# Course Title: Electrical Systems

## Part A: Course Overview

Course Title: Electrical Systems

Credit Points: 12.00

### Teaching Period(s)

EEET2418

Voc Training Ctre of Hong Kong

125H Electrical & Computer Engineering

Face-to-Face

Offsh1 12

Course Coordinator: Dr Thurai Vinay

Course Coordinator Phone: +61 3 9925 2104

Course Coordinator Email: thurai.vinay@rmit.edu.au

Course Coordinator Location: Building 10, Level 8, Room 15 (City Campus, Melbourne, Australia)

Course Coordinator Availability: correspondence by email only

Pre-requisite Courses and Assumed Knowledge and Capabilities

You are expected to be familiar with DC circuit concepts. You should have the capability to determine, by analysis as well as by measurement, the steady-state voltages and currents in simple DC circuits. You should be able to list the key characteristics of the ideal operational amplifier, and determine the input-output voltage relationship in DC circuits that incorporate the ideal operational amplifier.You should be able to solve simple 1st order linear differential equations, perform algebraic operations on complex numbers, represent complex numbers by vectors, and sketch graphs of standard functions such as the step, sinusoidal, and exponential functions.

Course Description

You will build on your previous studies of electric circuits, and extend your analysis capability to cover transients in DC circuits. You will learn steady state analysis techniques to deal with circuits that contain one or more sinusoidal voltage and current sources (AC circuits), solve AC circuits involving magnetically coupled circuit elements (transformers), and explore general concepts of signals and systems including time domain, and frequency domain analyses, and the notion of filtering. You will also explore the basic principles of electromechanical energy conversion, and develop mathematical model for the constant field DC machine.

Objectives/Learning Outcomes/Capability Development

The capabilities that you will learn, develop and exercise in this course are:

Technical competence: Ability to use steady state techniques to analyse AC circuits, including circuits with transformers; Ability to determine the transfer function of simple circuits including filters.
Problem solving and decision-making: Ability to formulate and solve problems involving analysis of electric systems.
Communication and Teamwork: Ability to communicate effectively in writing (both textually and graphically); Ability to interact with peers and to work effectively in small groups during laboratory and tutorial classes.
Lifelong learning: Ability to obtain information from on-line resources and others and undertake self-directed study.

On completion of the course, you will be able to:
1. Derive differential equations of RC, RL, and RLC circuits, and solve them to obtain the transient and steady state responses.
2. Identify the frequency, peak value, RMS value, and phase of a sinusoidal signal.
3. Solve steady-state AC circuits using phasors and complex impedances.
4. Compute power, reactive power, apparent power, and power factor for steady-state AC circuits.
5. Perform power factor correction calculations
6. Use an oscilloscope for the display and measurements of AC electrical signals.
7. State the fundamental concepts of Fourier analysis.
8. Use circuit analysis to determine the transfer function of simple circuits.
9. Draw Bode plots for transfer functions of 1st and 2nd order filters using MATLAB.
10. Determine the output of a filter to a given input consisting of sinusoidal components using filter’s transfer function.
11. Find the voltages across mutually coupled inductances in terms of the currents.
12. Calculate the voltage induced in a coil by a changing magnetic flux or in a conductor cutting through a magnetic field.
13 Solve circuits that include ideal transformers.
14. Use equivalent circuit of real transformers to determine their regulation and power efficiencies.
15. Calculate forces on moving charges and current-carrying wires due to magnetic fields.
16. Develop a mathematical model for the constant field DC motor and use it to analyse its transient and steady state performances.

Overview of Learning Activities

• Lecture/Tutorial: One, 3-hour session per week; 8 weeks
You can learn efficiently (and save much of your time later in the trimester) by attending these weekly classes punctually. The lecturer will elaborate on the material in the lecture slides by providing additional explanations and illustrations. You are encouraged to be an active participant by asking relevant questions, and seeking clarifications when required.
All lecture slides are made available to you online at the start of the semester through myRMIT Studies.
You are advised to bring a printed copy of the lecture slides to the class. You will then be able to focus more on listening and taking brief notes, rather than on copying the lecture slides.
• Laboratory: A total of 12 hours in all, split into a number of sessions
Attendance at lab sessions at the scheduled times is compulsory as it forms part of the formative assessment.
Team learning has become essential to modern enterprises because teams represent the fundamental learning unit of organisations. You will need group and team skills if you are to contribute efficiently and effectively to the development of solutions to complex engineering problems.
The laboratory exercises will give you the opportunity to develop, in some small way, your group and team skills. Working in a small group, you will carry out the experimental work and prepare a group report.
A laboratory instruction sheet for each lab is available online. Before attending each of your scheduled lab sessions, you are required to print a copy of the relevant laboratory instruction sheet, read and reflect on it carefully, and attempt an online quiz. You will be assessed individually (based on the online quiz) and as a team (during the lab session and through your final group report).
• Problem Solving (online Quizzes): You will be given in advance a set of tutorial questions. You are required to attempt on your own or in a small group of peers the set of problems and attempt an online quiz in a timely manner. The online quizzes will form part of the formative assessment.
• Appropriate references including links to on-line resources will be given from time to time during the course for you to expand your knowledge of the topics thereby developing your lifelong learning habits.

Overview of Learning Resources

It is strongly recommended that you have your own copy of the prescribed text book. Often you will be directed to read specific sections in the prescribed text book. Mostly, problems from the prescribed text book will be discussed during the lectures and tutorial classes.

A majority of the learning resources (including topic learning guides and lecture slides) for this course will be made available to you online through myRMIT Studies.

A series of online quizzes will be released progressively for you to attempt and obtain instant feeback and marks.

Tutorial questions will be made available online in advance for you to attempt on your own or in a small group with your peers in a timely manner.

For each laboratory, an instruction sheet will be made available online in advance so that you can prepare for the laboratory work before coming to the class.

During the course, you will be directed to many websites to enhance your understanding of difficult concepts.

Overview of Assessment

Assessment in this course will be both formative, and summative.
o Formative evaluation will be based on (i) regular problem solving exercises, and (iii) hands on laboratory work.
o Summative evaluation will be based on a 2-hr written final examination at the end of the term.

Regular problem solving exercises: These may take the form of online quizzes and/or written submissions during scheduled tutorial classes.

Hands on laboratory work: You will be required to work in a small group and complete a specified number of laboratory exercises during the course.

Written final examination: You will be required to attempt a specified number of questions. These questions will test your understanding of the major concepts and techniques learnt in this course.