I'd have to agree with Oztules, especially given that the one pictured isn't all that much different in appearances from what I've got.
Having a hard time swallowing the idea that there's 3 $ digits worth of magic buried in there somewhere, given that I've vaguely mapped out the discrete component single phase version of it, and understand the principles at work on it. 3 phase tends to mix things up a bit when it comes to conversions, but dunno bout all that LOL
That's all there is to this one... no magic tricks, no black box chips... it's asymmetrical because of its intended implement, but that's little more than "details" really. Only thing that makes it even remotely "tricky" is the speed it's designed to run at, requiring everything be super-tight bunched... at the speeds you're looking at using something like this for, there's no real need. Nice thick source/drain paths and a little sinking, pffft no problem.
Side note along those lines regarding this particular board - the supply it comes from is rated 62A on the 12V rail - What you see is nearly what was there... only thing I removed was a little tab with a thermistor attached, to control the fan (externally done); and it only failed because it had months on end of *no* airflow (probably at something averaging half rated load or so). It's intended to sit directly under a fan and uses primarily the rails to wick and spread heat.
That said, I can't say one way or another about suitability for a wind turbine, I'm a solar guy... but put it out there because the premise of the topic is a fit under "ideal bridge".
If anyone is interested, I may sketch it up for my own use anyway at some point... squeaky wheels get the grease. Someone else would have to adapt it for 3 phase, as I have no foreseeable use for such a thing
Either way, the entire supply new is 80 bucks... and has at least 2 other "complete salvage" value sections in it... so IMO, 100+ for a dinky little board..? Well that's just gouging