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mppt smart solar

PV_ Insel / Heizstab Regelstrategie / SPS Kommunikation

Moin,

seit drei Jahren läuft mein Halbinsel-Setup, basierend auf:

6kWp PV,

Multiplus 5000,

2x smart Solar 250/65

BMV702 und

ca. 30kWh OPsZ Batterie (Hoppecke)

sehr erfolgreich.

Ich habe Venus GX auf einem Raspberry Pi laufen und mein Monitoring hat nach anfänglichen SD-Karten Problemen nun seit über einem Jahr gut funktioniert.

Nun hat man ja immer neue Ideen und, mehr aus Lust an der Sache als auf Basis wirtschaftlicher Erwägungen, habe ich mir nun weitere 3,3 kWp auf einer Dachfläche installiert, die nach PV schreit.

Ich habe bereits vor einiger Zeit einen 48V DC- Heizstab (1500W in zwei Stufen je 750W) in meinen Pufferspeicher für Heizung und WW-Bereitung installiert. Direkter Anschluss an der Batterie über 2 Schütze. Hintergrund ist meine Pellets Heizung, die an warmen Sommertagen zur Brauchwassererwärmung läuft uns damit mein Wohnzimmer weiter aufheizt.

Da ich generell meine Heizungssteuerung auf SPS Basis neu aufsetzen möchte, möchte ich natürlich eine Regelstrategie für die Heizstäbe programmieren.

Ich wende mich an das Forum , da ich möglichst mit der einfachsten der vielen möglichen Lösungen starten kann.

Meine Bedürfnisse:

Datentransfer vom Raspberry Pi ( Venus ) oder den Einzelkomponentenauf die SPS ? (Siemens Logo oder S7, ich habe auch noch einen Wago 750 controller rumfliegen, aber ich würde lieber bei der Siemens Range bleiben.)

- Hier sind folgende Werte wichtig.

MPPT-State (Smart solar Charger)

Batterie Spannung (BMV)

ggf. Netzeinspeisung des Multiplus. Dies ist aktuell möglich, wenn die Anlage jedoch ohne Netzanschluss betrieben wird, ist das keine Option.

Grundsätzlich ist es interessant zu wissen, wann die Solarladeregler nicht alles aus den Modulen herausholen, was aktuell geht. Andererseits kann man auch den Batterie SOC nehmen und ein Zeitfenster festlegen, in dem theoretisch noch die Sonne scheinen könnte. Was ich nicht will ist der Betrieb der Heizstäbe aus der Batterie sondern lediglich (hauptsächlich) aus überschüssiger Solarenergie.


Die einfachste Regelung wäre eine Relaiskontakt am MPPT, der mir sagt, wann er mehr rausholen könnte. Dann könnte ich eine gewisse Zeitspanne für den Heizstab vorsehen. Wenn das Relais in der Zeit nicht abfällt, könnte ich die zweite Stufe auslösen und so lange laden, bis das Relais abfällt.

Gerne würde ich aber in Form eines kleinen Brain-Drain Eure Meinungen hören.


Beste grüße,

Mathis









matteng asked
thomasw-1 edited ·

4 Answers

Very hot MPPT

we have two 150/60 MPPTs side by side both connected to the same size array of panels 3S4P total Voc is 99V one is cool to touch the other is extremely hot but still working have checked all connections and are tight

bomber asked
Elimac commented ·

5 Answers

Gel Battery Storage - use MPPT or Multiplus

I have twelve new 110AH Victron Gel batteries for a 660AH 24V battery bank, I'm keen to look after them carefully! The bank is charged either by solar via a MPPT 100/50 or a Victron Multiplus 24V 3000W 70A.

I am about to store my boat onshore in Greece for the winter (6-7 months). What is the best way to leave my Gel batteries powered with the MPPT or Multiplus? I ask because I note the Multiplus has a storage mode whereas the MPPT does not.

dcrisp asked

0 Answers

Smart Solar MPPT VeCan and VEdirect connection

Hello My MPPT 150/85 is connected to Venus GX with VECAN bus

Can i connect it with a VEbus in the same time so i can remotely control it?

redsam asked
redsam edited ·

2 Answers

Can the inverter RS smart solar work without battery ?

