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solar sizing

PV-Sizing für MPPT 150/45 + 6 x Trina Solar Vertex S 400Wp

Moin,

es gibt bereits viele Threads zum Sizing der MPPTs aber keiner gibt mir "wirklich" eine belastbare Aussage.

Warum werden beim MPPT Calculator keine Warnungen ausgegeben, dass man die Nenn-PV-Leistung aufgrund der System-Voltage-Beschränkung gar nicht richtig ausfahren kann ? Oder verstehe ich da etwas falsch ?


Die TSM-400 DE09.08 haben folgende Daten

Power Tolerance-PMAX (W) 0/+5

Maximum Power Voltage-VMPP (V) 34.2

Maximum Power Current-IMPP (A) 11.70

Open Circuit Voltage-VOC (V) 41.2

Short Circuit Current-ISC (A) 12.28

Module Efficiency η m (%) 20.8


TEMPERATURE RATINGS

NOCT(Nominal Operating Cell Temperature) 43 °C (±2 K)

Temperature Coefficient of PMAX -0.34 %/K

Temperature Coefficient of VOC -0.25 %/K

Temperature Coefficient of ISC 0.04 %/K

[image]


Der MPPT Calculator spuckt mir für eine bspw. 3P2S Config unter STC eine Stringspannung von 102,6 @ STC aus. Wenn´s heiß / kalt ist beim Strom / bei der Spannung genug "Luft" für den Regler.

Allerdings - so verstehe ich es - muss ich nun die Systemspannung von 48 Volt (MP-II + Pylontech Akku Pack) x Strom der 3S2P Config nehmen ??? (48V x 23,4 A = 1.123,2 Watt) , welche der Laderegler "vom Dach holen" kann ? Also gehen 50 % der möglichen 2.4 kWp der 6 Stk. Trina´s ins Nirvana bzw. können nicht "verarbeitet" werden ?

Bitte klärt mich auf - scheine hier ein Brett vorm Kopf zu haben ... vielen Dank !

pv-willi87 asked
lifeingalicia answered ·

2 Answers

New solar installation

Hi everyone,

I hope you can help me complete my research please, I have done a lot, but to the honest I'm not sure if that's the right setup for me, as there are so many possibilities of setup, and I'm not sure if I have all the components or too many.

I want to install at home 2 solar panels of 175wh, with a Lifepo4 Eco-worthy 12 V 100 Ah battery.The objective is to power my TV (250w) 5h/day, and/or laptops (150w) & USB chargers for phones (50w).

As none are critical, I don't need to alternate with the grid, I can simply unplug from the solar system and plug into the grid easily if no power is available.

I might evolve in the future with 2-3 extra panels.

What I think I need is:

  • 2x BlueSolar 175w mono
  • 1x SmartSolar MPPT 100/20
  • 1x MPPT WireBox - MC4
  • 1x Lifepo4 100Ah 12v
  • 1x Smart Battery Protect
  • 1x SmartShunt
  • 1x Phoenix Inverter VE.Direct 500VA
  • Cables
  • Cupboard

I appreciate a lot in advance your help and support!

Regards,

Mike


mikebe asked

0 Answers

Pairing panels with 150/70 smart solar mppt

Good day, I am looking at adding some panels to my house.

I am however struggling to understand the mppt charge controllers ratings from Victron data sheet.
https://www.victronenergy.com/solar-charge-controllers/smartsolar-250-85-250-100

I am looking at putting 6 * 460w panels.
Voc= 50.01

Vmpp= 42.13

Configuarion would be (2x3) so we would be running at Voc = 150.03 and Vmpt= 126.4

With a Smart Mppt 150/70 charge controller.

In the manual, it says the MAX solar voltage is 150 (Absolute max in bracktes). Now I need to try and understand. Does that mean I can run this panesl on this unit? My understanding is that the mppt controller when running wouldn't ever really let the voltage get that high.

I know Victron is generally pretty good at under specing In their data sheets and over-delivering in the product.

