School of Electrical Engineering & Telecommunications, UNSW


ELEC4613 Electric Drive Systems


Lecturers: Dr. Dan Xiao (Room EE111) / Prof. Faz Rahman (Room Hilmer 642)


Session 2, 2018





Two catch up labs have been scheduled next week, as indicated below, so that you may complete your experiments. You may note that completion of all four experiments is compulsory for this course.


Catch-Up lab schedule:


T14A (Even Weeks) 2 5pm

Demonstrators: Kazi Saiful Alam+ Ryan Zhu


W13A (Even Weeks) 1 4pm

Demonstrators: Guoyu Chu + Ilham Osman





Tutorial classes will start from week 3.




08 August 2018.


You may note that labs in elec4613 will be starting from Monday in week 3 (next week). Lab group T14A (Tuesday Even weeks) currently has three enrolments more than 16 which the lab can accommodate. I request that any three students of this group to volunteer to move to other lab groups which may have empty slots. According to current enrolment figure, there should be 5 vacant slots in other lab groups. Of these two are in M14B (2-5pm Monday in Odd weeks). Lab schedule was last updated on 08/08/2018, based on most recent enrolment data.




For your experiment allocations see the first item in Laboratory below.


Labs will start from week 3 for students enrolled in ODD week lab groups, and from week 4 for students enrolled in EVEN week lab groups. There are four experiments E1 E4, each of two sets. Please note that, in view of lab capacity (in terms of equipment availability), each lab group must be limited to 16 students.


1.    Experiments can be carried out by no more than two students/group. There are two sets for each experiment. Thus, there can be at most 16 students in a lab session.

2.    Each student must bring his/her own lab sheets for each experiment (down loadable from this page see below)

3.    Each student must bring his/her own logbook (available from stationary shops on campus) for recording experimental data, drawing graphs and for attaching print outs from the CRO (oscilloscope). Log or work books can be bought at any stationary shops within the campus. These typically have several graph and ruled pages, normally A4 size, facing each other. You may also be able to record some of the CRO displays into your USB memory.

4.    You must present your logbook to the lab demonstrator at the end of each lab session for marking. Your logbook will be marked, signed and then returned to you before you leave the lab.

5.    All lab sessions start strictly at stipulated times indicated in the time table. Try to enter the lab well before lab sessions start. Late arrival, by more than 10 minutes, will not be accepted.


Lab is compulsory; you must complete all four experiments in order to receive your final assessment. If you fail to attend a scheduled lab class, due to illness or other, you should see Laboratory Schedule in order to find available lab slots for your unattended lab.


1.     Mid-session Test



The mid-session exam will be held as indicated below:


Date:            Tuesday, 04/09/2018

Time:            18:30 to 20:30

Location:     ChemScM17


Duration of the test will be of 2 hours. Topics covered in the test may include material up to end of Section 4 (i.e., Sections 1 4, all inclusive). Note that this test is worth 10% of the total mark for this course.


Also note that this exam will be held under proper exam conditions. No reading materials will be allowed into the exam room. You are advised to bring your own UNSW approved calculator.


2.     Assignment


The assignment will consist of dynamic system simulation of one of your experiments. Assignment topics will be allocated to students in later weeks.


Each student will carry out Simulink or PSIM simulation/model on the assigned experiment and submit a report. Full versions of these simulation platforms are available on computers in the School of EET. The assignment report must be submitted into a collection box entitled: ELEC4613, outside the School Office at L5 Hilmer by 5pm on Sunday in Week 13. The Assignment report is worth 10% of the final assessment for this course.



Course Outline

Assignment/Technical Reports

Guidelines for Assignment

Experiment allocation for lab and assignment reports

ppt file on Simulation of Electric Drive Systems using Simulink and Matlab

Introduction to Simulink Electric Drive Systems (video) : about 40 minutes, may only be useful for beginners to Simulink.

Simulink model of DC Motor Drive (EX1) video

Simulink model of IM drive using Slip Power Recovery (EX2) video

Simulink model of IM drive using V/f and IRFOC (EX3) video

Simulink model of PMSM drive using V/f and RFOC (EX4) video




Laboratory Schedule and Demonstrator Allocation

Guidelines on Lab Report and Simulation Assignment

Laboratory General Instructions

School Safety Manual for Laboratory

Laboratory Safety Declaration


Experiment 1 - DC motor drive with inner current loop

Experiment 2 Induction motor drive with slip power recovery

Experiment 3 - Induction motor drive driven by V/f inverter and RFOC

Experiment 4 - Synchronous motor drive with V/f & RFOC

Simulation models for experiments E1 E4



Tutorial 1 - Introductory drive concepts Solution of Tutorial 1

Tutorial 2 DC motor drive Solution of Tutorial 2

Tutorial 3 Synchronous motor drive Solution of Tutorial 3 Solution of Tut 3 from D. Xiao

Tutorial 4 Induction motor drive Solution of Tutorial 4

Tutorial 5 Drive dynamics & Control Solution of Tutorial 5


Lecture Notes:

Section 1. 1.0 - Introduction and Basic Concepts in Drive

Section 2. DC Motor Drives

2.1 - Brushed DC Motor Drive characteristics (review from ELEC3105)

2.2 - PWM converter driven DC drives

2.3 - Thyristor converter driven DC drives


Section 3. Brushless DC motor Drive

Section 4. Synchronous Motor Drives

4.1 - Analysis of synchronous machine Part I (review from ELEC3105)

4.2 - Analysis of synchronous machine Part II (review from ELEC3105)

4.3 - VSI synchronous motor drive

4.4 - CSI synchronous motor drive

Section 5. Induction Motor Drives

5.1 Analysis of Induction Motor Drive (review from ELEC3105)

5.2 - Performance with variable voltage, rotor power and frequency

5.3 - Performance of v-f drive at low speed

5.4 - Performance under CSI drive

Section 6. Dynamic model and control of DC, synchronous and induction machines.

6.1 Dynamic model and control of DC machines

6.2 - Dynamic model and control synchronous motor drives

6.3 - Dynamic model and control of induction machines

Section 7. Controller design issues for Electric Drives

7.1 Control structures

7.2 Sensors for position, speed and current

7.3 Current Controller design

7.4 Speed controller design

7.5 Position controller design



Power Point Presentations

Section 1 Section 2 Section 3 Section 4 Section 5 Section 6

Section 7


Past Exam Papers:

2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017

Solutions of past exam papers are not available. You may see the lecturer for help with solving problems in past exam papers.