Math Notes - Math notes for power electronics and other areas of electrical engineering. My favorite math tables all in one place.
Homework Assignments - Homework solutions will be posted here 1-2 days after they are discussed in class.
HW#1 - Ch 2: 1, 2
due Tues, Sept 1
HW#2 - Ch 3: 8
due Tues, Sept 8
HW#3 - SPICE simulation of a rectifier circuit. [Problem
statement. Spice V8.0 Schematic.
Library.]
due Thurs, Sept 17
Note that the circuit does not become a "half-wave"
rectifier
until the second diode is added. Simulation
results.
Worked solutions to some rather lengthy problems in Ch 3: prob3_1 prob3_2 prob3_3
HW#4 - Ch 5: 1, 3,
4,
6 due Thurs, Sept 24
HW#5 - Ch 5: 16, 11
due Thurs, Oct 1
You may use a 21-ohm load resistor in place of the 1-kW constant-power
load. (SPICE challenge: How would you implement the 1-kW
constant-power
device?) Find only the power factor and peak-peak ripple voltage
for 4 different filter capacitor values. Find the peak value of
the
in-rush current (the peak ac supply current at start-up with zero
initial
capacitor voltage). Discussion
question: In your opinion,
which
value of filter capacitance is optimum? Give reasons why you have
that opinion.
Here is my implementation of the 1-kW
Constant Power Load device.
Test 1 - to cover material through chapter 5, closed book, one
page of notes, plus "math notes" Thurs,
Oct 8
Sample copy of a previous test.
Answers: #1 (a) Io=15A, (b) 2nd harm = 10.3Arms, (c) fund =
4.2Arms so total current = 18.7Arms, (d) Pbattery = 375W, (e) Presistor
= 1739W; #2 (a) resistive case, Idrain=20A; inductive case, Idrain=10A,
(b) Vds transitions between 0 and 100ns, (c) Vds transitions between
100 and 200ns, (d) Eon = 300uJ, (e) Pon = 30W at 100kHz; #3 (a)
Commutation is the process of transferring current flow from one
circuit loop to another, (b) u = 1.45ms (at 60 Hz), (c) Vo =
600.7V.
HW#6 - Ch 6: 1, 3,
5,
6
due Thurs, Oct 22
HW#7 - Ch 6: 12, 13
due Thurs, Oct 29
HW#8 - Ch 7: 2, 3,
8,
9
due Tues, Nov 10
HW#9 - Ch 7: 13, 14,
18,
19
due Tues, Nov 17
Test 2 - to cover material through chapter 7, closed book, one
page of notes, plus "math notes" on Tues, Nov 24
HW#10 - Ch 8: Special
Problem due Special Problem Solution
Final Exam - Closed book, 2 pages of notes plus "math notes"
- Tuesday, December 15, 2009, 12:30 - 2:30 pm
Last Updated: Nov 17