Overview of AC-DC & DC-AC Converters Pavol Bauer Learning - PowerPoint PPT Presentation

Overview of AC-DC & DC-AC Converters Pavol Bauer

Learning objectives • What are the possible topologies for AC- DC & DC-AC converters for both single and three phase AC systems? • How are these power converters operating?

Single-Phase Diode Rectifier 2      V 2 V 0.9 V  dc,av ac,in ac,in v dc,av i dc,av v ac,in

Three-Phase Diode Rectifier      ab a b      bc b c      ca c a 3      v V 2 V 1.35 V  dc,av dc,av ab ab i dc,av    ab bc ac

Single-Phase DC-AC Inverter – Half-Bridge

Single-Phase DC-AC Inverter – Half-Bridge S 1 t T T 2

Single-Phase DC-AC Inverter – Half-Bridge S 2 t T T 2

Single-Phase DC-AC Inverter – Half-Bridge V o i V o in i 2 o V t  in T T 2 2

Single-Phase DC-AC Inverter – Full-Bridge V n o   v v v an a n    v v v v   o ab an bn v v v bn b n

Three-Phase DC-AC Inverter V n o

Single-Phase DC-AC Inverter – Full-Bridge

Three-Phase DC-AC Inverter

Summary v dc,av i dc,av v ac,in v dc,av i dc,av    ab bc ac