Hello,

My question is can the rs smart solar 48v/6000 invert power from the solar panels to the grid without a battery pack connected ?


second question, how does this device know if your house needs power or it needs to store the energy in the battery or sell power to grid ?(gx device with current clamp ?)


kind regards bram

bramo0 asked
Alexandra answered ·

1 Answer

Victron 100/20 charges but batterymonitor says it’s discharging

[image]

It’s Hi! On my boat - when charging through shore power my battery meter shows the charge - when charging via solar and my victron smart charger 100/20 even though I have an input from let’s say 50w / 4amps the monitor says I am discharging and the battery amps drop instead of rise… What could that be?

hellolstk asked
Matthias Lange - DE answered ·

1 Answer

Bug Report: Smart Solar Charger MPPT 100/20 - MPPT gets confused when solar irradiance drop suddenly

Smart Solar MPPT100/20; the solar MPPT output fails to track the incoming solar irradiance on occasions and takes a while to recover and return to normal operation.

I was watching the MPPT behaviour during the mostly sunny day (as can be seen by the Grid PV inverter data) but then the occasional cloud dropped the solar irradiance the Victron Smart Solar stopped being smart, got confused and dropped its power output to near zero even after the solar irradiance had returned.

My grid inverter had a small drop in power output for a short time but the Smart Solar MPPT100/20 took a while. On the second occurrence, I needed to isolate and reconnect the PV breaker for the Smart Solar to start to work again. Note the first dip in output power in the afternoon, on the grid Fronius Inverter a very slight dip in power, while the smart solar's output dropped very significant. The second major dip in power output I was watching and was when that I needed to turn the PV breaker off and on to get the smart solar back working. It does seem that major changes in solar irradiance (which is normal) causes the MPPT to get confused, it does get going again without any intervention but with the penalty of some loss of charge energy compared to the Fronius Galvo 2.0 inverter performance. The data for both systems was using a Venus GX, logged setting 15 minutes.

I hope this gives sufficient information to be able to find the cause of the glitch in performance.

Regards

[image]

[image]

raymiller asked
raymiller commented ·

1 Answer

Changement de smartphone

Bonjour,
Je possède une petite installation solaire pour un usage personnel. J'ai installé l'ensemble des équipements et, tous fonctionnent très bien. Le problème que je rencontre est que j'avais installé le system avec un smartphone et depuis j'ai dû en changer. Avec le nouveau téléphone, je n'arrive pas à me connecter avec 'victron connect" via le bluetooch, à mon matériel, MPPT 75/10. J'ai essayé de désinstaller la liaison sur l'ancien appareil, je désactive bien mon wifi pour la connexion avec mon bluetooch, mais, rien n'y fait. Si vous pouvez m'aider, j'ai essayer de poser la question à mon revendeur, mais je reste sans réponse de sa part.

Merci de votre aide.

Cordialement

Michel

bazm asked
bazm answered ·

3 Answers

Bluetooth locking up at 20% on load MPPT

I have two MPPT 75/15 smart solar.

Since yesterday one is stopping Bluetooth connection at 20% level

Same with the battery sense.

only one MPPT is still working and shows that both other are in the network and working.

But I can not reach them, which is a shame, because I have to change some settings.

Software issue? Even after a reset the issue is not gone.


dpa asked
skippyupover answered ·

2 Answers

BUG!!! MPPT 450/200 detailed history identical each day

Love this new MPPT, but not impressed with the detailed history, is this a bug? I highly doubt I've had the exact same yield every day.... etc... have rebooted my ipad pro and remains the same. Version of VictronConnect is v5.47, firmware on MPPT is 1.04 (bootloader 1.02).

Thanks

Jen

[image]

jjbond asked
jjbond edited ·

5 Answers

Lost all confidence in my settings

Here are my basics:

4 100W panels in series/parallel

4 Duracell EGC2 (Deka GC-15) in series/parallel

BMV-712

SmartSolar MPPT 100/30

This is in an RV - no grid. We live in it.

After I rearranged where things were mounted my SOC on the BMV-712 was reset to --

I've been waiting to sync the SOC back to 100% but I am unable to disconnect everything for 12 hours to verify the actual battery voltage. In the meantime, my system has never left the bulk state of charging, in spite of multiple mostly sunny days.

Current BMV-712 settings are as follows:

Capacity: 460Ah

Charged voltage: 14.3V

Discharge floor: 50%

Tail current: 4%

Peukert: 1.27

Charge efficiency: 85%

Current threshold: 0.10A


Current MPPT 100/30 settings are as follows:

Absorption: 14.6v

Float: 13.9v

Temp compensation: -18mV/C


Do any of these settings look off?

dixonge asked
dixonge answered ·

4 Answers

Camper electric; combining Multiplus Mppt and Orion smart DC-DC

Campervan electrics

I am currently rebuilding a Fiat Ducato van into a campervan. For the electrical system we want to use a 230v fridge, a roof fan, Led lights and some smaller accesoires such as usb chargers etc.

