Conference Preview
IEEE IEMDC'99
International Electric Machines and Drives Conference

May 9-12, 1999 * Cavanaugh's Hotel
Seattle, Washington, USA

Questions/Inquiries
e-mail the IEMDC99 Secretariat at
IEMDC99@engr.washington.edu

Conference Chair
Mohamed El-Sharkawi
University of Washington
Electrical Engineering Department
Box 352600
Seattle WA 98195
elsharkawi@ee.washington.edu

Conference Management
Engineering Professional Programs
University of Washington
10303 Meridian Ave N #301
Seattle WA 98133-9483
tel: 206.543.5539
EPP Home Page

IEMDC99@engr.washington.edu

Tutorials

Four tutorials, organized by the IEMDC99 Technical Program Committee, will be presented on Sunday, May 9, 1999. The tutorials will run from 9:00 a.m. to 5 p.m. The fee for each is US$100, in addition to the conference registration fee. (Student fee: $50)

  1. Diagnostics and Control of Electric Machines using Computational Intelligence
    Mohamed A. El-Sharkawi, Robert J. Marks II, Paul Werbos, Craig Jensen
  2. CANCELLED
    Application of Intelligent Systems Techniques to Optimal Design of Electric Machines
  3. Design, Failure and Testing of Large Rotating Machine Stators
    Dr. Greg Stone
  4. Modern Drive Application: Issues and Solutions
    Dr. Russell J. Kerkman, Dr. Gary L. Skibinski and Mr. David W. Schlegel

Tutorial 1:
Diagnostics and Control of Electric Machines using Computational Intelligence
Instructors: Mohamed A. El-Sharkawi (UW), Robert J. Marks (UW), Paul Werbos (NSF), Craig Jensen (Microsoft)

Course Outline:

I. Introduction to intelligent systems

II. Intelligent systems for detection

III. Intelligent systems for control

IV. NN demo and test cases

Tutorial 3:
Design, Failure and Testing of Large Rotating Machine Stators
Instructor: Dr. Greg Stone

Stator windings are a key component of large motors and generators. A significant percentage of machine failures are caused by problems in the stator winding. This tutorial reviews the design of stator windings rated 2300 V and above, from a maintenance point of view. A dozen of the most common stator winding failure processes are reviewed for their root cause and implications for time to failure. Finally, about 15 stator winding testing procedures are reviewed, including insulation resistance, polarization index, capacitance (impedance), power factor, partial discharge (on-line and odd-line), surge comparison and various hipot tests. The theory of each test, as well as how to perform and interpret the results, will be presented.

Tutorial 4:
Modern Drive Applications: Issues and Solutions
Instructors: Dr. Russell J. Kerkman, Dr. Gary L. Skibinski and Mr. David W. Schlegel

The evolution to faster power switching devices has enabled the drive industry to significantly reduce drive size and cost while increasing reliability and functionality.

With the reduced losses the maximum carrier frequency has increased to over 20 kHz. The improved current form factor, higher bandwidth current regulators, and sophisticated modulators allow for high performance field oriented controllers and efficiency optimization algorithms.

Faster switching devices have, however, increased the potential negative impact the drive may have on other equipment such as motor and cable insulation, electronic signal integrity, ground protection devices, communications, bearings, sensors etc. This tutorial will present the basic causes, the potential effects on other equipment, and various methods for mitigating the impact of these phenomena on process reliability.

Course Outline:

I. Introduction

II. Rise Time and Motor Overvoltage

III. Corona Voltage

IV. Cable Characteristics and PWM Inverter Interaction

V. Modulators and Motor Overvoltage

VI. Bearing Damage

VII. Communications

VIII. Sensors

rev. 2/4/99