Monlo:

Nope,since there will always be energy loss,mind you energy efficiency is never 100%,but you can use an mppt cc to maximize your wattage output.RE rules,one love all.

battleaxe:
@bodejohn, dmerciful, pranil, all etc.

Is it possible to get 130W from a 130W solar panel?

Thanks.

battleaxe:
@bodejohn, dmerciful, pranil, all etc.

Is it possible to get 130W from a 130W solar panel?

Thanks.

bigrovar:
theoretically yes it can.. under standard condition where sun is at the right glare and right angle to the panel and the temperature is just under 25C. When with all this in place (very rare) u still need to have the right wiring .. even with all these there is inverter inefficiency to consider...

bigrovar:
... the rule is to assume 77% of your panel capacity has the capacity u get in real life use after u remove things like heat coefficient, inverter efficiency and position of the sun. I usually just times panel size by 0.77 to get a useable figure I can use when sizing my system.

richmon74:


It's such a pity that in your 15yrs of electrical engineering practice you have always been limited to environments where energy conversions from SOLAR PANELS stay within 100%.

But in my 2 months of renewable energy apprenticeship I av installed 12 of 255w solarworld solar panels at Unity road in Lekki in Lagos (a very easy place to locate in case anyone wants to chexk it our) which is by calculation 3060w and the Outback FM80 charge controller records a Maximun Wattage output from it to be 3654w as shown in the pictures below. Or maybe the charge controller is faulty or I can't read the digits very well.

Maybe I need a better explanation to that readout

Barezzi:

Interesting thoughts...
I am currently in the process of upgrading my setup, but torn between ac coupling it with a grid-tie inverter or buy a hybrid inverter.

Can you post a block diagram of your setup?

richmon74:


It's such a pity that in your 15yrs of electrical engineering practice you have always been limited to environments where energy conversions from SOLAR PANELS stay within 100%.

But in my 2 months of renewable energy apprenticeship I av installed 12 of 255w solarworld solar panels at Unity road in Lekki in Lagos (a very easy place to locate in case anyone wants to chexk it our) which is by calculation 3060w and the Outback FM80 charge controller records a Maximun Wattage output from it to be 3654w as shown in the pictures below. Or maybe the charge controller is faulty or I can't read the digits very well.

Maybe I need a better explanation to that readout

Saipro:


Heh heh heh. That's an amusing thing to quote. I 100% understand what richmon74 is saying. I think I'll sum it up as a wrong choice of words and ... well ... tempers. He sounds kinda inflammed ... but I could be mistaken - I offer my apologies in advance. It's true no system will offer you more than 100% efficiency much less 100% yield. The problem is in looking solely at the output and not the mechanics. Indeed, no solar panel is capable of 50% output at the moment. Even 25% is an overkill. The argument is about the total power output versus the rated power output. Once more, I could be mistaken but solar cells are pretty inefficient but ... we have lots of free sun so almost any inefficiency (so long as there's enough space and support for the panels) is acceptable. So, if you see a 200W panel generating 250W, consider the other variables.

By the way, some reputable companies, in order to protect their reputation, quote the minimum specs on their panels. One could almost argue they're under-rating their panels. Like Solarworld and Canadian solar. Then again, I believe that should be the norm, to guarantee customer satisfaction.

Caveat: Should I have offended anyone at all with my post, I apologise. I expect no reprissals, please. I truly am rusty and haven't dusted my books in a while but it is to my understanding that not much of the fundamentals have changed. Thank you.

EDIT: I wish to not have my head being bitten off so I'll state here that higher efficiency experimental cells exist but nothing of the sort commercially. Thank you once more

DUNKA:
Goodday have you been able to do the upgrade?

kiekie1:
Myhome solar panels super promo ;

150w mono-40000 poly-35000
200w mono-55000
250w mono-68000,poly-62000
300w mono-75000,poly-70000


Joy solar panels;;;
200w mono #55000
260w poly #65000
320w poly #75000
phocos PWM controllers :10a #9500
45a #70000 80a #100000


Valid till 30/09/2016

kiekie1:


NOTE: We buy bad or condemned 200A deep cycle batteries at #11,000 .. Call us now !

RipVanWink:


sounds interesting, for those in lagos, how do u do it, inspect and pay etc.

abunafiu:
Alhaji Saipro, how u dey sir.

we both have been enjoying our systems. I am enjoying my 3kw poly system. wish I had discovered this earlier.
I must confess, 70% or 80% hmm even 150% efficiency doesn't matter again.
all I see now is 1pm 59v absorption and 3pm float.
what's else do I need.
When last did I crack my head to do energy calculations.. Except for a prospective clients.
Currently enjoying Game of thrones season 6.
it's 7.30pm here in Ilorin.

