Electric Machinery Analysis

(3-0-0-3)

CMPE Degree: This course is Selected Elective for the CMPE degree.

EE Degree: This course is Selected Elective for the EE degree.

Lab Hours: 0 supervised lab hours and 0 unsupervised lab hours.

Technical Interest Groups / Course Categories: Threads / ECE Electives

Course Coordinator: Baoyun Ge

Prerequisites: ECE 3070 [min D] or ECE 3300 [min D]

Catalog Description

Advanced theory of AC machines, including AC motor winding design, finite element analysis, induction motor design, permanent magnet machine design, and synchronous machine dynamics. Credit not allowed for both ECE 4335 and ECE 6335.

Textbook(s)

Electric Machines

Course Outcomes

Analyze synchronous machines in both the steady and dynamic states.

Design inductors and transformers with cores and air gaps, from given specifications. 

Use equivalent circuits to analyze single phase, double cage, wound rotor and linear induction machines. 

Apply scaling laws to understand how performance varies with size.

Design 3 phase induction motors using appropriate approximations. 

Understand the properties and use of permanent magnets in synchronous machines.

Strategic Performance Indicators (SPIs)

N/A

Topic List

  1. Steady State Synchronous Machines
    1. Per unit system and rated values
    2. Review of basic operation
    3. Salient pole machines
    4. Design of machine windings and Finite Element Analysis of magnetic fields
    5. Machine modeling
    6. Permanent magnet machines
    7. Synchronous reluctance machines
    8. Performance characteristics
  2. Dynamics Of Synchronous Machines (Sarma 10.1 thru 10.4)
    1. Coupled circuit (DQ) modeling of AC machines
    2. Transient reactances and time constants
    3. Transient parameters
    4. Transient stability
    5. Short circuit and sudden voltage change behavior
    6. Constant flux linkage theorem
    7. Time domain solution
    8. Small signal modeling and block diagram
    9. Control of synchronous generators
  3. Induction Machines
    1. Review of basic operation
    2. Wound rotor machines
    3. Squirrel cage machines
    4. Double cage and deep-bar motors
    5. Single phase machines
    6. Linear induction motors
  4. Scaling Laws for AC Machines
  5. Design of Induction Machines
    1. Factors affecting main magnetizing inductance
    2. Factors affecting leakage inductance
    3. Slot design
    4. Machine resistances, skin effect
    5. Thermal design
  6. Switched Reluctance Machines