Electric Machinery Analysis
(3-0-0-3)
CMPE Degree: This course is Not Applicable for the CMPE degree.
EE Degree: This course is Not Applicable for the EE degree.
Lab Hours: 0 supervised lab hours and 0 unsupervised lab hours.
Technical Interest Group(s) / Course Type(s): Electrical Energy
Course Coordinator: Thomas G Habetler
Prerequisites: ECE 3300
Corequisites: None.
Catalog Description
An introduction to the analysis and basic construction principles ofrotating electric machines and transformers, including ac synchronous
and induction machines and dc machines. Credit is not allowed for both ECE 4335 and ECE 6335.
Textbook(s)
Introduction to AC Machine DesignCourse Outcomes
Not Applicable
Student Outcomes
In the parentheses for each Student Outcome:"P" for primary indicates the outcome is a major focus of the entire course.
“M” for moderate indicates the outcome is the focus of at least one component of the course, but not majority of course material.
“LN” for “little to none” indicates that the course does not contribute significantly to this outcome.
1. ( Not Applicable ) An ability to identify, formulate, and solve complex engineering problems by applying principles of engineering, science, and mathematics
2. ( Not Applicable ) An ability to apply engineering design to produce solutions that meet specified needs with consideration of public health, safety, and welfare, as well as global, cultural, social, environmental, and economic factors
3. ( Not Applicable ) An ability to communicate effectively with a range of audiences
4. ( Not Applicable ) An ability to recognize ethical and professional responsibilities in engineering situations and make informed judgments, which must consider the impact of engineering solutions in global, economic, environmental, and societal contexts
5. ( Not Applicable ) An ability to function effectively on a team whose members together provide leadership, create a collaborative and inclusive environment, establish goals, plan tasks, and meet objectives
6. ( Not Applicable ) An ability to develop and conduct appropriate experimentation, analyze and interpret data, and use engineering judgment to draw conclusions
7. ( Not Applicable ) An ability to acquire and apply new knowledge as needed, using appropriate learning strategies.
Strategic Performance Indicators (SPIs)
Outcome 1 (Students will demonstrate expertise in a subfield of study chosen from the fields of electrical engineering or computer engineering):
1. Complete a detailed electromagnetic design of an induction motor.
2. Analyze the complete mutual and leakage electromagnetic field distribution in a symmetric ac machine produced by multi-layer distributed windings.
Outcome 2 (Students will demonstrate the ability to identify and formulate advanced problems and apply knowledge of mathematics and science to solve those problems):
1. Design AC machines with improved efficiency, higher torque density, lower cost, etc, using state-of-the-art computational and mathematical methods.
2. Design AC machines for specific applications.
Outcome 3 (Students will demonstrate the ability to utilize current knowledge, technology, or techniques within their chosen subfield):
machines.
1. Utilize modern concepts such computation intelligence and optimization in the design of AC machines.
Course Objectives
Topical Outline
1. Fractional and full pitch windings
a. MMF of a distributed winding
b. Concentric windings
c. Effect of slots
d. Winding Skew
2. Main Flux Path
a. The Main Magnetic Circuit of an Induction Machine
b. The Effective Gap and Carter's Coefficient
c. The Effective Length
d. Calculation of Tooth Reluctance
e. Magnetic Equivalent Circuit
f. Calculation of Magnetizing Reactance
3. Leakage Reactance
a. Components of Leakage Flux in Induction Machines
b. Slot Leakage Permeance Calculations
c. Slot Leakage Inductance
d. End-Winding Leakage Inductance
e. Zig-Zag Leakage Inductance
f. Stator Harmonic or Belt Leakage
g. Effective Resistance and Inductance of Squirrel Cage Rotor
h. Rotor Air Gap MMF
i. Skew Leakage Inductance
4. Losses and Resistance
a. Eddy Current (Skin) Effects in Conductors
b. Calculation of Stator Resistance
c. Core Losses Due To Fundamental Flux Component
d. Stray Load and No Load Losses
e. Calculation of Surface Iron Losses Due to Stator Slotting
f. Calculation of Tooth Pulsation Iron Losses
g. Friction and Windage Losses
5. Principles of Design
a. Design Factors and Standards
b. Main Design Features
c. The Output Coefficient
d. Power Loss Density and Sizing
e. Flux Loading
6. Computer-Based Design
a. Finite Element Analysis
7. Permanent Magnet Machine Design