EEE2201 : Electrical Systems
- Offered for Year: 2017/18
- Module Leader(s): Dr Charles Su
- Owning School: Engineering
- Teaching Location: Singapore
|Semester 1 Credit Value:||10|
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.
|Guided Independent Study||Assessment preparation and completion||1||5:00||5:00||Lab report.|
|Guided Independent Study||Assessment preparation and completion||1||2:00||2:00||Final examination.|
|Guided Independent Study||Assessment preparation and completion||18||1:00||18:00||Revision for final examination.|
|Scheduled Learning And Teaching Activities||Lecture||6||1:00||6:00||Tutorials|
|Scheduled Learning And Teaching Activities||Lecture||24||1:00||24:00||N/A|
|Guided Independent Study||Assessment preparation and completion||1||5:00||5:00||Case study/ problem solving exercises.|
|Scheduled Learning And Teaching Activities||Practical||2||3:00||6:00||Lab sessions.|
|Guided Independent Study||Independent study||34||1:00||34:00||General reading; reviewing lecture notes; solving practice problems.|
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.
The format of resits will be determined by the Board of Examiners
|Case study||1||M||15||Case 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.
- Reading List Website : rlo.ncl.ac.uk