12711 (v.3) Electrical Systems 204

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Area:	Department of Electrical and Computer Engineering
Contact Hours:	4.0
Credits:	25.0
Lecture:	1 x 2 Hours Weekly
Tutorial:	1 x 1 Hours Weekly
Laboratory:	1 x 2 Hours Fortnightly
Prerequisite(s):	12706 (v.2) Electrical Circuits 104 or any previous version
Review of three phase circuits and singly and doubly excited systems - Review of three phase circuits, review of magnetic circuit theory and flux linkages, Definition of Self and mutual Inductances, Torque production in a singly excited system, Torque production in a doubly excited system. Three-phase Induction Motors - rotating magnetic field theory, Exact equivalent circuit representation, Approximate equivalent circuit, Performance calculations, Torque-speed characteristics, starting torque, maximum torque, NEMA Classification of induction motors and energy efficient motors, equivalent circuit parameters from tests, starting methods and speed control (VVVF, vector control etc). Transformers - principles of operation and equivalent circuit, determination of parameters of approximate equivalent circuit, performance calculations, three phase transformer connections. DC Motors - series and shunt motor models, efficiency and torque-speed characteristics, DC motor speed control. Single phase induction motors - revolving field theory and equivalent circuit, performance calculations, split phase and capacitor start motors. Fractional horsepower motors - permanent magnet dc motor, reluctance motor and hysterisis motor, stepper motors.
Year Location Period Internal Area External Central External 2003 Bentley Campus Semester 2 Y