Lecture Set 0
ECE321/ECE595
Electromechanical Motion Devices/
Electromechanics
S.D. Sudhoff
Spring 2016
Courses Meeting Together
• Courses
ECE321 Live {321L}
ECE321 Video {321V}
ECE595 On Campus {595C}
ECE595 Off Campus – Pro Ed {595P}
• Differences
321V and 595C will take exams elsewhere
595P will take exams at designated sites
595C/595P will have modified homework and exams
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What This Course is About
• Fundamental concepts related to the analysis of
electromechanical devices
• Fundamental and quantitative understanding of the
operating principals of electromechanical devices
• Some design considerations
• Concentration on the physics, the operating principals, and
the modeling
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What This Course is Not About
• Not about how to pick electromechanical devices from a
catalog
• Not about a technology survey
• Not about how to use an equation
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Background
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BSEE, Purdue, 1988
MSEE, Purdue, 1989
PhD, Purdue, 1991
P.C. Krause and Associates, 1991-1993
University of Missouri – Rolla, 1993-1997
Purdue, 1997 -
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Background
• Interests (Technical)
Electromechanical Devices
Power Magnetics
Applied Automatic Control
Evolutionary Computing / Optimization Techniques
Automated Design
• Interests (Non-Technical)
Distance Running (Marathon 3:13:41; Half 1:30:09)
Amateur Astronomy (WVAS)
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Course Objectives
1. Ability to Analyze/Design Electromagnetic Devices
2. Understand Principles of Electromagnetic Energy
Conversion
3. Understand Time-Varying Transformations
4. Analysis/Understanding of DC, Brushless DC, Induction
Machines
5. Analysis of Power Converters for DC Machines
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Topics
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Magnetically Coupled Circuits (7)
Energy Conversion (6)
VR Stepper Motors (3)
DC Machines (4)
DC/DC Power Converters (3)
Rotating MMF (5)
Reference Frame Theory (2)
Brushless DC Machines (5)
Transformers (1)
Induction Machines (6)
Exams (3)
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Course Text
• P.C. Krause, O. Wasynczuk, S.D. Pekarek,
“Electromechanical Motion Devices, 2nd Edition”
• S.D. Sudhoff, “Lecture Handouts for ECE321”, Boiler
Copy Maker or e-mail (Pro-Ed)
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Before You Take This Course
• Prerequisites
EE202 and Phys 261
• Also, You Should Be Good At
Calculus
Basic Linear Algebra
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Contact Information
• Instructor: Professor S.D. Sudhoff
Office: Wang 2057
E-mail: sudhoff@purdue.edu
Phone: 765-494-3246
Office Hours: See course web site
• Course Web Site
http://cobweb.ecn.purdue.edu/~sudhoff/
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Contact Information
• Area Secretary: Chris Ramsey
Office: Wang 2080
E-mail: cramsey@purdue.edu
Phone: 765-494-6442
• Teaching Assistant: TBD
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Homework
• Put your name and course {321L, 321V, 595C, 595P} in
upper right hand corner of each homework.
• Homework will be assigned every Wednesday (more or
less) and due the following Wednesday (more or less)
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Homework
• Homework submission:
ECE321L Submit in class on paper. Due at beginning of
period on due date.
ECE321V, ECE595C, ECE595P. Submit via single PDF
file to Chris Ramsey. Due at 10 pm on due date.
Filename should be
ECE321V_HWX_Jane_Doe.pdf
ECE595P_HWX_John_Doe.pdf
(X=homework number)
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Homework
• The percent of homework you correctly answer
over the semester will be calculated.
• Late homework will not be accepted
• You may freely discuss your homework with other
students; however, individual work is expected.
• Lowest 3 homework scores will be dropped.
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Mini-Project
• A small design project will be assigned during the course of
the semester.
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Exams
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Exam 1: Friday, February 12, 2016 (in-class)
Exam 2: Wednesday, March 9, 2016 (in-class)
Exam 3: Friday, April 8, 2016 (in-class)
Exam 4: Final Exam Period (1st Hour)
Non-cumulative portion over last material
• Exam 5: Final Exam Period (2nd Hour)
Cumulative portion over entire course
• Average Exam Score
Your average exam score will be taken to be the average
of the best 4 out of 5 of your scores on the above.
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Exam Policies – Calculator
(321 and 595)
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Effective beginning in January 2015, the only
calculator permitted for exams in ECE undergraduate
courses (those at the 10000 – 40000 level) will be the
Texas Instruments TI-30X IIS scientific calculator.
