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Nairaland Forum / Entertainment / TV/Movies / Satellite TV Technology / Solar Energy, A Complement To FTA (2385417 Views)
UPS Back-up, Also A Complement To FTA / FTA Frequency / Cctv Installation A Complement To Fta And Solar Energy (2) (3) (4)
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Re: Solar Energy, A Complement To FTA by zeestone99(m): 7:37am On Nov 27, 2017 |
dapsyra: Thnk u sir 4 doing business with us... |
Re: Solar Energy, A Complement To FTA by pranil(m): 8:55am On Nov 27, 2017 |
Jamzig1: for a single socket, I use this - https://www.aliexpress.com/item/PR10-F-BS-13A-power-metering-socekt-kwh-meter-0-1-3250w-watt-meter-power-recorder/32697027826.html? It has setpoints for power and current both activated independently with timer to prevent abuse I mainly use it to stop my Inverter AC being used in turbo mode ( in turbo they draw 2.6 KW as against 700 watt of normal mode) for the whole circuit at the output of inverter or DB USe an overcurrent relay wired to the AC contactor or a built-in unit https://www.aliexpress.com/item/High-quality-current-limiter-lirait-appliances-0-5A-32A-tutamen-control-switch-demand-limiter-free-shipping/32417613258.html? https://www.ev-power.eu/Measure-Test-Tools-1-1/Current-Monitoring-Relay-PRI-52-AC-0-5A-25A-CE.html 3 Likes |
Re: Solar Energy, A Complement To FTA by olagunju2000: 9:40am On Nov 27, 2017 |
Good day house. Please i need your help to help review my setup as I am getting not up 60% of my installation capacity I have the following 1) 15 pcs 300W mono solar panel (3 in series and 5 parallel) 2) Panel Spec:- VOC = 44.3, Isc = 8.93A, Vmp = 36V, Imp = 8.33A. 3) Based on the connection, Total V= 132V and I= 44.65A(Voc and Isc used in the computation). 4) I have a Master Charge Controller: Max 150V and 80A (48V system) 5) Battery setup: 24pcs of 2V 600A batteries connected in series to produce 48V. 6) The setup was installed 2 months ago. 7) The highest generation seen has been 6.1Kw/day on a sunny day. I leave at Ajah area of Lagos 9) My Depth of discharge has been around 65% until last week when I was advised to use more to see if it will boost the production. I increase DOD to 45 - 50% 10) in Real time, the maximum that I have seen is 2400W. 11) Installation was carried out by a professional. 12) I check for loses, I am only losing average of 100W (comparing power from solar output measured under the solar shed and Controller output) QUESTIONS: 1) my total installation capacity is 4500W (solar panel), out of which I am getting max of 2400W. Is this normal 2) Is there anything wrong with my installation. 3) The power generated has not been sufficient to charge my batteries. Is there a way to improve this Please help |
Re: Solar Energy, A Complement To FTA by Jamzig1(m): 10:35am On Nov 27, 2017 |
pranil:Thanks for the links as usual... The first option is the most suitable for this application...But the limitation is that it can be easily bypassed (I guess) |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 10:38am On Nov 27, 2017 |
olagunju2000: Hello, send clear pictures"cabling,mppt,combiner box,solar panel inclination" for clarity sake ! Cheers 2 Likes |
Re: Solar Energy, A Complement To FTA by makavele: 10:44am On Nov 27, 2017 |
olagunju2000: Speak to zeestone99 (08117398294, 08033913155) Thank me later !!! zeestone99: |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 10:51am On Nov 27, 2017 |
kiekie1: Do not spend your Xmas in darkness ... Call us now ! |
Re: Solar Energy, A Complement To FTA by makavele: 10:55am On Nov 27, 2017 |
zeestone99: |
Re: Solar Energy, A Complement To FTA by olagunju2000: 12:00pm On Nov 27, 2017 |
makavele: Thanks, I have gotten in touch with Zeestone99. He has given me some action items |
Re: Solar Energy, A Complement To FTA by kiekie1(m): 12:16pm On Nov 27, 2017 |
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Re: Solar Energy, A Complement To FTA by makavele: 12:32pm On Nov 27, 2017 |
zeestone99: ... |
Re: Solar Energy, A Complement To FTA by bigrovar(m): 1:31pm On Nov 27, 2017 |
