Electrical components PVMD Olindo Isabella Delft University of Technology
Learning objectives DC-DC converter 1. Introduction to electrical conversion 2. Electrical components • Switch • Inductor • Flyback diode • Smoothing capacitor 3. Topologies 4. Efficiency of a buck-boost converter DC-AC inverter
Switch (GTO) Gate Turn-Off Thyristors Anode C P 10-100 kHz G N E Gate P D N G Cathode S
Switch (GTO) Gate Turn-Off Thyristors C 10-100 kHz (IGBT) Insulated-Gate Bipolar Transistors G E D (MOSFET) Metal-Oxide-Semiconductor Field-Effect Transistor G S
Inductor Stores energy in the magnetic field Electromotive force + Power Current supply -
Inductor Electromotive force + Power supply -
Flyback diode - + + Power Current Energized inductor supply - - +
Flyback diode Arc across airgap - + + Power Current Energized inductor supply - - +
Flyback diode Current + + - + Power Energized - supply inductor + - -
Smoothing capacitor Smoothed signal Capacitor Load Pulsating signal
Recap Capacitor Load + - Pulsating signal
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