COURSE DESCRIPTION
El Eng 305 – Electric Drive Systems
(Offered Fall semesters)
Required or Elective Course: Elective
Catalog Description:
[Lect 3.0] Course content is roughly 1/3 power electronics, 1/3 applied control, and
1/3 electric machinery and focuses on analysis, simulation, and control design of
electric drive based speed, torque, and position control systems. Prerequisites: El Eng
205 Electromechanics and El Eng 231 Controls.
Prerequisites by topic: Introductory electromechanics, differential equations, electronics
Textbooks and other required material:
P.C. Krause, O. Wasynczuk, S. D. Sudhoff, Analysis of Electric Machinery, (IEEE
Press, 1996).
Course objectives:
1. Understand formulation of nonlinear state models of electromechanical systems,
numerial solution techniques.
2. Be able to simulate systems governed by nonlinear ODEs. Simulate systems using
the ACSL (Advanced Continuous Simulation Language).
3. Understand application of reference frame theory and the selection of reference
frames to simplify analysis and control.
4. Understand and simulate voltage- and current-controlled inverters (180 degree,
PWM, sine-triangle PWM, hysteresis, delta-modulation).
5. Design and model BDC-based drive systems utilizing voltage- and current-control
schemes and induction machines that are volts/hertz and vector-controlled.
Topics covered:
1. State equations, unique solutions, Euler solution of nonlinear ODEs (1 week)
2. Introduction to ACSL (1.5 weeks)
3. Review of magnetically coupled circuits, energy conversion (1 week)
4. Reference frame theory (1.25 weeks)
5. Modeling Brushless DC machines (1.25 weeks)
6. Voltage-source and current-source inverters (2.5 weeks)
7. Designing Brushless DC drives (2 weeks)
8. Modeling induction machines (1.5 weeks)
9. Constant Volts/Hz Drives and Vector Controlled Drives (2 weeks)
10. Examinations (1 week)
Class/Laboratory schedule:
Three 50-minute or two 75-minute lectures/week are typical.
Contribution of course to meeting the professional component:




Students are introduced to the use of drives systems (electric machines, power
electronics, and controls) that are used in most industrial automation,
manufacturing, electric propulsion, and bulk power systems
Students become familiar with commercial software (ACSL/Matlab) and
numerical techniques used to simulate electric machines and drive systems
Students design basic speed and position control systems utilizing
Students become exposed to secondary effects of drives, including harmonics,
torque ripple, etc.
Relationship of course learning outcomes to ECE program outcomes:
ECE
Outcome
a
1
S
b
c
d
Course Outcomes
2
3
4
5
M S
S
W
W
M S
e
M
M
M
M
f
g
h
i
j
k
l
W
W
W
W
M
S
M
W
M
M
Comments
Applications are linked to fundamental
knowledge
M
S – strong connection; M – medium connection; W – weak connection
Prepared by: Steve E. Watkins
Date: June 16, 2008