A rough estimate of powerusage:


Watt

Hours p/d

Wh

Ah @12v

Fridge 230v

20

24

480

40,0

Usb

14

1,4

19,6

1,6

Lights

20

3

60

5,0

Fan

35

6

210

17,5

Laptop/bikechargers etc.

90

1

90

7,5

Waterpump

100

0,5

50

4,2



Total

909,6 Wh

75 Ah

Adding losses, I estimate a bit less than 100Ah/day.

Charging

  • Multiplus 800VA
  • Orion DC/DC smart 18A or 30A
  • Mppt 75/15 with +- 200Wp solar

Storage

The intended use of the camper van is to travel around, stay a day or to and then move again. so alternator charging and solar should be most of the charging required. Going with a multiplus is a nice to have, as adding a charger later would require a lot of components if I buy a separate inverter.

I am still looking into what I can afford,100Ah lithium sounds great, but 220Ah AGM is also reasonable for our uses. Due to a smart alternator a DC/DC charger seems needed anyways, so all should be easily set up for both chemistries. We’d prefer using a 12v system, as this is commonly used.


Do you have any remarks on this schematic?

(Apart from the not displayed safety on the 230v AC, and the non-calculated wire gauge.)

[image]

My question;

Can I combine the Multiplus, orion smart and mppt without a shunt or GX device or is this not advisable? As far as I can tell this is mostly for monitoring?

The multi and orion won't interfere with the ignition switch used, so it is mainly the communication between the MPPT and other chargers that could be problematic?

Thanks in advance!

Bram

bram1 asked
Kevin Windrem answered ·

3 Answers

Simultaneous Charging, Orion and SmartSolar MPPT
After hours of searching, I cannot seem to find a clear answer surrounding simultaneous charging using the following two devices in parallel:
- SmartSolar MPPT Controller - 75|15
- Orion-Tr Smart DC-DC Charger Isolated - 12/12 |18


My questions are as follows:

  1. How can I configure both chargers to simultaneously OR individually charge a 100ah Lifepo4 battery?
  2. Would a great SmartShunt or 'Smart Battery Sense' be necessary to make this work effectively? Would it help? (even though I believe the SmartShunt/Smart Battery Sense will only communicate with the SmartSolar MPPT Controller.)


From my own research, it seems like the Orion and SmartSolar will not be able to charge simultaneously due to the lack of VE.Smart support for the Orion. https://www.victronenergy.com/media/pg/VE.Smart_Networking/en/ve-smart-product-compatibility.html
They cannot communicate with each other, nor can the Orion receive battery voltage data from a Victron SmartShunt/Smart Battery Sense.


repadventures asked
Bob K edited ·

3 Answers

New SmartSolar MPPT 100|20 not charging in full sunlight as well as old PWM charger

I replaced a Renogy PWM charger with a SmartSolar MPPT 100|20 charger and in full sunlight, the old PWM charger was charging at the same voltage (13.5V) but almost 2 amps more current (I have 3 PVs (two 100w and one 160W) with open voltage around 20v and a single 105AH 12v LiFePo battery).

The PWM was at 100% (PV voltage same as battery) while the MPPT determined a PV of 15.3V was best. I noticed in the morning, the MPPT ramps the PV voltage between 15.3 and 18V (to determine the best PV operating point?). Is the 15.3v floor (~1.8v greater than the battery) the lowest that the MPPT can work into the 13.5 battery voltage, and that the PWM works better as the PV's best operating voltage is below 15.3? If so, then would connecting the PVs in Series help?


mgotcha asked
mgotcha answered ·

3 Answers

MPPT 75/15 wrong wattage and turning off

MPPT 75/15 smart solar with ~70 Ah LiFePO4 and a couple 20W solar panels... only used for light loads (charging phones, LED lights, laptop occasionally). It's a rig for my camping trailer, but right now it's on my balcony and it's been working fine for a 18 months years. I used it a bit heavier in recent days charging laptop, but battery voltage at 13.1 v and no indication it should be problem.

With only a couple watt LED attached, the load keeps randomly flipping off every minute or so. Does the same with no load. Have separate volt meter on battery and voltage solid at 13.1 v. Tried Always On mode and still the same result.

Additionally (problem at same time I assume), the charge from the solar panel makes no sense... it's telling me I have up to ~75 watts of solar right now, though it's grey out with just 2x20w panels = it's a miracle!! To confirm, MPPT says right now charge current = ~3A, but I have a seprate shunt and tells me more like 0.5A charge (which is normal / expected / correct for a grey day).