Do I run any risk with this setup?

dylan-hyslop asked
dylan-hyslop commented ·

1 Answer

data from Victron Shunt to built system

I put in the shunt to get real data before just guessing. so i have some good data but not sure how to turn this data into sizing the right system for my camper. is there a good calculator out there that I can plug thus data into so I know what i really need?

chadd-warwick asked
kevgermany answered ·

1 Answer

Mix Match Solar components

Hi All ,

I have existing components , thrown in with a recently purchased boat. Unfortunately the components are a mix match of different manufactures. I hope to glean advice on how to install to make this system work .

Eventually I will upgrade to all Victron . But for now I have to make this work .

Component list :

- Victron BlueSolar MPPT 150 I 70 -Tr charge controller

- Xantrex Freedom invertor

- Xanbus System control panel SCP FGA 809 0921

- 8 Renogy RNG 100D SS 100 WATT SOLAR PANELS

- XANBUS AUTO GENERATOR START

Any advice will help .

Diagrams and pictures say a 1000 words .

Thank You Kindly

Joe

wind-sun asked
wkirby answered ·

1 Answer

Upgrading a solar flex 200 on a Springdale travel trailer

Have a 200watt panel on the roof and a Victron 15amp charge controller with two 24 group lead acid batteries. Looking to upgrade to eventually run the whole camper and the roof ac unit. It’s a 30 amp trailer. Not sure where to start. I’m trying to learn as I go. I would Imagine adding a 30w charge controller/ inverter would be a great place to start? I currently don’t have a inverter installed. Suggestions on how to proceed with upgrading ?

jlw201 asked
jlw201 edited ·

0 Answers

Correct sizing of solar panel for float charging

I am going to add a solar panel to my boat just for providing float charge to my starter battery (12v 240ah) and bow thruster battery (24v 240ah). I will use a Smartsolar 75/15 controller and an Orion 12/24 to step up to the 24v battery.

My question is this: what current do I need the panel to provide to enable float charging of these batteries? I'm think a 115w panel will provide typically 8 amps in the sun but rather less most of the day and, of course, nothing at night.

Not worried about bulk charging - the alternator will do that and these batteries will only discharge at start or when the alternator is running

thanks

Rob

rob-dean asked
kevgermany answered ·

2 Answers

Victron Smartsolar 100/30 - Overpaneling with these panels?

Can I use 2x of these panels in series on a Victron Smartsolar 100/30?

Polycrystalline STC rated at 260w
Peak Efficiency 15.76%
Number of Cells 60
Imp 8.5A
Vmp 30.7V
Isc 9.01A
Voc 37.8V
NOCT 45.7°C


offroad asked
kevgermany commented ·

1 Answer

Do I need a DCDC charger using just a solar MPPT?

Do I need a DCDC charger using just a solar MPPT?

4WD canopy and I want to try 100% solar charging without using the car alternator

Battery is a single 110ah lithium battery

Solar panels have yet to be purchased but I want to buy a single fixed panel approx 350W, hardwired, and a 180W blanket. When I run them both, via a switch I expect to run them in series as I understand this is the most efficient option for unbalanced panels.


Is there a 'perfect' sizing for a Victron MPPT and panels?

Peter asked
kevgermany commented ·

3 Answers

PVsyst Simulation

Hi All,


Have any tried simulating the energy yield of the system using the PV system with Multiplus, Bluesolar charger on the pvsyst ?

Earl asked
Kendall commented ·

1 Answer

PVSyst Victron OND files

Hi all, seems there's is no such info available (OND files) to upload Victron products data base to PVSyst. It turns that there is a lot of demand on those products but is not possible to run simulations with out data.

