EE 528
Homework for Week 8:
Power Electronics
Fall 2014
Voltage fed full-bridge circuit analysis (100 p).
The converter shown below operates in the continuous conduction mode except at one end of the duty
cycle range, where it reaches the DCM boundary. In
EE 528
Power Electronics
Homework for Week 13:
Fall 2014
Magnetic circuit / ripple steering analysis (100 p).
The boost converter shown below has an inductor which is the magnetizing inductance, LM, of a
transformer, TX1. It consists of two windings, in t
EE 528
Power Electronics
Fall 2014
Week 4 Homework: Semiconductor losses and efficiency, equivalent circuit analysis
Buck converter (100 points)
Q1
L1
Vg
D1
C1
R1, V
Figure 1
A buck converter is implemented with a MOSFET, Q1, and a diode, D1. The MOSFET h
EE 528
Power Electronics
Homework for Week 12:
Fall 2014
Resonant converter analysis (100 p).
The converter shown below operates near the fundamental resonant frequency of the resonant circuit
having transfer function H(s). The circuit is lossless. The tr
EE 528
Power Electronics
Homework for Week 6:
Fall 2014
Flyback converter with input filter (100 p).
+
+
Figure 1.
a)
b)
c)
d)
1
Derive M(D,K), the voltage conversion function of the converter in discontinuous magnetizing
inductor current conduction mode.
EE 528
Power Electronics
Fall 2014
Homework for Week 3:
Part I.
Cuk converter circuit analysis with losses (100 points)
+
L1
+
V
V1g
C1
D1
L2
+
+
Q1
C2
R, V
R1
+
Figure 1.
L1 has series loss resistance RL1, L2 has loss RL2, on resistance of Q1 is RON and
Input Filter Design
Chapter 10
8/28/2014
EE 528 - Fall 2014 - Chapter 10
1
Subjects treated
Conducted EMI
The Input Filter Design Problem
Effect of an Input Filter on Converter Transfer Functions
Impedance Inequalities
Buck Converter Example
Effect
Regulator design
Chapter 9
8/28/2014
EE 528 - Fall 2014 - Chapter 9
1
Regulator design
Typical specifications:
Effect of load current variations on output voltage regulation
This is a limit on the maximum allowable output impedance
Effect of input volt
Converter Circuits and Transformer Isolation
Chapter 6
8/28/2014
EE 528 - Fall 2014 - Chapter 6
1
Circuit manipulations
8/28/2014
EE 528 - Fall 2014 - Chapter 6
2
Inversion of source and load
8/28/2014
EE 528 - Fall 2014 - Chapter 6
3
Inversion of source
The Discontinuous Conduction Mode
Chapter 5
8/28/2014
EE 528 - Fall 2014 - Chapter 5
1
Subjects treated
1. Origin of the discontinuous conduction mode, and
mode boundary
2. Analysis of the conversion ratio M(D,K)
3. Boost converter example
4. Summary of r
Steady-State Equivalent Circuit
Modeling, Losses, and Efficiency
Chapter 3
8/28/2014
EE 528 - Fall 2014 - Chapter 3
1
Chapter 3 subjects
3.1
3.2
3.3
3.4
3.5
3.6
8/28/2014
The dc transformer model
Inclusion of inductor copper loss
Construction of equivalen
Principles of Steady-State Converter Analysis
Chapter 2
8/28/2014
EE 528 - Fall 2014 - Chapter 1
1
Principal approximations
Ideal converter no losses
Pin Pout
Vin I in Vout I out
MV M I 1
Voltage and current conversion ratios
Vout
I out
MV
, MI
Vin
I
for the Analysis of Power MOSFET
Losses in a Synchronous Buck Converter
Method
Toni Lopez and Reinhold Elferich
Philips Research Laboratories, Aachen, Germany
devoted to the nominal operating conditions, which
involves periodic steady state waveforms.
Gen
Understanding and Applying Current-Mode Control Theory
Literature Number: SNVA555
UNDERSTANDING AND APPLYING CURRENT-MODE
CONTROL THEORY
Practical Design Guide for Fixed-Frequency, Continuous Conduction-Mode
Operation
by
Robert Sheehan
Principal Applicati
Design Note AN 2013-03
V1.0 March. 2013
Forward Converter Design Note
IFAT IMM PSD
Anders Lind
Single Transistor Forward Converter Design
Design Note AN 2013-03
V1.0 March. 2013
Edition 2013-03
Published by
Infineon Technologies Austria AG
9500 Villach, A
Analysis of the SEPIC Converter
Ben Schaeer, Dennis Gilbert
bms@pdx.edu, dennis@pdx.edu
Group II
ECE-445
February 16, 2010
1
Analysis Summary
i1
i2
=
I2
=
V1
=
=
v2
=
= Vg
V2
=
v1
D 2 Vg
D2 R
D Vg
D R
I1
=
D
D
Vg
DVg Ts
L1
DVg Ts
L2
D2
D
D2
D
D2 Ts (C1 +
Continuous-conduction-mode SEPIC converter with
low reverse-recovery loss for power factor correction
J.-M. Kwon, W.-Y. Choi, J.-J. Lee, E.-H. Kim and B.-H. Kwon
Abstract: A continuous-conduction-mode SEPIC converter with low reverse-recovery loss is
prop
EMI and Layout Fundamentals
for Switched-Mode Circuits
Material after R.W. Erickson
8/28/2014
EE 528 - Fall 2014 - Chapter 15
1
EMI and Layout Fundamentals
Introduction
Idealizing assumptions made in beginning
circuits
Inductance of wires
Coupling of
Transformer Design
Chapter 15
8/28/2014
EE 528 - Fall 2014 - Chapter 15
1
Transformer Design
8/28/2014
EE 528 - Fall 2014 - Chapter 15
2
Basic Constraints
8/28/2014
EE 528 - Fall 2014 - Chapter 15
3
Maximum flux density
Constraint #2
8/28/2014
EE 528 - Fa
EN 206: Power Electronics and Machines
Boost, Buck-Boost, Cuk Converters
Suryanarayana Doolla
Department of Energy Science and Engineering
Indian Institute of Technology Bombay
email: suryad@iitb.ac.in
March 19, 2014
Prof. Doolla (DESE)
EN 206: dc-dc conv