Iowa
State University
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Course Objectives |
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2009–2011 Catalog
listing:
EE 303, Energy
systems and power electronics. (3-0) Cr. 3.
F.S. Prereq.: Math 267, Physics
222. Credit or registration in EE 224 and EE 230.
Structure
of competitive electric energy systems. System operation and economic
optimization. Mutual inductance, transformers. Synchronous generators. Balanced
three-phase circuit analysis and power calculations. Network calculations and
associated numerical algorithms. Two-port circuits. Voltage regulation.
Resonance and power factor correction. DC and induction motors. Power
electronic circuit applications to power supplies and motor drives. Electronic
loads and power quality. Nonmajor graduate credit.
Supervisor: Dr. Dionysios Aliprantis
Course Objectives: (Note: number in
parentheses indicates the number of 75-minute classes dedicated to the topic.)
|
Topic |
Objectives |
|
Three-phase circuit
analysis (6) |
Apply
per phase analysis in performing power calculations for balanced three-phase
circuits using actual and per unit quantities, for both delta- and
wye-connected loads. Identify one-line diagram from 3-phase circuit and
vice-versa. |
|
Mutual inductance
and transformers (2) |
Apply
Faraday’s law to develop mutual inductance in coupled circuits. Identify
current-flux directional relation using dot convention for ideal transformers.
Use turns ratio in computing voltages, currents, and powers. Relate
electrical characteristics to equivalent circuit, and use circuit in
analysis. Identify three-phase transformer connections and their
applications. |
|
Per unit analysis
(3) |
Transform
per phase and three-phase circuit quantities from Standard International (SI)
units to per unit, and vice versa.
Perform change of base for per unit quantities. Analyze power systems using the per unit
notation. |
|
Electric power
generation and machine controls (3) |
Perform
steady state analysis of three-phase synchronous generators using phasor
diagrams and the relations between power factor, leading/lagging, excitation
level, current angle, reactive power generation, loads, and capacitive versus
reactive loads. Identify basic control and feedback concepts related to main
electrical control systems. |
|
Electric power
transmission (3) |
Relate
electrical characteristics of an overhead transmission line to a lumped
parameter, pi-equivalent model; compute power flow across a transmission
line, and use the strong coupling between real power flow and angular
separation, and between reactive power flow and voltage magnitude, to assess
power flow; identify power transfer limitations. |
|
Power flow analysis
(3) |
Form
the admittance matrix from the network data, obtain the impedance matrix from
inversion, and use them to compute nodal current injections from node
voltages or vice versa. Develop nodal power injection equations and solution
procedure. |
|
Economic dispatch
(2) |
Apply
the Karush-Kuhn-Tucker (KKT) conditions in solving multivariable constrained
optimization problems. Solve the economic dispatch problem (a nonlinear
equality and inequality-constrained optimization problem), and identify the
economic significance of the Lagrange multipliers. |
|
Distribution
systems and power quality (2) |
Use
two-port networks to perform distribution circuit voltage regulation and
efficiency calculations. Perform power factor correction calculations for
large industrial loads, and relate to resonance. Identify causes and effects
of voltage sags and waveform distortion. Analyze waveform harmonics using
Fourier series. |
|
Power Electronics
(2) |
Identify
the current-voltage characteristic for a thyristor, GTO thyristor, MOSFET,
and IGBT and their relative speeds and power handling capabilities. Describe
applications in AC/DC, DC/DC, and DC/AC conversion circuits. |
|
Induction motor
drives (2) |
Perform
steady-state calculations for induction motor operation in terms of applied
voltage, currents, slip, rotational speed, and torque, and identify the
relationship between the speed-torque characteristic of the induction motor
and a speed-torque characteristic for typical loads. Identify
voltage/frequency speed control techniques. |