1200V and 400A IGBT
1200V and 400A IGBT
(OP)
Hi,
I've been doing some research on finding a single IGBT module for a motor drive application that can operate at 1200V and 400Amps.
Any ideas?
I've been doing some research on finding a single IGBT module for a motor drive application that can operate at 1200V and 400Amps.
Any ideas?





RE: 1200V and 400A IGBT
Thanks!
RE: 1200V and 400A IGBT
By the way, do you mean 'operate' on a nominal 1200V link, or rated at 1200V absolute maximum? Two different things!
------------------------------
If we learn from our mistakes,
I'm getting a great education!
RE: 1200V and 400A IGBT
Those are Absolute Maximums.
1200V - collector-emitter voltage
400A - collector current
RE: 1200V and 400A IGBT
RE: 1200V and 400A IGBT
RE: 1200V and 400A IGBT
RE: 1200V and 400A IGBT
There are also switching losses. Roughly the switching losses can be approximated for a turn on/turn off cycle by
Psw = (B+)(I)(Tsw)(Tfreq)
If the B+ is 800 V the switching period is 50 usec and the switching time is 200 ns
Psw = (800)(200)(0.2 x 10^-6)(50 x 10^-6) = 640 Watts
Roughly 1000 Watts need to be dissipated in the Heatsink. If then one allows a 50 degree C rise in the heatsink, the heat sink needs a thermal resistance of no more than
Delta T/Power = 50/1000 = 0.05 Deg C/Watt
I'd look at heatsinks available from R-Theta.
RE: 1200V and 400A IGBT
You will definitely need a fan on the heatsink, unless you go to more sophisticated systems with liquid-cooled heatsinks and an external heat exchanger. At this power level, you should still be able to extract enough heat using a conventional heatsink with forced air flow unless you have a very high ambient temperature or need to enclose the unit in a sealed enclosure.
------------------------------
If we learn from our mistakes,
I'm getting a great education!
RE: 1200V and 400A IGBT