Interactive Power Electronics Seminar (iPES)
This is an educational module dedicated to basic power electronic circuits. The module includes DC/DC converters,
basic diode and thyristor converter systems, AC/DC inverter, space vector modulation and basic signal theory.
In the future there will be minor changes (mainly additions and corrections). The material currently is available
in German, English, Japanese, Korean, Chinese, Spanish and French.
DC/DCConverter Basic Topologies
BuckConverter  (1)
BuckConverter  (2)
BuckConverter  (3)
BoostConverter
BuckBoost Converter
BuckConverter: StartUp with Constant Duty Cycle
BoostConverter: StartUp with Constant Duty Cycle
BuckBoost Converter: StartUp with Constant Duty Cycle
Boost Converter Inductor Current Ripple
SinglePhase LineCommutated Diode Bridge Rectifiers
Ohmic Load
ACSide Inductance / Constant DCSide Voltage
DCSide Inductance / Constant DCSide Voltage
Output Capacitor / Ohmic Load
PhaseControlled Thyristor Converters with Resistive/Inductive Load
Basic Thyristor Converter
SinglePhase FullBridge
ThreePhase FullBridge
SinglePhase HalfBridge / Transformer with CenterTapped Secondary
ThreePhase HalfBridge / DeltaWyeTransformer
PhaseControlled Thyristor Converters
Parallel Connection / Interphase Transformer
Commutation / Converter Equivalent Circuit
Loss of Commutation
Basic Thyristor Converter with/without FreeWheeling Diode
Parameters of Current Commutation (Theory)
DC Drive
DC Drive Supplied by a Controlled Voltage Source
FourQuadrant Converter
SinglePhase Power Factor Correction
BoostType Power Factor Corrector (PFC)
Signal Theory in Power Electronics
Fourier Analysis of a Periodic Pulse Signal
Variation of Harmonics of a RectangularShaped Signal with Duty Cycle
Output Filter of the BuckConverter
Output Current Smoothing of a ThreePhase MainsCommutated HalfBridge Converter
Output Current Smoothing of a ThreePhase MainsCommutated FullBridge Converter
Basics of Moving Local Averaging
Moving Local Averaging / State Space Averaging
SinglePhase PWM Converter
Basics of Pulse Width Modulation (PWM)
SinglePhase PWM Converter
Analysis of ThreePhase Systems using Space Vector Calculus
Transformation of Phase Quantities into a Space Vector
Calculation of the Phase Quantities Related to a Space Vector (BackTransformation)
Space Vector Based Current Control of a SixSwitch PWM Rectifier
Space Vector Based Current Control in a ThreePhase Voltage DC Link Inverter
Resonant Converters
Switching Behavior of a Power MOSFET
Influence of Wiring Inductance on Switching Losses
LC Resonant Circuit StatePlane Trajectory (uZiDiagram)
Basic Resonant Circuit
The following Java applets are part of the Introductory Course on Power Electronics
taught by Prof. Kolar at the ETH Zurich. The interactive and animated applets are
used as aid for teaching in the classroom and are displayed using a laptop and a beamer.
Furthermore, the applets do provide an opportunity for the students to experiment and learn
at home more efficiently.
