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Nairaland Forum / Entertainment / TV/Movies / Satellite TV Technology / Solar Energy, A Complement To FTA (2275997 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 Topmost11(m): 4:21am On Oct 15, 2019 |
Thanks all. You have all spoken from your various wealth of experience. A difference of opinion is what facilitate learning. Don't let us have a dogmatic opinion; it doesn't help development. I have read all but have not digested. Someone should pls review the conflicting opinions and find a common ground which you can all still review. If possible and the means available, experiment on the postulations and give your findings. Then we can all update our knowledge. The Einsteins of this world made name by challenging the stats quo. I got here by challenging myself daily. The person that introduced me to inverter technology is now my neighbor. Isnt it funny that he still burn fuel via generator daily while my generator has been idle for some time now yet I have light 24/7. He recently got a sunking 60 for 34K while i built something slightly bigger for half the price for my mum, with your help via your answers. That is the power of an open mind. Pls let's criticize constructively. My 4×150watts panels are currently wired in parallel to a powmr mppt cc and still using the 12v inverter. The yield seem lower than when I was using pwn cc. That was why i contemplated series wiring. But I guess that is due to the incessant rains. If rain is not the culprit, I shall revert to pwm cc for the time being while I brainstorm on what next. "you should try and stick to system voltage, ie 12v panel, 12v CC, 12V INVERTER MPPT, YOU ONLY LIMITING FACTOR IS CC max input voltage" The above is my understanding before all this differences in opinion. PS: Sorry for my long essay |
Re: Solar Energy, A Complement To FTA by dragnet: 6:43am On Oct 15, 2019 |
Topmost11: your powmr is mppt, you should be doing at least a series connection with your panel. 1 Like |
Re: Solar Energy, A Complement To FTA by ojesymsym: 8:25am On Oct 15, 2019 |
I have done quite a couple of solar experiments that are not recommended by the textbooks or engineering principles but this I haven't so I won't argue with you too much. How long has you been using it by the way? I remember when I used to use 1 solar panel, two charge controller for 2 battey set up. You need to know what you are doing to attempt some of these things knowing that things can go wrong and you can loose your equipment. In this case you may even lose power because I think pwm will just clip out the excess. SolnergyPower: |
Re: Solar Energy, A Complement To FTA by tivta(m): 8:34am On Oct 15, 2019 |
Penuelseun:Any issues? Like static sound or lines on the tv? |
Re: Solar Energy, A Complement To FTA by BetaTechnicians: 9:53am On Oct 15, 2019 |
ceaser:The load would be too much, I don't trust the relays in those timers to handle such currents. |
Re: Solar Energy, A Complement To FTA by BetaTechnicians: 9:56am On Oct 15, 2019 |
Can anyone help with the limitations of modified sine wave inverters, real life experiences please, and also compared with ups that are also modified sine wave. Real life user experiences please. |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 11:21am On Oct 15, 2019 |
Topmost11: therein lies your problem, you are treating your mppt as a pwm, that is why your harvest is poor. i suggest you run 2s2p, ie hook up 2 panels in series. then parallel the 2 strings in series. ie you would have 2 strings each made up of 2 strings in series which you then parallel, thus ur CC wud be seeing 24v to 38v, thus enough head room for your CC to truly shine, as thats the sweet spot for it. efficiency upto 90% or so. another option would be to string all 4 panels in series, efficiency of this setup is about 82% or so, what is the Vmax of your CC?, cos that is the determinant of if you can use this option or not. @dragnet. , His subsquent remarks, shows he knows its mppt ![]() |
Re: Solar Energy, A Complement To FTA by Penuelseun(m): 3:49pm On Oct 15, 2019 |
tivta:No issues, been using it for more than 3 years. I use a bluegate ups by the way, I use it to power my 40" led tv, ceiling fan, home theater, decoder at a go and it powers them well. |
Re: Solar Energy, A Complement To FTA by dragnet: 5:25pm On Oct 15, 2019 |
Penuelseun:what model please? |
Re: Solar Energy, A Complement To FTA by dragnet: 5:26pm On Oct 15, 2019 |
earthrealm: ![]() |
Re: Solar Energy, A Complement To FTA by Topmost11(m): 6:52pm On Oct 15, 2019 |
dragnet: "you would have 2 strings each made up of 2 strings in parallel, which you then parallel" Is this what you mean?
