I have an old windmill (KISS) from my days being a boat hippy, and I'd like to use it in my solar setup. Because why not, free power. BUT it puts out +-12v AC current, turned into 12v DC by a rectifier, and the rest of my system is 48v. Can this still be used, maybe with one of those golf cart 12-48v converters or with some other device? Or is it now completely useless?