olagunju2000: Number of things could be wrong. The first thing that caught my eyes is the controller. "Master Charge Controller" don't sound encouraging. Is it MPPT? even if it claims to be lots of controllers out there claim to be mppt yet don't mpp nothing. If it is PWM then what you are getting is inline with what is expected given how the panels are stringed. While PWM works best when the solar panel VMP is matched very close to the nominal voltage of the battery bank. MPPT works best when the panel VMP is generally about double the battery nominal voltage. If your controller is actually PWM then it explains the loss. Another thing you might want to check is the cabling, the direction and tilt of the panel, if there are any natural obstruction blocking sun rays. After all this, you might want to check each panel to be sure they are working optimally. It is not uncommon especially with large panel installations for 1 or 2 panels to be completely dead or below per. a weak panel not only brings down the overall output of the string. It can also cause the working panels to short circuit and good bad completely. 1 Like |
Re: Solar Energy, A Complement To FTA by olagunju2000: 2:05pm On Nov 27, 2017 |
makavele: Thanks Makavele, Charge controller is supposed to be an MPPT according to the spec . I will check each of the panels as suggested and cabling as well. One question in my mind is, on a sunny afternoon, if I measure both Voc and Isc; Am I supposed to get values close to the panel spec VOC = 44.3, Isc = 8.93A? |
Re: Solar Energy, A Complement To FTA by makavele: 2:19pm On Nov 27, 2017 |
olagunju2000: Thanks to Bigrovar . . you would never get close to the panel specs . . at most 77%; if you're lucky no matter how the sun shines . . . as a matter of fact; too much sunshine + poor ventilation = too much heat = reduced panel performance 2 Likes |
Re: Solar Energy, A Complement To FTA by olagunju2000: 2:30pm On Nov 27, 2017 |
bigrovar: Thanks for this insight. Actually, the solar panels are in the open like a car port with flat roof. No shade and ventilation should be ok (my thoughts). |
Re: Solar Energy, A Complement To FTA by makavele: 2:37pm On Nov 27, 2017 |
olagunju2000: Still not gonna get past the 77% mark |
Re: Solar Energy, A Complement To FTA by olagunju2000: 2:42pm On Nov 27, 2017 |
makavele: Now I have come to that realization. I should have added more panels to compensate for the inefficiency. Today, I am doing roughly 55%. So many thing to learn |
Re: Solar Energy, A Complement To FTA by makavele: 2:53pm On Nov 27, 2017 |
olagunju2000: 55% is not so bad; depending on weather conditions though. |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 3:02pm On Nov 27, 2017 |
makavele: I disagree with that... 220 Panels 140 + 80 has produced 201 watt peak going to the battery..CC is PWM In July... So he should get close to 100% on bench test 2 Likes |
Re: Solar Energy, A Complement To FTA by olagunju2000: 3:10pm On Nov 27, 2017 |
Dam5reey:Hello Dam5reev, I do not understand the explanation above. Do you mean that if I test 300W panel (Voc and Isc), I should get close to the spec of the panel on a good sunny day? Kindly explain and thanks for your cntribution |
Re: Solar Energy, A Complement To FTA by makavele: 3:14pm On Nov 27, 2017 |
Dam5reey: 201 n 220 about 91% . . was it sustained or instantaneous . . if the former? how long? Also if it's a PWM; i won't believe the numbers except for a high-profile PWM manufacturer . . why? Had one chinko PWM that would always cut off at 31A and stay at 29A. it would try to go over 30A again and cut off . lead me to believe more amps could be delivered .. Only to install a better and trusted CC that had never even registered 25A max. Tested with a multimeter to confirm !!! PWM be giving me false hope ! Thanks 1 Like |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 3:19pm On Nov 27, 2017 |
makavele: The readings were measured with multimeters, Also I mentioned Peak, that was the question he asked... If the panels you bought cannot provide close to it's rated capacity at a bench test, go and change it.... 5 Likes |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 3:24pm On Nov 27, 2017 |
olagunju2000: Yes you should get, up to that about few months ago some guys posted their results for a Month... I can't remember their monikers, Those with 4500Watts setup can post their last month Generation this will clear the air... 2 Likes |
Re: Solar Energy, A Complement To FTA by makavele: 3:30pm On Nov 27, 2017 |
