ECE 522: Induction Machines
University of Idaho
Fall Semester 2015
Syllabus
1. (2 lessons) Introduction and History of Induction Machines (Machines)
Welcome to ECE 522 Induction Machines
Course policies, syllabus, and expectations
History of the induction machine
Induction machine construction and operation: Squirrel cage, wound rotor, DFIG
2. (6 lessons) Steady State Circuit Models (Machines)
Purpose of steady state equivalent circuit models
Induction machine equivalent circuit model
Performance elements: currents, slip, torque, power
Limits of performance: max torque, starting torque, slip frequency
Steady state field orientation from a circuit perspective
3. (2 lessons) Winding Theory (Lipo)
Winding functions, turns functions
Magnetic flux profiles
Calculation of inductances
Examples
4. (8 lessons) Induction Machine Models and Reference Frame Theory (Lipo, Krause,
Maxwell)
Induction machine equations: voltage, current, flux, speed, and torque
Conversion to dq0 variables
Definition of the reference frames
Squirrel cage and wound rotor models
DFIG internal voltage model
Expressing an induction machine model’s equations in each reference frame
Finite element models
Examples
5. (4 lessons) Induction Machine Simulation: MATLAB and Simulink (MS, Maxwell)
Introduction to MATLAB and Simulink
Expressing equations in a form appropriate for simulation
Modeling the induction machine in Simulink
Finite element simulation
Obtaining simulation results
Examples
6. (2 lessons) Complex Vector Methods (Handout)
Definition of complex variables
Expressing machine equations in complex vector form
Examples
7. (6 lessons) Field orientation / vector control of induction machines (Krause)
Fundamentals of variable speed drives
Principles and constraints of vector control
Field orientation as a special case of field orientation
Simplified machine model for steady state field orientation
Dynamics of field orientation
Examples
8. (6 lessons) Small Signal Analysis (Lipo, handout)
Constant speed eigenvalues
Linearization techniques
Small signal model equations
Machine performance and stability considerations
Examples
9. (6 lessons) Wind Turbine Generator Models (Wu)
Review DFIG model
Wind turbine modeling
Control of wind turbine
Examples
10. (2 lessons) Examinations
This syllabus may be modified during the semester based on student learning and interest. ECE 522 (3 cr., graduate, Fall semester alternative years) Winding theory, reference
frame theory, induction machine models, complex vector methods, small signal
analysis, induction machine capability, simulation, introduction to variable speed
drives.
Textbooks:
1. (Machines) The textbook that you used when learning your introductory
understanding of induction machines.
2. (Lipo) Lipo, Thomas A. Introduction to Electric Machine Design. University of
Wisconsin. ISBN 978-0974547053
3. (Krause) Krause, Paul C., Washyczuk, Oleg, Sudhoff, Scott D., and Pekarek,
Steven. Analysis of Electric Machinery and Drive Systems, Third Edition. IEEE
Press. ISBN 9781118024294. eISBN 9781118524336
4. (MS) MATLAB and Simulink Help Library.
5. (Wu) Wu, Bin, Lang, Yongqiang, Zargari, Navid, and Kouro, Samir. Power
Conversion and Control of Wind Energy. ISBN 9780470593653. eISBN
9781118028995.
6. (Maxwell) On-line application notes for Ansys Maxwell.