Hmm. It would have taken me a minute to figure out the IGBTs too. Once you realize what they are, it's obvious that they are just weirdly drawn IGBTs, but at a first glance they look more like sideways tea kettles....
That's a truly bad schematic. Why do they all seem to be drawn in Eagle?
No reference designators, some parts are missing values even (the comparators/drivers/whatever they are, the IGBTs, the
second power symbol from the left never mind - it's the only one, the diodes, the transformers and the fuse). I'm not even 100% sure what the signal/power path is here. How ghastly.