Electrical Engineering Department
King Mongkut’s University of Technology Thonburi, Bangkok THAILAND
EEE 373
Electric Motor Drives
Term Project I
(Due date: Monday, October 24, 2016)
3 (3-0-6)
This is a team project consisting of five members each team. Each team is required to submit only one
CD. The CD should be labeled with team number, the member names and IDs. It should also contain the
following files:
1. For part I, a report (.doc) that includes the following sections :
- title page showing course information and team member / their ID
- section 1: relevant theories
- section 2: simulation results for part I
- section 3: discussion on results for part I
- section 4: conclusion
2. All Matlab/Simulink files used for simulations in part I.
3. For part II, another report (.doc) that includes the following sections :
- title page showing course information and team member / their ID
- section 1: product information (functions, price, manufacturer profiles, etc)
- section 2: technical specifications
- section 3: discussions on the product usage, technical data, etc.
- section 4: references (e.g., website link)
Part I Speed controls of DC motor drives
The dc motor parameters and ratings are given below:
Ratings: 6.3 amp, 200 volt, 1000 rpm
Parameters: Ra = 4 ohm, La = 0.018 H
Ke = 1.86 volt/(rad/sec), Kt = 1.86 N.m/amp
J = 0.01 kg.m2, B = 0.0162 N.m/(rad/sec), Tload = 0 N.m
1.1 Simulate the dc motor drive with the constant dc voltage of 200 volt. Every team is required to
complete this item. Plot the waveforms of motor speed (m), electromagnetic torque (Te) and armature
current (ia). The block diagram is shown below:
+
Vo
-
ia
DC Motor
Te
m
Tl
1.2 Simulate the dc motor drive with the full-bridge dc/dc converter for the averaging output voltage of
200 volt. Plot the waveforms of motor speed (m), electromagnetic torque (Te) and armature current (ia).
The block diagram is shown below:
+ Vdc Vcontrol
ia
PWM
Driver
Chopper
DC Motor
+
Vo
Tl
Te
m
Each term is required to complete only one PWM scheme as indicated below. The switching frequency
(fs) is 1 kHz and the dc voltage source (Vdc) is 300 volt.
(1.2a) Bipolar PWM scheme
(1.2b) Unipolar PWM scheme 1
(1.2c) Unipolar PWM scheme 2
-- for Team #1, 4, 7, 10, 13
-- for Team #2, 5, 8, 11, 14
-- for Team #3, 6, 9, 12
1.3 Simulate the dc motor with simple speed closed-loop control using PWM + PID control for the fullbridge dc/dc converter. This part is to get familiar with the speed closed-loop drive of dc motor. The PID
gains must be tuned so that the speed and current responses are optimal. The reference speed is a step
from zero to the rated speed (1000 rpm).
Plot the waveforms of motor speed (m), electromagnetic torque (Te), armature current (ia) and output
voltage (Vo). The overall block diagram is shown below:
+ Vdc -
 m*
+
m
-
PID
Controller
Speed
Controller
Vcontrol
PWM
Driver
ia
Chopper
DC Motor
+
Vo
Te
Speed feedback
Controller
m
Tl
Tachogenerator
(Permanent magnet dc generator)
Each term is required to complete only one PWM scheme as indicated in part 1.2. The switching
frequency (fs) is 1 kHz and the dc voltage source (Vdc) is 300 volt.
1.4 Simulate the current-limiting speed closed-loop control using PWM current controller for the fullbridge dc/dc converter. This part is to get familiar with the speed closed-loop drive of dc motor. The PID
gains must be tuned so that the speed and current responses are optimal. The reference speed is a step
from zero to the rated speed (1000 rpm).
Plot the waveforms of motor speed (m), electromagnetic torque (Te), armature current (ia) and output
voltage (Vo). The overall block diagram is shown below:
+ Vdc -
 m*
+
m
-
PI
Controller
Speed
Controller
i a*
+
ia -
PI
Controller
Vcontrol
PWM
Driver
Current
controller
Current feedback
Chopper
ia
- Vo +
DC Motor
Te
Speed feedback
m
Tl
Tachogenerator
Controller
Each term is required to complete only one PWM scheme as indicated in part (1.2). The switching
frequency (fs) is 1 kHz and the dc voltage source (Vdc) is 300 volt.
Note: Extra points will be given if the additional simulation works in different conditions are
provided such as speed responses under load torque, speed reversal responses, or etc.
Part II Product related to the DC (servo) motor or stepping motor drives
In this part, each team is required to search for a product related to the DC (servo) motor or stepping
motor drives from website. The chosen product must not be the same one as other teams in the class, so it
is your responsibility to check with your friends. Then, each team writes another report describing this
product. This report includes the following sections:
-
title page showing course information and team member / their ID
section 1: product information (functions, price, manufacturer profiles, etc)
section 2: technical specifications
section 3: discussions on the product usage, technical data, etc.
section 4: references (e.g., website link)
http://www.geindustrial.com/cwc/Dispatcher?REQUEST=PRODUCTS&omni_key=PrdHomeMO
http://www.ab.com/catalogs/
http://www.controltechniques.com/CTcom/products.aspx
http://www.danfoss.com/Products/Categories/
http://www.schneider-electric-motion.com/index.php?scriptlet=CMS/Content&id=2&language=en
http://sea.siemens.com/motioncontrol/default.html
http://www.abb.com/ProductGuide/
http://www.hitachi-america.us/products/business/isd/index.html
http://www.toshiba.com/ind/index.jsp
http://www.mitsubishi-automation.com/frame.php?file=products/products.html
http://www.yaskawa.co.jp/en/business/index.html
http://www.omron247.com/Industrial-Automation/Store/TopCategoriesDisplayView_-1_10051_10051
http://www.deltaww.com/products/products_ia.asp
http://www.weg.net/th/Products-Services/Automation
Note: Extra points will be given if the chosen product is innovative !!