Chris Hobson Posted August 26, 2017 Share Posted August 26, 2017 Hi I am looking for specs for a 50kW off-grid inverter. Sukam the Indian Solar manufacturer has one but I was wondering if anyone has come across any other manufacturers producing a big off grid inverter. Quote Link to comment Share on other sites More sharing options...
___ Posted August 26, 2017 Share Posted August 26, 2017 You can parallel 3 x 15kva Quattros to get to that number... it's going to cost a pretty penny though. Bluenova has a battery you can pair with a 15kva Quattro, they call it the Bigboy 65k :-) Quote Link to comment Share on other sites More sharing options...
Chris Hobson Posted August 26, 2017 Author Share Posted August 26, 2017 Just now, plonkster said: You can parallel 3 x 15kva Quattros to get to that number... it's going to cost a pretty penny though. Bluenova has a battery you can pair with a 15kva Quattro, they call it the Bigboy 65k :-) Cost? Quote Link to comment Share on other sites More sharing options...
___ Posted August 26, 2017 Share Posted August 26, 2017 3 minutes ago, Chris Hobson said: Cost? 5500 Euro for the inverter, so probably around 100k after you've imported it. Times three... I have no idea what the battery costs. Quote Link to comment Share on other sites More sharing options...
___ Posted August 26, 2017 Share Posted August 26, 2017 The FB post says less than $500 per kwh, so presumably the battery is around 430k. So you're at three-quarters of a mill before buying panels :-) Also, I said parallel, but at these levels we're probably talking 3-phase. Chris Hobson 1 Quote Link to comment Share on other sites More sharing options...
Mark Posted August 27, 2017 Share Posted August 27, 2017 12 hours ago, Chris Hobson said: Hi I am looking for specs for a 50kW off-grid inverter. Sukam the Indian Solar manufacturer has one but I was wondering if anyone has come across any other manufacturers producing a big off grid inverter. I would get multiple units and spread the load. Having all the eggs in one basket is a risk especially given the scale of the operation. 3x 20kw with multiple banks of batteries. Maybe even in 2 locations on property for some "insurance" against fire, flood, etc Quote Link to comment Share on other sites More sharing options...
Chris Hobson Posted August 27, 2017 Author Share Posted August 27, 2017 22 minutes ago, Mark said: I would get multiple units and spread the load. Having all the eggs in one basket is a risk especially given the scale of the operation. 3x 20kw with multiple banks of batteries. Maybe even in 2 locations on property for some "insurance" against fire, flood, etc We are spreading the risk already 27 pig sheds each with their own 4-5 kW inverter and the balance as 50kW inverters. The bug bear is the client wants the 50kW as hybrid inverters otherwise I would install grid-ties and be done with it. Mark you looking for a job? We can decentralise it further and give you a 50cc to get between the sheds. Part of the job description is to clean/maintain 350kW of panels (glorified window washer). Mark 1 Quote Link to comment Share on other sites More sharing options...
ghatikar Posted August 27, 2017 Share Posted August 27, 2017 at 50 KW you may be better off with HYBRID PV Diesel - If you have not used I highly suggest using homer to do the Sensitivity / LCOE analysis - http://www.homerenergy.com/ - 30 days is evaluation even SMA has nice calculator with only their products - https://www.sma.de/en/products/planning-software/sunny-design-web.html HYbrid inverters due to high DC currents are much costlier than grid ties. One sunny tri-power - https://www.sma.de/en/products/solarinverters/sunny-tripower-core1.html may be enough and cheaper than supporting full 50 KW with batteries. Critical loads can be offloaded to Quattro or sunny =island Is HYbrid PV diesel an option? what about the night load Quote Link to comment Share on other sites More sharing options...