alan-gonzalez asked
Kendall commented ·

0 Answers

Exceeding MPPT wattage limit

Yes, I know this is related to other questions/posts, but I need some clarity. I have four 340 watt (Hyundai HiS-S340Ti) panels, and 1120 ah 12 volt DIY battery (LiFePO4) on & in my travel trailer. My inverter/charger is the Victron MultiPlus II 120x2 12 volt, the charge controller is a Victron MPPT 150/100, and pretty much everything (except for the DIY batteries/BMS) is being managed by the Victron Cerbo GX. Yes, I wish I could have gone with a 24 volt system, but the MultiPlus II only comes in 12 volt, at this time - Victron, are you listening? With the four panels in full/direct sunlight in Arizona in mid March, I'm making 7.5 kwh per day, and consuming around 7 kwh/day - yeah, don't judge me :). I have the panels in a 2s/2p configuration. I want to add two additional panels, since it was my original plan and the cables are already up there - two of the six panels were destroyed in shipping. But, I'm concerned about the max wattage limitation of the MPPT (1450 for a 12 v system). I realize I'll only be clipping/exceeding capacity at the peak of the day when the sun is high in the sky provided I'm in a very clear and sunny environment - and that it a real possibility from time to time. Most of the time, it will stay under that - especially on cloudy days (excluding cloud edge effect), and in places where I have some blockage. Currently, at the peak of the day in AZ, I'm generating just over 1000 watts - Vmax around 85 volts. I just want to be able to keep the system breaking even, or providing a net gain, when I'm in the forest and/or experiencing a lot of clouds. At present, like I mentioned, I'm making only slightly more (about .5) kwh more than I'm consuming in an almost ideal solar generation environment. That said, how big of a risk of destroying something would I be taking by adding the two additional panels in a 2s/3p array? I'm considering getting/making a cover for the extra two panels, when I feel there might be a risk of exceeding capacity, but I'm sure I might miss/forget to put it on occasionally. So, again, how much of a risk would I be taking to add the two additional panels? How fragile are these MPPT charge controllers? Do they frequently burn out when input exceeds the max wattage?

lightful-mind-vet asked
lightful-mind-vet commented ·

2 Answers

Combining different size solar panels on camper

Hi all!

I currently have 2x 175W solar panels from Victron on the roof of my camper (Vmpp = 19.4, Impp = 9.03, Voc = 23.7, Isc = 9.89). I have them in series connected to a 100|30 MPPT from Victron. I have limited space on my roof but would like to extend my grid with one or two 55W panels (Vmpp = 18.8, Impp = 2.94, Voc = 22.9, Isc = 3.22). What would be the best way to connect them to my grid?

I understood that It is not advised to mix different panels - especially in series (high-efficiency loss), but parallel should work (with only a slight loss), right? Or am I missing something? Could you help me sort out the right method in case of:

  1. 2x 175W + 1x 55W
    Can I put all the panels in parallel and still run the same MPPT controller, or do I need to put the single 55W panel on its own controller. If so, which one should I go with (hopefully able to use with the same app).
  2. 2x 175W + 2x 55W
    Should I parallel them all or serie-parallel (175Ws and 55Ws separated) and run them on the same MPPT controller, or do I need to run both sets from their own controller? If so, which one should I go with (hopefully able to use with the same app).

I highly appreciate your help.

Cheers,

Joy

durovenia asked
kevgermany commented ·

1 Answer

2 x 350w 12v flexible solar panels

Hello

I am about to buy 2 x 350 12v solar panels for my boat to charge my house batteries.

[image]

I have no idea what I am doing but I assume I need to buy a regulator & would also like a shunt.


should I just buy the biggest regulator Victron sell ?

I’ve been caught a few times with flat house batteries so I want to get lots of solar to keep them charged & charge them fast when flat.


my boat is a 27ft sea ray. It currently has 2 x 100ah house batteries but I will probably upgrade these as well .


I have read about working out how many amps the boat uses by testing everything 1 by 1 . But not done that yet. Should I do that first ? Or just get lots of big stuff?

Thanks

Byron

businessjett asked
JohnC answered ·

2 Answers

solar array advice

Hi just wondering what would be the best solar array to put on my boat.
i want to put 4 panels on the rear of my boat it has a 12volt dc power system.
i have a Victron SmartSolar MPPT 150/70-Tr series up panels no problem.
please has anyone got some suggestions

rod-clark asked
wkirby answered ·

1 Answer

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