RipVanWink:


congrats for your going solar, 16 units of 6v 430ah trojan battery??!!. omo no be beans.
errrrm, i dont know how you would take this, but i think you shud pay more attention to ur wiring/setup.
spend a lil more and make your cabling neater, the other pic u posted of ur 16 trojan batts, was really really uncool, wires going here n there, n then this ur sitting rm/tv setup, a lil trunking and flat panels/wood would give the setup a more aesthetic look.
pls i beg you, dont replicate same in your new house

Unionised:
Dear all,
I am about purchasing APS Inverter 3.5kva plus 4 pieces of 200ah batteries.
To add solar panels later.

Any advice? Caution? Better options?

My expected bill is as follows:

Inverter 138k

Battery 90k times 4 equals 360k

Rack/Stand 15k

Installation 40k

Total - 553k

Stop me before I make a mistake.

Note: just for my beloved TV and 14 energy saving bulbs a maybe a fan or two.

Total load less than 1,000w.

DUNKA:
An high end inverter I.e magnum,sma,exceltech,froniius,outback etc would be best but in a lower range Prag,voltron, power light etc will serve.

Unionised:


So APS is a no no?

How much would a high end with same spec cost?

DUNKA:
Still your choice bro just gave u my own opinion which may not be correct. An High end inveter with the current dollar rates 700k and above.

DMerciful:
But whats the advantage of a high end inverter? He is not running a hospital with pace makers or a recording studio where interference/noise is not wanted. With 700k you can go far with ur going green project. Inverter is just a converter instead get a normal inverter(Indian inverters are pretty good) with good charging system and you're good. With his 4 batteries and if he maintains 50% DOD and install a desulphator(about 10k) his batteries will last long. Alternative power should be cost competitive else won't be worth it. Some of these american inverters are expensive due to the cost of production/american pride and not because they are magical. It is what it is.

DUNKA:
Just my opinion and he asked for the best but you know very well why there are high end inverters. Be rest assured there are good lower priced inverters but as you know most of the Chinese, Indian and Korean inverters are fragile and if you load more than 50% of their rated capacity you will know why high end inverters cost as much as they do

I have named brands that have good user feedback the choice is ultimately his for whatever decision he makes

DMerciful:
I use Mopower inverter(same as sulkam more or less) 1.5kva. Been using it for 1.5yrs now n sometimes t power my freezer or fridge with it n even my washing machine. My batteries are still going strong. So if it can run these loads without issues then what else? Btw its sine wave n its less than 50k now. I actually bought it 40k

Unionised:
Dear all,
I am about purchasing APS Inverter 3.5kva plus 4 pieces of 200ah batteries.
To add solar panels later.

Any advice? Caution? Better options?

My expected bill is as follows:

Inverter 138k

Battery 90k times 4 equals 360k

Rack/Stand 15k

Installation 40k

Total - 553k

Stop me before I make a mistake.

Note: just for my beloved TV and 14 energy saving bulbs a maybe a fan or two.

Total load less than 1,000w.

RipVanWink:


congrats for your going solar, 16 units of 6v 430ah trojan battery??!!. omo no be beans.
errrrm, i dont know how you would take this, but i think you shud pay more attention to ur wiring/setup.
spend a lil more and make your cabling neater, the other pic u posted of ur 16 trojan batts, was really really uncool, wires going here n there, n then this ur sitting rm/tv setup, a lil trunking and flat panels/wood would give the setup a more aesthetic look.
pls i beg you, dont replicate same in your new house

DMerciful:
I use Mopower inverter(same as sulkam more or less) 1.5kva. Been using it for 1.5yrs now n sometimes t power my freezer or fridge with it n even my washing machine. My batteries are still going strong. So if it can run these loads without issues then what else? Btw its sine wave n its less than 50k now. I actually bought it 40k

DUNKA:
unionised please what sort of batteries are you using?

bigrovar:


very similar to my setup. In my case I use the sulkam falcon plus inverter rated 1200W (1.5kva @ 0.8 power factor).. The battery monitor I have between the inverter and battery reads a no idle load of 25w. So far so good the inverter is doing fine. My defining load is a 175 Liter LG freezer with start up surge at close to 800w and running power at 130w. What I like about this inverter is that it comes with a battery temperature sensor which allows it to do temperature controlled charging...

The downside is that the max voltage it can charge my battery is at 28.8v which is pretty low for a floaded acid battery.. however since I just use it as a bulk charger and still have my charge controller has my primary battery charger.

DMerciful:
I use Mopower inverter(same as sulkam more or less) 1.5kva. Been using it for 1.5yrs now n sometimes t power my freezer or fridge with it n even my washing machine. My batteries are still going strong. So if it can run these loads without issues then what else? Btw its sine wave n its less than 50k now. I actually bought it 40k

efuro:
kiekie1 I wish I have power to pencil ur name down for national award like M.O.N you love this great country, also u love ur business.
nice one to buy back new batteries so we actually loose nothing going green energy. God bless u. God bless all the gurus here. I love this forum.