Department of Electrical Engineering
Energy and Power Systems
Introduction to
Electric Machines and Drives
Jae-Do Park, Ph.D.
Energy and Power Systems for Electrical Engineering (UC-Denver)
Degree Requirements Flow Chart
EE
Foundation
ELEC 1201-1
Introduction to Electrical Eng.
ELEC 2132/2142-3
Circuit Analysis I & II
EE 3133-3
Electromagnetic Fields
ELEC 3316-3
Linear Systems Theory
ELEC 3164-3
Energy Conversion
ELEC 3724-1
Energy Conversion Lab
Specialty
Foundations
Specialty
(Core Courses in
Power
Engineering)
Graduate
ELEC 4164/5164-3
Electric Drive Systems
ELEC 4174/5174-3
Power Electronic Systems
ELEC 4184/5184-3
Power Systems Analysis
ELEC 4808/5808-3
Renewable Energy Systems
ELEC 4xxx-1
Electric Drive Lab
ELEC 4xxx-1
Power Electronic Lab
ELEC 4444-1
Power Systems Lab
ELEC 4xxx-1
Renewable Energy Lab
ELEC 5xxx-3
Advanced Electric
Drive Systems
ELEC 5821-3
Advanced Power
Electronic Systems
ELEC 5xxx-3
Power Systems Dynamics
and Protection
ELEC 5xxx-3
Advanced Electric
Machinery
ELEC 5xxx-3
Electric Power Quality
ELEC 5xxx-3
Power System Operation
and Control
ELEC 5xxx-3
Practical Electric
Drive Systems
ELEC 5xxx-3
Substations Engineering
Design
Legend
Required
Required lab
ELEC 5xxx-3
Advanced Distribution
Systems
Elective/Graduate
ELEC 5813-3
Energy Systems
Planning
Graduate
Elective lab
Energy and Power Systems Engineering in Electrical Engineering (UC-Denver)
Machines and Drives Course Flow Chart
EE
Foundation
EE 1201-1
Introduction to Electrical Eng.
EE 2132/2142-3
Circuit Analysis I & II
EE 3133-3
Electromagnetic Fields
EE 3316-3
Linear Systems Theory
Machines/
Drives
Foundation
EE 3164-3
Energy Conversion
EE 3724-1
Energy Conversion Lab
Machines/
Drives
Specialty
EE 4164-F3
Electric Drive Systems
EE 4xxx-1
Electric Drive Systems Lab
Legend
Required
Machines/
Drives
Advanced
Required lab
EE 5xxx-3
Practical Electric Drive Systems
EE 5xxx-3
Advanced Electric Drive Systems
Elective
EE 5xxx-3
Advanced Electric Machinery
Elective lab
Graduate
2010 Jae-Do Park
Energy and Power Systems Engineering in Electrical Engineering (UC-Denver)
Machines and Drives Course Diagram
EE 5xxx-3
Advanced Electric
Machinery
EE 3164-3
Energy Conversion
Circuit Analysis
Embedded Systems
EE 5xxx-3
Practical Electric
Drive Systems
EE 4164-3
Electric Drive Systems
EE 5xxx-3
Advanced Electric
Drive Systems
Electromagnetics
Control Theory
Programming
Language
Mechanics
2010 Jae-Do Park
Electric Machines and Drives
Area covers
Mechanical system for electric machines
Power electronics converters
Magnetic circuits
Electric machine modeling
Control algorithms
Drive system design
Commercial drive operation
2010 Jae-Do Park
Jae-Do Park, Ph.D.
Ph.D., Pennsylvania State University, 2007
Expertise includes machine modeling and drive
system design
12 years of industry experience on induction and
synchronous reluctance machine drive
Published 6 IEEE journal and conference
papers, Invented 4 patents
Renewable Energy Club advisor
Member of ECRF at UC Denver
2010 Jae-Do Park
Electric Machines
Electromechanical system
Electrical side
Voltage v, current I, flux-linkage
Electrical Power
Mechanical side
Force f, linear displacement x
Torque , rotational
displacement angle
Mechanical Power
2010 Jae-Do Park
Electric Machines
Classification
AC & DC machines
Rotary & linear machines
Synchronous & asynchronous machines
Brush & brushless machines
More classification can be possible
2010 Jae-Do Park
Electric Machines
Construction
Stationary Stator and rotating Rotor
Built with high permeability material
Whats the advantage of higher permeability?
