# Modules

### EEE2012 : Control and Electrical Machines

• Offered for Year: 2019/20
• Module Leader(s): Dr Dave Atkinson
• Lecturer: Dr Mohammed Elgendy
• Owning School: Engineering
• Teaching Location: Newcastle City Campus
##### 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 completion300:157:30Revision for class test
Guided Independent StudyAssessment preparation and completion11:001:00Class test
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
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.