"I don't see how a dump regulator will be confussed by an MPPT regulator or visa versa. " OK, consider this. Your wind regulator is putting out a merry 14.3 volts and your battery
is merrily eating it all up. Now, what does your MPPT controller see when it looks at your battery? 14.3 volts, so it shuts down the solar panel. Unless your battery bank is so hungry, that it is pulling down the "wind voltage" to a lower level. But even then--it is reading that level, and not putting out as much power as it could or should put out.
In some situations I could see that would work, possibly not efficiently, possibly very well if the batteries were eating every watt they could find. In others...I just don't know, I have to suspect one system or the other would be running less than optimally, because it was not reading BATTERY voltage, but reading the other device's output.
Could it work? Sure. Would it be working optimally? I wouldn't bet on it. In the real world, would it still work well enough to keep you charged? Maybe. And 'maybe' isn't a good word for charging
systems, is it?
Dunno. In the limited case that the batteries are fully charged, or there's so much power being generated that you can afford to bathe in it, dump regulators make sense, sure.
But how often does that happen, versus the 40-to-95% discharge area, where you want every erg coming out of every device to go INTO the batteries, before the sun sets and the wind dies? Or, the storm comes, and you have to stow the panels
and feather the wind blades?
I think (and I admit to being underqualified on that front<G>) that the only way to do "one regulator to rule
them all" would be to integrate multiple regulators with one mastermind, which would disconnect them ALL very briefly, perhaps once every couple of seconds, and in that instant take a look at the battery and see what it needed. Then, re-regulate and reconnect them all as appropriate.
This is what the internal regulator in some systems already does, except here we'd be asking it to sense multiple sources and rule
them all in harmony. Shouldn't be hard, but it would require aequate capacity in each section, or a modular design, so that V & A were sensed from each device, and a common disconnect/sense/connect mechanism used to hook them all up to the battery banks. Probably would mean one "brain box" that had the battery connections on it, and maybe a choice of "high" vs "low" power modules for each device, i.e. so folks with lots of toys or just a few toys could buy the appropriate capacity in the modules. Wouldn't make sense to rate everything for 500 watts.
Or maybe there's a smarter way to do it with nifty digital bits these days, wire up everything to an MPPT-type "transformer" that eats all power, allows it to average itself out as magnetic flux, and then feed it back out again in an orderly manner.
Unlike the scene where the man foolishly shuts down the containment unit in Ghostbusters.<G>
It's the need for dump regulators on wind generators that complicates things most, I think. Maybe they need to be shunted to trolling motors instead?<G>