So I had put this project on hold here for sometime due to some other things coming into play. I am getting back at it with hopes of finally getting it up and running as a learning system to build on.
So I thought I would just try to revive this older thread, and hopefully get some more input to glean from on top of what I already got.
As this has been on hold most has stayed the same. I don't think I ever mentioned that this was going to be a combined system of solar and the wind generator.
The panels I have consist of 8 185w panels with a VMP of 36.9, VOC of 44.75, IMP of 5.014, and ISC of 5.54. It was suggested to me to do 4 sets of two panels into a combiner box, and onto one input breaker of the MPPT in the MM5000 I have. So this works out to around 74volts 5ish amps per string combined for 74volts 20ish amps total. I don't seem to find a temp coefficient % on the panel label, but did find on Midnight Solar's web page a chart they use for temp considerations. I'm taking a pretty worse case scenario and saying in WI we could see a full sun day at -40F in winter. Our 100 year record low is -50F, and that is far north from where we are at in the state. The chart shows using a multiplier of 1.25 on the VOC number. So in my case the VOC would be almost 90*1.25=112.5v
So I did mention in the one post that I bought a working used 5k inverter from someone. It's the Advanced Energy MM5000. The manual shows 120 input max. Beacon power bought Advanced energy out, and when Beacon made the M5 (very similar to the MM5000) they lowered max to 110. The inverter being multi-mode has the MPPT built in so should I even be thinking about hooking it up, or go with a different MPPT and just use the inverter portion of the MM5000? Directions for either model don't go into that type of application. Was going to use the MM5000 as stand alone, solar charging/inverting, no grid connection.
As far as batteries. At the caution of more than one person saying newbies trash there first set of batteries, Im decided to go with GC2 series batteries bought a local big box store, (Menards or Costco) for a starting set rather than the RS batteries. Something I am confused on though is the rather vague manual for the MM5000 makes next to no mention of battery selection other than saying out of the box it is configured to manage a 48volt bank of sealed maint free lead acid batteries, and the GC2 batteries are not maint free, and I don't know if this is going to make a difference. Is it in the fact that it would be a different amount of stages to the charging cycle?
Then onto the whole diversion thing which I started this thread with. So If my mind is grasping this right, being set up this way I will probably have next to no times that I will be diverting anything. It' only going to be those rare occasions of high wind, wind that would take the turbine above absorption voltage of what 59 or 60vdc maybe? I would have to make sure that the TS45s would not divert anything below that or the Mppt in the inverter will never finish doing it's job. Also if both are charging at the same time I am assuming the Mppt on the solar would just recognize it's target values sooner than later and cycle, and the wind would just keep charging (if it could) until the dumps kicked in. I also am assuming this would be much like an equalization stage for the batteries if the voltage was that high. Can you over equalize a battery?
I'm still a little confused about weather it would be better to use one of the TS 45 controllers in diversion or two. Morning star suggested using two in a staged method with no more than a .2 differential in steps. That value was at 12 volts, so x4 for 48=.8v ?
Sorry this got so long. I wasn't trying to write a novel. Just wanted it to have all the info.
David