This is an inexpensive calculator with a 2-line display,
a fraction feature, one or two-variable statistics, simple
conversions, and basic scientific & trigonometric
functions. Students are encouraged to familiarize
themselves with the use of this calculator well in
advance of any exam.
This policy addresses the potential for academic
dishonesty given the features of many advanced
calculators (programmability, large memory capacity,
wireless communication, etc.), thus ensuring the
integrity of the exam. In addition, a common
calculator provides a fair and uniform exam
experience for all students
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Exam Policies
• No computers, cell-phones, PDAs, slide rules, abacus, rulers, etc.,
except as noted. TI-30X IIS scientific calculators are allowed.
Bring one.
• If you forget a calculator, I will loan you one subject to my supply. It
will cost you 10 pts. I will distribute these in the order people request
them until I run out. If I run out, you will have to do the best you can
w/o a calculator. I am not going to do calculator sharing any more.
• If you have a similar calculator to the one specified, but not the one
specified, it will cost you 10 pts.
• If you have a calculator substantially different from the one specified I
won't allow you to use it, but will loan you one if I have one (subject
to the 10 pt penalty). If I run out, you'll have to do the best you can
without.
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Exam Policies
• One 8.5 by 11 inch piece of paper (both sides) allowed for each
exam. Two sheets are allowed for the final.
• If I can see any course materials other than the crib sheet, it is
considered cheating (I do not even want to see a closed book – put
all books in a closed opaque backpack)
• Do not look past your own desk. Hats with front brims are not
allowed.
• Graded exams are released if a regrade is needed.
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Exam Policies
• Makeup exams will only be rarely allowed, as your lowest
exam score will be dropped. I will ask questions orally and
you will write answers on a piece of paper.
• Bring your student ID to exams.
• Exams will be curved on a per test basis.
• Regrade form should be turned in within 2 weeks of date the
exam is returned
• 321L: Exams will be in class
• 321V and 595C: Exams will be at the same time as the
321L exams, but in a different room
• 595P: Exams will be on the same day, but at designated
sites and times
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Cheating
• At minimum, cheating will result in a zero on the
assignment in question.
• All instances of cheating, even suspected cheating, will be
reported to the ECE Assistant Head for Education and the
Assistant Dean of Students
• Exams may by photographed/videotaped
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Satisfying ABET
{321L, 321V, 595C}
• Must satisfy if in 321L, 321V, 595C whether graduate or
undergraduate
• This course has five objectives.
• You must demonstrate a level of achievement in each of
these to pass the course.
• This may be done by satisfying the ABET exam.
• The ABET Exam is a take-home exam is roughly 4 weeks
prior to end of semester.
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ABET Exam
It is about the length of a one-hour exam
It may be viewed as practice for the cumulative final
It will have an ABET question over each objective
This exam is to be worked independently
Every answer must be completely correct to be accepted
We will grade as turned in; and let you know which
questions are incorrect
If you get a question wrong, you may rework and
resubmit until you get it correct or until the beginning of
the last class period.
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ABET Exam
• Late ABET exams will cause a reduction of your
course average by 5 points / business day
• After 5 business days, the exam will no longer be
accepted and you will fail the ABET exam
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Nominal Course Grade
• Average exam score based on best 4 out of 5 exam
scores
• Aggregate Score
80 % Average Exam Score
5 % Mini Project
15 % Homework
• The +/- system for letter grades will be used
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Final Grade and ABET
• 321L,321V,595C
If you don’t pass the ABET requirement, you will not be
eligible for a passing grade.
If you pass ABET requirements, your grade will be your
nominal grade except for adjustments for late ABET
exams if applicable.
• 595P
You don’t need to worry about ABET. You can work the
ABET exam for practice or fun if you like.
Your grade will be your nominal grade.
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Letter Grade Scale
• After rounding your cumulative score to an
integer
• A-: 90-92, A: 93-96, A+: >= 97
• B-: 80-82, B: 83-86, B+: 87-89
• C-: 70-72, C: 73-76, C+: 77-79
• D-: 60-62, D: 64-66, D+: 67-69
• F: <=59
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Disclaimer on Policies
• In the event of a worldwide pandemic, asteroid impact,
global flood, Sharknado, or invasion of space-alien
homework-eating cyborg super beagles, or other such event,
class policies may be adjusted midcourse. Information will
be posted on course web site in such a case.
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Personal Tragedies
• There is much that can go wrong in life, such as death of
a family member. While you are always welcome to
discuss such events with me, please note that you may
miss an exam and 3 homeworks with no questions asked.
You should save your dropped homework and exams just
in case such an event occurs. If something happens
which requires measures beyond this, or which causes
conflict with the final exam (which counts as two exams),
please contact me.
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