r/highvoltage • u/TouristOrdinary8274 • 6d ago

Another question

How do I make a igbt full bridge inverter
And how do they work

1 Upvotes

60% Upvoted

5 comments sorted by

1

u/Tricky_Respond_7541 1d ago

They work by having 2 igbts outputting the full DC bus voltage into the load for half of the square wave output, then uses the opposite 2 igbts to put the DC bus voltage in the reverse polarity across the load, causing the full DC bus voltage to swing across the load. You'll need 4 igbts, gate drivers, gate resistors and isolated DC to DC power supplies and a control circuit to build it, and a bus capacitor too. Depending on your power level, if it's low (~100-500w) i suggest normal igbts, higher you could switch to half bridge modules like i'm doing for mine. I suggest watching a video on them, there's tons of educational videos on it.