# ELECTRICAL MACHINES AND POWER SYSTEMS - 2020/1

Module code: EEE3038

## Module Overview

This module aims to introduce the operating principles of electrical machines used in the power stations. Further this module will cover to a greater depth the concept of power transmission using interconnected grid systems, overhead and underground power transmission and distribution systems.

### Module provider

Electrical and Electronic Engineering

UNDERWOOD Craig (Elec Elec En)

### Module cap (Maximum number of students): N/A

Independent Learning Hours: 117

Lecture Hours: 30

Tutorial Hours: 3

Semester 2

None

## Module content

Indicative content includes:

[1] Fundamentals of Magnetism, Electromagnetism and Energy Conversion: Magnetic flux, electromagnetic induction, mutual inductance, energy stored in an inductor and capacitor. Energy conversion, efficiency and lossess in electrical machines. Work, energy and power.

[2] Fundamentals of AC Machines: Generation of AC voltage and currents, EMF equation, Phase, RMS value, Series AC circuits. Transformers: basic principles. Generators: Fundamentals of DC generator, Types of generators, Hysteresis and Eddy current loss, Difference between DC and AC generator. DC and AC Motor: Motor principle, Comparison of generator and motor action, Voltage equation of a motor, Torque production, Induction motor.

[3-4] Fundamentals of AC Power: Phasor notation, resistive, inductive and capacitive loads, power factor, active, reactive and complex power, apparent power. 3-phase, star and delta configurations, alternators on load, practical alternators and size effects. Synchronous reactance and voltage regulation. The infinite bus, parallel operation of two alternators and design problems.

[5-6] Transformers: Operation of single phase transformer on no-load and load, Transformer with winding resistance and leakage resistance, Efficiency of a transformer, Parallel operation of single phase transformers, Introduction to three phase transformers and design problems.

[7-8] Power System Network: Structure of power system, Interconnected grid system, Comparison of AC and DC power transmission, Comparison of overhead and underground systems, Types of load, Load curves and design problems.

[9-10] Power Distribution Systems: Components of distribution system, Overhead and Underground system, Types of distribution systems, Selection and size of feeders, Introduction to DC and AC distribution systems and design problems.

## Assessment pattern

Assessment type Unit of assessment Weighting
Examination 2-HOUR, CLOSED BOOK WRITTEN EXAMINATION 80

N/A

## Assessment Strategy

The assessment strategy is designed to provide students with the opportunity to demonstrate their analytical skills, background understanding of the subject, problem solving skills as well as identify any transferable skills that are relevant to the power industry.

Thus, the summative assessment for this module consists of:

• 2 hours exam that accounts for 80% of the assessment. The exam paper will be designed to test students’ theoretical knowledge as well as problem solving skills related to the learning outcomes of this module.

• Coursework: MATLAB/Simulink Design Exercise that accounts for 20%. This allows students to apply their knowledge to a practical design problem.

Formative assessment and feedback

Students will get verbal feedback after each problem solving sessions/tutorials. They will also get feedback via the coursework assessment.

## Module aims

• introduce the key principles of electrical machines, power generation and transmission
• introduce the power distribution systems and interconnected grid systems.
• To provide practical design experience through MATLAB/Simlink simulation

## Learning outcomes

 Attributes Developed 001 Explain the operation of AC generators and transformers and its applications for power systems KC 002 Describe the basic operation of AC and DC power transmission and distribution systems KC 003 Demonstrate an understanding of the operation of interconnected grid systems KT 004 Compare the suitability of overhead and underground transmission systems C 005 Apply the theoretical knowledge to workout design problems on power generation, transmission and distribution systems including by simulation PT 006 Describe the basic principles of operation of a range of electrical machines. KCT 007 Demonstrate a basic competence in performance calculations for generators, DC machines, transformers and induction motors. KCT

Attributes Developed

C - Cognitive/analytical

K - Subject knowledge

T - Transferable skills

P - Professional/Practical skills

## Methods of Teaching / Learning

The learning and teaching strategy is designed to: include regular lectures from Week 1 to 10. These lectures will include the problem solving sessions (30 hours: 3 hours lecture/tutorial per week for 10 weeks). Three hours of revision will take place in Week 11. Lecture notes will be provided and students are expected to do independent learning in addition to attending lectures and tutorials. In addition, a MATLAB/Simulink exercise is included on microgrid power system design.

The learning and teaching methods include:

• 3 hours lecture per week x 10 weeks which includes class discussion and problem solving sessions.

• 3 hours in-class revision in Week 11.

Indicated Lecture Hours (which may also include seminars, tutorials, workshops and other contact time) are approximate and may include in-class tests where one or more of these are an assessment on the module. In-class tests are scheduled/organised separately to taught content and will be published on to student personal timetables, where they apply to taken modules, as soon as they are finalised by central administration. This will usually be after the initial publication of the teaching timetable for the relevant semester.

Upon accessing the reading list, please search for the module using the module code: EEE3038

## Other information

The assessment is by examination (80%) and coursework design exercise (20%)

## Programmes this module appears in

Programme Semester Classification Qualifying conditions
Electronic Engineering BEng (Hons) 2 Optional A weighted aggregate mark of 40% is required to pass the module
Electrical and Electronic Engineering BEng (Hons) 2 Compulsory A weighted aggregate mark of 40% is required to pass the module
Electronic Engineering with Nanotechnology BEng (Hons) 2 Compulsory A weighted aggregate mark of 40% is required to pass the module
Electronic Engineering with Nanotechnology MEng 2 Compulsory A weighted aggregate mark of 40% is required to pass the module
Electronic Engineering with Space Systems BEng (Hons) 2 Optional A weighted aggregate mark of 40% is required to pass the module
Electronic Engineering with Space Systems MEng 2 Optional A weighted aggregate mark of 40% is required to pass the module
Electrical and Electronic Engineering MEng 2 Compulsory A weighted aggregate mark of 40% is required to pass the module
Electronic Engineering MEng 2 Optional A weighted aggregate mark of 40% is required to pass the module

Please note that the information detailed within this record is accurate at the time of publishing and may be subject to change. This record contains information for the most up to date version of the programme / module for the 2020/1 academic year.