Learning And Teaching ActivitiesLecture121:0012:00Tutorials
Scheduled Learning And Teaching ActivitiesLecture242:0048:00N/A
Guided Independent StudyAssessment preparation and completion300:157:30Revision for class test
Guided Independent StudyAssessment preparation and completion11:001:00Class test
Scheduled Learning And Teaching ActivitiesPractical43:0012:00N/A
Guided Independent StudyIndependent study174:0074:00Reviewing lecture notes; general reading
Total200:00
Teaching Rationale And Relationship

Lectures provide the core materials as well as guidance for further reading. Tutorials offer the opportunity for practice in the analysis of a system's models and a system's behaviour. Some aspects of the course are further re-enforced through laboratory experiments.

Assessment Methods

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

Exams
Description Length Semester When Set Percentage Comment
Written Examination1801A42Open book practical examination (Control)
Written Examination901A38Closed book examination (Machines)
Written Examination601M5Mid term exam
Other Assessment
Description Semester When Set Percentage Comment
Practical/lab report1M152 lab reports worth 7.5% each
Assessment Rationale And Relationship

There are four assessment methods for this module;
A 1.5 hour examination, assessing the students' knowledge of the core material in a traditional written examination.
A 3 hour open book assessment carried out with access to any printed material and use of Matlab/Simulink simulation software. This is to assess the students' ability to apply the course material to a more practical situation, in simulating and obtaining results from various control scenarios.
A 1 hour mid-term test gives the student the opportunity to assess their understanding of the course at an intermediate point, with only 5% of the module at risk, and take appropriate action in time for the remaining 80% of examined marks.
Two laboratory reports are to be written, one covering the electrical machine experiments and the other covering the control systems experiments.

Semester 1 Study Abroad students will be able to sit the assessment earlier.

Reading Lists

Timetable