2010 Jae-Do Park
5W1H: Electric Machine Drives
What
A control system for an electric machine
ASD: Adjustable Speed Drive
VFD: Variable Frequency Drive
VVVF: Variable Voltage Variable Frequency
To control
Position, speed, torque, tension
Voltage, current, power
2010 Jae-Do Park
General Drives
General purpose inverter systems
LG Industrial Systems
2010 Jae-Do Park
Special Drives
Gearless Elevator System
LG-Otis
Flywheel Energy Storage System
Pentadyne Power
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5W1H: Electric Machine Drives
What: Fan/Pump/Blower
60Hz
60Hz
To
N Hz
AC
Motor
Air Flow
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5W1H: Electric Machine Drives
What Elevator
Inverter
Controller
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5W1H: Electric Machine Drives
What Traction
Electric Car
Tesla Roadster
Electric Train
JR East
Hybrid Car
Toyota Prius
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5W1H: Electric Machine Drives
What - Winder
Pay-off
Dancer Roll
Command
Program download
Encoder
Line
Speed
Encoder
Motor
Controller
Take-up
Dancer Position
Inverter
Motor speed
2010 Jae-Do Park
5W1H: Electric Machine Drives
What Windmill
Grid
Generator
Power
Converter
Mechanical to Electrical Energy
Conversion
2010 Jae-Do Park
5W1H: Electric Machine Drives
What Energy storage
Flywheel
DC Bus
AC
Supply
DC
Generator
Inverter
Converter
SW
AC
DC
Motor
Load
Energy
Storage
Charge
Flywheel Energy Storage System
Conceptual Diagram
Discharge
DC Bus
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5W1H: Electric Machine Drives
Where
Industrial
Commercial
Almost everywhere
From a watch to a train
When
You want to control
speed, torque, power, voltage, current, etc
2010 Jae-Do Park
5W1H: Electric Machine Drives
Why
Better performance, efficiency
Cost reduction, less maintenance
Low noise
New applications
Who
Design engineers
Application engineers
Manufacturing/process engineers
2010 Jae-Do Park
5W1H: Electric Machine Drives
How
Power electronics converters
Control voltage & frequency
Using various power semiconductor devices
Mathematical modeling of electrical machines
Complex controllers using DSPs
Microprocessor/Microcontrollers
MMI (Man-Machine Interface)
Communication with various control devices
2010 Jae-Do Park
5W1H: Electric Machine Drives
How Power Electronics Converters
2010 Jae-Do Park
5W1H: Electric Machine Drives
How Power Electronics Converters
Rotating Magnetic FIeld
Induction Machine
2010 Jae-Do Park
5W1H: Electric Machine Drives
How Controller using DSPs
IO expansion board
TI TMS320C6711
DSK board
Controller using
Motorola
DSP56F803
2010 Jae-Do Park
5W1H: Electric Machine Drives
How MMIs
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Practical Problems
Elevator
Torque
Speed
Power
Motor
Car
Torque
CW
Speed
Speed
Car
CW
2010 Jae-Do Park
Practical Problems
Hybrid Car
Gas engine has maximum efficiency at 70%
power. The machines in the hybrid car can
operate as generators. The battery pack could
be charge when:
1) Going downhill (Y/N)
2) Going uphill (Y/N)
3) Breaking (Y/N)
4) Accelerating (Y/N)
* Toyota Prius
2010 Jae-Do Park
Practical Problems
Motions
Which one is a
passenger train
and which one is
a cargo train?
* Thinking Physics
2010 Jae-Do Park
Questions?
