Module Catalogue

### EEE2201 : Electrical Systems

• Offered for Year: 2017/18
• Module Leader(s): Dr Charles Su
• Owning School: Engineering
• Teaching Location: Singapore
##### Semesters
 Semester 1 Credit Value: 10 ECTS Credits: 5.0

#### Aims

To introduce students to topics in electrical engineering including polyphase circuits; polyphase synchronous machines; three-phase distribution systems; polyphase induction machines; electric drives.

#### Outline Of Syllabus

•       Polyphase Circuits:
Balanced 3 phase circuits, 3 phase phasor representations; summation of currents to zero; neutral; star and delta 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 equivalent 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 synchronous 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 completion181:0018:00Revision for final examination.
Scheduled Learning And Teaching ActivitiesLecture61:006:00Tutorials
Scheduled Learning And Teaching ActivitiesLecture241:0024:00N/A
Guided Independent StudyAssessment preparation and completion15:005:00Case study/ problem solving exercises.
Guided Independent StudyAssessment preparation and completion15:005:00Lab report.
Guided Independent StudyAssessment preparation and completion12:002:00Final examination.
Scheduled Learning And Teaching ActivitiesPractical23:006:00Lab sessions.
Guided Independent StudyIndependent study341:0034:00General reading; reviewing lecture notes; solving practice problems.
Total100:00
##### Teaching Rationale And Relationship

Lectures provide core material and guidance for further reading, problem solving practice is provided through tutorials. Work is further re-enforced through laboratory sessions.

#### Assessment Methods

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

##### Exams
Description Length Semester When Set Percentage Comment
Written Examination1201A70N/A
##### Other Assessment
Description Semester When Set Percentage Comment
Practical/lab report1M15N/A
Case study1M15Case study/ problem solving exercises.
##### Assessment Rationale And Relationship

The laboratory report assesses the record keeping, data gathering and analysis ability of the student. The examination provides the opportunity for the student to demonstrate their understanding of the course material. The problem solving aspects of the assessment enable the student to demonstrate that they are able to apply this understanding and their analysis and synthesis skills to novel situations.