Dam5reey: WHy you dey confuse yaself, Mr Man? You mentioned peak yeah? Did you generate 91% consistently and continuously for say, 10-15 minutes during "peak" sunshine? (i find this hard to believe) Or did you generate 91% for just 1-3 seconds . . which I would term as "peak" generation for the day? (i can still believe this one) So in which context is your "peak" used ? Zeestone99; I am loading for you !!! |
Re: Solar Energy, A Complement To FTA by makavele: 3:33pm On Nov 27, 2017 |
Dam5reey: Generation is generation; irrespective of wattage or panel strength . . . I don't want to look at a full month's statistics to get an answer; because it will only show me "peak" generation for a day . . (which could have been say 95% for just 10seconds) .. which is trash or "average peak" generation for a week/or month or year . . also trash . I am talking about sustained (prolonged) generation during peak sunshine . . which is what I think the OP means? Unless of course, I misconstrued him . . |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 3:35pm On Nov 27, 2017 |
makavele: Please go back to his question initial question peace.. https://www.nairaland.com/390522/solar-energy-complement-fta/276#59001874 1 Like |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 3:39pm On Nov 27, 2017 |
olagunju2000: Makavele, he asked a very simple question... 1 Like |
Re: Solar Energy, A Complement To FTA by makavele: 3:42pm On Nov 27, 2017 |
Dam5reey: Young man, calm down and learn 4rm ya elders . . . I have seen the attached and yes he did get about 99% . . and I bet you it wasn't sustained. If it was, it would be replicated on another day sooner or later; and I couldn't find it. It was instantaneous and that is not what the OP wants to know; unless the OP himself is confused. Looking through his question; he wants to know how much his panels can deliver during good sunshine in order to charge his batteries well If you are giving him false hope of getting sustained 91% and above; I so pity those batteries. SO go back and read what i said about "instantaneous" and "sustained" generation. Shalom. 1 Like |
Re: Solar Energy, A Complement To FTA by makavele: 3:42pm On Nov 27, 2017 |
Dam5reey: And I gave him a real life answer !!! I do not care about his Isc and Voc , Vmp or Imp or whatever. . . he doesn't care about it too . . I only care about the end result of all multiplication = Wattage What he wants to know . . is: if i have 100W panels, can i get close to 100W on a very good day with sunshine aplenty? Simple answer: NO ; realistically ... no need for too much Isc X Voc mathematics. 1 Like |
Re: Solar Energy, A Complement To FTA by Dam5reey(m): 3:51pm On Nov 27, 2017 |
makavele: You are still not getting it... How do we then know he bought real 300watts panels and not a fake 300watts at the back? I use a 1kw inverter, but it cannot power power a load of 800W continuously then you tell me it's 1kw You are practical person yet you use multimeter to measure your current instead of using the sun intensity to calculate... You have not answered his question correctly... That was why I disagree... 5 Likes |
Re: Solar Energy, A Complement To FTA by makavele: 3:58pm On Nov 27, 2017 |
Dam5reey: Let me break it down for you sir . . What do you mean sun intensity to calculate . . ? LOL You be confirmed olodo I need real life answers . . . So i go to my lounge; hook up a multimeter and see what is coming in . . . How simple can it get . . I don't even take into account what the Charge Controller is telling me, i check voltage and current and resistance manually . . . That's an overkill for practicality . . . Back to you: Let's be honest and serious for once . . . Even with a Yachi, Yingli, Solarworld, CanadianSolar or brazilian whatever . . in real life specs; you cannot get 91% of panel specs . . That is the answer he needs. So if we go back to why I told you all to discard the manuals, now you see it. Under STC, a 100W panel should produce at least 99.9W of power . . . but if you are basing your judgements on STC, you are headed for an epic world of failure or regrets. He asked a question, f*ck the STC; give him a real life answer . . . if he gets above that, good . . ; if he doesnt, then he won't be disappointed. 4 Likes |
Re: Solar Energy, A Complement To FTA by makavele: 3:59pm On Nov 27, 2017 |
P.S.: I am not also practical; I am highly controversial . . . Y'all should start getting used to it . . . |
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