Iowa
State University
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Course Objectives |
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Catalog listing:
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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. |
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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.)
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Topic |
Objectives |
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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. |
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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. |
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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. |
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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. |
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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. |
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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. |
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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. |
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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. |
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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. |
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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. |