Power Electronics
Homework 1  DUE August 30, 2012
Problem 1: (Problem 1.4 textbook) Consider the circuit of Example 1.5.3. Let us turn the switch
V
on whenever Vac > peak where k is an adjustable positive real parameter. The switch will turn o
k
onehalf
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Figure 6.15 Octahedral plane shown relative to the principal normal stress axes (a), and the octahedron
formed by the similar such planes in all octants (b).
Dowling, Mechanical Behavior of
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3
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Figure 7.7
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Power Electronics
Homework 4  DUE October 30, 2012
Problem 1: (Problem 4.16 textbook) A DCDC converter is shown in Figure 1. Let R = 10 ,
C = 100 F, L is very large, and Vout = 20 0.1 V. What are the duty ratios and frequencies of the
two switching func
Power Electronics
Homework 2  DUE Sept 13, 2012
Problem 1: (modied version of Problem 2.15 textbook) A converter has a single AC voltage input
with amplitude Vin and two switches. When switch 1 is on, the input and output are connected.
When switch 2 is
Power Electronics
Homework 3  DUE October 11, 2012
Problem 1: (Problem 4.1 textbook) A voltage divider provides 1 V output from a 5 V input. The
maximum output current is 1 mA. The resistors are chosen to provide load regulation of better than
1% over th
Power Electronics
Homework 4  DUE October 30, 2012
Problem 1: (Problem 4.16 textbook) A DCDC converter is shown in Figure 1. Let R = 10 ,
C = 100 F, L is very large, and Vout = 20 0.1 V. What are the duty ratios and frequencies of the
two switching func
Power Electronics
Homework 5  DUE November 12, 2012
Problem 1: Consider the design of a classical rectier that produces a 24 V 1% output for loads at
a power level below 4 W. Assume diode drops are 0 V. Choose the appropriate transformer assuming
the inp
Power Electronics
Homework 6  DUE December 6, 2012
Problem 1: (modied Problem 6.2  textbook) Find the total harmonic distortion from a VSI as
a function of the relative phase angle. Plot this function and determine that phase for which the
THD is smalle
Power Electronics
Midterm 1  November 1, 2012
Problem 1: Consider a rectangular switching function, q (t), with duty ratio D. The Fourier series
for this signal is
q (t) = D +
2
sin(nD)
cos(nt n0 )
n
n=1
where is the fundamental frequency and 0 is the ph
Power Electronics
Homework 1  DUE August 30, 2012
Problem 1: (Problem 1.4 textbook) Consider the circuit of Example 1.5.3. Let us turn the switch
V
on whenever Vac > peak where k is an adjustable positive real parameter. The switch will turn o
k
onehalf
Power Electronics
Homework 2  DUE Sept 13, 2012
Problem 1: (modied version of Problem 2.15 textbook) A converter has a single AC voltage input
with amplitude Vin and two switches. When switch 1 is on, the input and output are connected.
When switch 2 is
Power Electronics
Homework 3  DUE October 11, 2012
Problem 1: (Problem 4.1 textbook) A voltage divider provides 1 V output from a 5 V input. The
maximum output current is 1 mA. The resistors are chosen to provide load regulation of better than
1% over th