Power Electronics
48 articles • Complete guide
See firing angles and waveforms behave intuitively – perfect for EEE power lovers. Interactive rectifier, inverter & PWM simulators, virtual labs, quizzes coming soon – start learning now!
Curriculum
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Power Devices
Power diodes, SCR, TRIAC, MOSFET, IGBT
Power Diode
Reverse recovery characteristics, Schottky diodes.
Thyristor (SCR)
Two-transistor analogy, latching/holding current.
SCR Protection
Snubber circuits, di/dt, dv/dt protection.
SCR Triggering
R, RC, UJT triggering circuits.
TRIAC and DIAC
Bidirectional control, dimmer applications.
Power MOSFET
VDMOS structure, safe operating area.
IGBT
Insulated Gate Bipolar Transistor structure, tail current.
GTO
Gate Turn-Off thyristor.
Wide Bandgap Devices
SiC and GaN, benefits over Silicon.
Rectifiers
Half-wave, full-wave, bridge, controlled rectifiers
Uncontrolled Rectifiers
Half/Full wave diode rectifiers, R/RL loads.
Freewheeling Diode
Effect on waveform, energy recovery.
Phase Controlled Rectifiers
Single phase half/full converters.
Semi-Converters
Asymmetrical control, power factor improvement.
Three Phase Rectifiers
3-pulse and 6-pulse converters.
Dual Converters
Four quadrant operation.
Source Inductance Effect
Commutation overlap, voltage drop.
AC Voltage Controllers
Phase control, integral cycle control
Choppers
DC-DC converters, buck, boost, buck-boost
DC-DC Converter Basics
Duty cycle, voltage transformation.
Buck Converter
Step-down converter analysis, continuous/discontinuous mode.
Boost Converter
Step-up converter analysis.
Buck-Boost Converter
Inverting topology.
Cuk Converter
Capacitive energy transfer.
Chopper Control Strategies
PWM vs Frequency Modulation.
Multiphase Choppers
Ripple reduction techniques.
Inverters
DC-AC conversion, PWM, VSI, CSI
Voltage Source Inverters
1-phase half/full bridge.
Three Phase Inverters
180 degree and 120 degree conduction modes.
PWM Techniques
Sinusoidal PWM, harmonic reduction.
Space Vector Modulation
Concept of reference vector synthesis.
Current Source Inverters
Auto-sequential commutated inverter.
Multilevel Inverters
NPC, Cascaded H-bridge overview.
Switch Mode Power Supplies
Flyback, forward, push-pull topologies
Introduction to SMPS
Linear vs Switching supplies, efficiency.
Flyback Converter
Isolated buck-boost derived topology, transformer.
Forward Converter
Isolated buck derived topology, tertiary winding.
Push-Pull Converter
Transformer utilitization, center-tap.
Half and Full Bridge SMPS
High power applications.
Resonant Converters
ZVS, ZCS switching.
Motor Drives
DC motor, induction motor, BLDC drives
DC Motor Drives
Speed control using controlled rectifiers and choppers.
Braking of DC Motors
Regenerative, Dynamic, Plugging.
Induction Motor Drives
Stator voltage control, V/f control.
Vector Control
Field Oriented Control (FOC) basics.
BLDC Motor Drives
Brushless DC motor operation and commutation.
Stepper Motor Drives
Unipolar vs Bipolar drive.