This module forms an introduction to electrical power systems and typical components found in such systems. The module deals with a broad range of theory and analysis relating to energy distribution, circuit and electromagnetic theory, behaviour of circuits under differing loading conditions, implementation of power factor correction and the use of electrical drives. An integrated Project contributes towards the final mark of this subject.
Electrical Network Distribution
Introduction to power generation methods, voltages systems and ratings.Transmission and distribution system. Final distribution transformer. LVdistribution to consumers. Earthed system.
Circuit Design
Concepts of overload, short-circuit and earth fault. Effects of overcurrents.Relationship between load, protective device and cable ratings. Protectivedevices, fuses, MCBs and RCDs. Protection against electrical shock.
AC Circuits
RLC series and parallel circuits. Solutions using complex numbers and phasordiagrams. Real, reactive and apparent power. Power factor and power factorcorrection.
Three Phase AC Circuits
Star and delta connections. Delta-star and star-delta Transformations. Three phase, three wire and three phase, four wire systems. Relationships between phase and line quantities. Calculation of currents, voltages and power in balanced and unbalanced three-phase systems.
Electromagnetism
Revision of magnetism and magnetic circuits. Faradays Law, Lenz's Law, Lorentz Force, Flemming's Left and Right Hand Rules.
Transformers
Transformer principles, ideal transformer calculations. Magnetising current, ironand copper losses, equivalent circuit.
Motors
Introduction to common electrical machines: Induction motors, synchronous motors, DCmotors and generators. Motor characteristic curves. Motor effiency and motor/load matching. Basic operation of electrical drives.
| Module Content & Assessment | |
|---|---|
| Assessment Breakdown | % |
| Other Assessment(s) | 40 |
| Formal Examination | 60 |