Transcript DC-AC Converters (inverters)

DC-AC Converters (inverters)
• The function is to convert a DC fixed
voltage into a symmetric AC output of fixed
or variable frequency and amplitude
• Applications:
– variable speed AC drives
– Uninterruptable AC power supplies
– Single phase and 3 phase applications.
Principle of operation (halfbridge inverter)
Output voltage is v0=vA-vO
Single phase bridge inverter
3phase DC-AC converters
(inverters)
The state of switches
6
1
2
3
4
5
|
6
1
2
3
4 etc.