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Re: Solar Energy, A Complement To FTA by zeestone99(m): 6:56pm On Oct 15, 2019 |
ojesymsym: The guy never jam pwm controller ![]() ![]() |
Re: Solar Energy, A Complement To FTA by Penuelseun(m): 6:57pm On Oct 15, 2019 |
dragnet:BG-650, an old model 1 Like |
Re: Solar Energy, A Complement To FTA by Topmost11(m): 7:11pm On Oct 15, 2019 |
Topmost11: |
Re: Solar Energy, A Complement To FTA by SolnergyPower: 7:15pm On Oct 15, 2019 |
Indeed! Oga, take your time and take a second look at what I claim. My claim is a personal experience in the last 6 months or so. zeestone99: |
Re: Solar Energy, A Complement To FTA by tivta(m): 7:26pm On Oct 15, 2019 |
Penuelseun:Wow. I thought it was modified sinewave, can you please post a picture of it, I want to get your type. |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 8:08pm On Oct 15, 2019 |
Topmost11: Yeah, exactly! You would hit over 25amps on a good day, if your panels are optimally placed and you are using correct cable size as per distance |
Re: Solar Energy, A Complement To FTA by Penuelseun(m): 8:36pm On Oct 15, 2019 |
tivta:It is modified sine wave |
Re: Solar Energy, A Complement To FTA by zeestone99(m): 10:48am On Oct 16, 2019 |
SolnergyPower: Sorry boss....please show us practical example, this new development interest lot of us. Gracias |
Re: Solar Energy, A Complement To FTA by SolnergyPower: 10:50am On Oct 16, 2019 |
Sir, where exactly in my claims do you need understanding? zeestone99: |
Re: Solar Energy, A Complement To FTA by zeestone99(m): 10:58am On Oct 16, 2019 |
SolnergyPower: I thought you were saying we could go above system voltage using a pwm controller. If yes, I have experimented and all I got was the overload alarm. What type of pwm controller did you use. If no pardon my intrusion pls |
Re: Solar Energy, A Complement To FTA by SolnergyPower: 12:57pm On Oct 16, 2019 |
Overload alarm? You may be talking definitely about something else. What I wrote was, as long as the PWM Charge Controller allows for it, I will always input as much voltage as I can from the PV. This means, for a PWM that allows for up to 50V from the PV, I can do a series connection for two 150W, Voc, 22.05V in a 12V battery bank as against doing a parallel connection. From experience, the series connection has yielded me more harvest than a parallel connection. I have come across MPPT charge controllers that ONLY allow matching PV voltage closely with the battery bank voltage. Like I have always noted, I will always aim at the roof for a PWM as long it is allowed. Thank you sir. zeestone99: |
Re: Solar Energy, A Complement To FTA by zeestone99(m): 1:05pm On Oct 16, 2019 |
SolnergyPower: Yeah pv overload. Interesting to know you have used two panels in series to charge a 12v battery and it worked like an mppt. Please share the pwm controller. I will love to do some experimenting myself. Gracias. 2 Likes |
Re: Solar Energy, A Complement To FTA by Solardepot: 1:40pm On Oct 16, 2019 |
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Re: Solar Energy, A Complement To FTA by Topmost11(m): 4:02pm On Oct 16, 2019 |
earthrealm: Battery, inverter, panel=12v: Controller is 12v/24v mppt. With this recommended connection, won't I be having 24v which is against the system voltage of 12v? Or is it the advantage of mppt? |
Re: Solar Energy, A Complement To FTA by SolnergyPower: 4:23pm On Oct 16, 2019 |
Here is what I have. a. 12/24V Roy Solar PWM b. 4 x 150W ForeSolar Mono Panels in 2S1P c. 16mm cable from panels to CC. About 15m or so d. 12V, 850VA Sukam Inverter e. 2 x 12V, 165Ah PowerCycle Batteries. zeestone99: |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 4:36pm On Oct 16, 2019 |
Topmost11: thats the advantage of mppt, hence why its more expensive, it allows you transmit @ higher voltages, and low amperage...hence you could use smaller cables, also CC starts producing earlier..and stops later too...cos of the voltage headroom. if you doubt it, connect it for 24v and record your max daily and instantenous harvest, then try the 12v config...and compare |
Re: Solar Energy, A Complement To FTA by earthrealm(m): 4:36pm On Oct 16, 2019 |
Solardepot: good news, a perfect challenger to quanta.....i guess ![]() |
Re: Solar Energy, A Complement To FTA by Oshomo12(m): 5:36pm On Oct 16, 2019 |
SolnergyPower: Let me help out a bit. Ur 4*150w=600w @ 12v ABI? So if ur panel orientation and cables are rightly "placed". @eff of 80%, u should not get anything less than 35A at 14.2v. anything less than that, u re running at a very big loss with ur connection. Just parallel the four panels and revert to the house(to share the good news)! 2 Likes |
Re: Solar Energy, A Complement To FTA by Nobody: 5:37pm On Oct 16, 2019 |
SolnergyPower: How do you know that you harvest more? |
Re: Solar Energy, A Complement To FTA by wilfrik200(m): 5:42pm On Oct 16, 2019 |
JUO: Please send me your contact on the email I provided |
Re: Solar Energy, A Complement To FTA by SolnergyPower: 5:57pm On Oct 16, 2019 |
Sir, the installation I am currently monitoring is on a two-storey building and needs a scaffold to access, so I am not planning to go there again soon until a major upgrade. BTW, how did you arrive at 35A @80%eff? Oshomo12: |
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