___ Posted August 27, 2017 Share Posted August 27, 2017 2 hours ago, Chris Hobson said: 50kW as hybrid inverters Why hybrid? Does he want backup when there is an outage, or does he want to do self-consumption, ie store surplus power in batteries and use it when there is clouds/at night? Is the backup requirements the same as the running requirements? The limiting factor is going to be the batteries. I've seen pictures of Infinis stacked 6 deep (2 times 3 really, 3-phase), but the inifni only goes up to 10kva far as I know, so you'd need 6 of them to get to 50. Technically if you want 50 (and not 45) you'd need 6 Quattros as well to make. Once again, I've seen pictures with 6 quattros and a bunch of Froniuses that does that kind of powerlevels. I guess you know which one I'd like to play with, even if we are talking 6-figure numbers here :-) Quote Link to comment Share on other sites More sharing options...
___ Posted August 27, 2017 Share Posted August 27, 2017 Just now, ghatikar said: Is HYbrid PV diesel an option? what about the night load ABB has a hybrid diesel solution. Quote Link to comment Share on other sites More sharing options...
ghatikar Posted August 27, 2017 Share Posted August 27, 2017 2 minutes ago, plonkster said: Why hybrid? Does he want backup when there is an outage, or does he want to do self-consumption, ie store surplus power in batteries and use it when there is clouds/at night? Is the backup requirements the same as the running requirements? The limiting factor is going to be the batteries. I've seen pictures of Infinis stacked 6 deep (2 times 3 really, 3-phase), but the inifni only goes up to 10kva far as I know, so you'd need 6 of them to get to 50. Technically if you want 50 (and not 45) you'd need 6 Quattros as well to make. Once again, I've seen pictures with 6 quattros and a bunch of Froniuses that does that kind of powerlevels. I guess you know which one I'd like to play with, even if we are talking 6-figure numbers here :-) At 50 KW with multiple units, it gets very sensitive to Size and length of cabling both AC and DC due to sharing limitations. Also, the addition is not arithmetical Unless it was an upgrade /addition to existing it is always preferred to have less no of big units. I think Victronhas some thread on the Discuss but I can not find it for now ___ 1 Quote Link to comment Share on other sites More sharing options...
Chris Hobson Posted August 28, 2017 Author Share Posted August 28, 2017 16 hours ago, plonkster said: ABB has a hybrid diesel solution. I'll have a look at this. Our brief was 350 kW panels, 7 inverters and 768 batteries. It is a preliminary budget quote. 16 hours ago, plonkster said: I guess you know which one I'd like to play with, even if we are talking 6-figure numbers here :-) I used 15kVA blue stuff as a basis for the quote. and yes runs to 6 figures. The batteries are a problem in my mind. Quote Link to comment Share on other sites More sharing options...
Chris Hobson Posted August 28, 2017 Author Share Posted August 28, 2017 16 hours ago, plonkster said: Why hybrid? Does he want backup when there is an outage, or does he want to do self-consumption, ie store surplus power in batteries and use it when there is clouds/at night? Is the backup requirements the same as the running requirements? I don't know. This happens when you accept a brief and do not get time to go through it with the client before he disappears to the next important meeting. Quote Link to comment Share on other sites More sharing options...
anotherbrownbear Posted September 12, 2018 Share Posted September 12, 2018 50kW Hybrid? Easy, see file attached. MGS100_Technical_Datasheet_Final.pdf Quote Link to comment Share on other sites More sharing options...
Chris Hobson Posted September 12, 2018 Author Share Posted September 12, 2018 This client wasted incredible amount of my time. We ended quoting for 4 Quattros. Probably the most ill informed engineer I ever met. Quote Link to comment Share on other sites More sharing options...
Colin Posted September 13, 2018 Share Posted September 13, 2018 Solis 50k.pdf Quote Link to comment Share on other sites More sharing options...
Chris Hobson Posted September 13, 2018 Author Share Posted September 13, 2018 8 hours ago, Colin said: Solis 50k.pdf This is a GTI I was looking specifically for a off-grid unit but now it is an exercise in futility. Quote Link to comment Share on other sites More sharing options...
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