Have disconnected power, reset to defaults... any other ideas?

archean1 asked

0 Answers

hi I have a victron multiplus and a 150/85 smart solar, priority charging

hi I have a victron multiplus and a 150/85 smart solar, priority charging, its on canal boat in the uk, its cnnected to a shoreline. but i would like to set it so if its sunny it will use the solar as much as i can to save on my electricity bill. could anyone help :-)

dazo1984 asked
JohnC answered ·

2 Answers

Temperature sensing with the MultiPlus II GX and SmartSolar MPPT

I am looking at getting a 48V MultiPlus II GX. This has 1xVE.Direct port.
Was going to pair this with a SmartSolar 150/35. Communicates via Bluetooth and VE.Direct.

The MPPT will be close to the batteries but they are AGMs and I was thinking it would be ideal to have a battery temperature sensor connected.

The MultiPlus II GX should ship with a temperature sensor.

My questions:
1. If the MPPT is connected to the MultiPlus II GX via VE.Direct, will the temperature sensor of the MultiPlus II GX control the MPPT the same as if a temperature sensor was connected to the MPPT?

2. If the answer to 1 "no" - how would I approach monitoring battery temperature and voltage ideally with this setup to control both the MPPTs charging and the MultiPlus II GX's charging?

I can use the Bluetooth Smart Battery Sense to feed the information to the MPPT, but the MultiPlus II GX doesn't have BT. So then would I need a BT dongle for the MultiPlus II GX as well? And this would use the single VE.Direct port, so I assume I'd also need a powered USB hubs and at least two USB to VE.Direct cables? Those are a lot of adapters and cables just to monitor temperature simultaneously...

Or I could use the Smart Battery Sense to control the MPPT, and the MultiPlus II GX temperature sensor to control it?

Thanks for the help, let me know if any more information is required.

milbank2450 asked
klim8skeptic answered ·

1 Answer

MPPT 75/15 - Consumption - why is consumption high when there is no load?

Hi all,


I am new to solar and need some help. I have a simple solar set up two 300w panels, victron MPPT 7/15, victron phoenix 24v 250 inverter and two 140ah AGM batteries in series. Attached to the MPPT load I have a USB charger to power a mobile phone. I also have a blue tooth dongle attached to the inverter to link to the phone / app.

I have a breaker in between the panels and the MPPT and fuses between the MPPT and batteries and between batteries and inverter - all on the live wire.

When everything is off - no load on either the USB or inverter (inverter is switched off) the Victron app is showing consumption of 50Wh.

[image]

[image]

The system ahs been running for around 2 months. Initially consumption was no more than 40wh but in last week or so it has been over 100wh (but with load - laptop / two monitors c100w - 140w).

Questions I have are:

1. Is this normal / typical?

2. If not normal what could be causing it? Problem with MPPT / batteries / connections / panels / fuses?

Any help / advice greatly appreciated.

andrew-aikman asked
tomwarden commented ·

3 Answers

ESS Throttling MPPT's to zero, when Grid Feed In is active.

Hello ALL!

(I'm a newbi in posting to this community, please be kind to me
If I doesn't "present" my problem in the short, clear and detailed way. :-)
)

I see a lot of posts related to MPPT's that are holding back there power.
But none of them seems to be an exact match for my problem.

In my ESS configured system i have a feed-in limit set to 12kw, witch I cant reach at the moment.
But i have seen 10+kW.

My house is supplied by 3-phase 16A grid.

I have one Multiplus-II 5000 on L1 and another on L2 configured as 2-phase..
In front of my Multi's I have a SMA TriPower 7kW.

Could someone please help me to understand, and help me fix the problem I have.
More detailed info you will find in supplied PDF.
My ESS issue 21-09-07 with feed-in Active.pdf

Please post me if additional info is needed!
I really want to solve this issue asap.

Br
/Fredrik

Fredrik Häggblad asked
Fredrik Häggblad commented ·

0 Answers

Are this PV array good for a smartsolar MPPT 75/15?

[image]

[image]

Hello everybody, I have been reading a lot in the forum looking for the best PV array for my MPPT 75/15. I got a campervan with two china 100w flexible panels on it connecting to my 75/15 and because a very hard hailstorm one panel is broken and the other panel is give me only 36w at direct sun. I am looking to replace them with another two panels. Can I connect these two panels on it?? I live in the north of spain and the van sleep on the street everyday. When the old panels were new it is supposed that the panels would give me 200w and the high Wtts I saw in direct sun were around 145w and now I want to put something that worst the money.

Thank you very much

aitor46 asked
aitor46 answered ·

3 Answers

Pv voltage to high smart solar mppt 100/20

I got 4 of such controller and have for each measured 70 V input (2 panels in series) max 10A.

manual said max 100 V . yellow and green leds are blinking, means to high voltage.

1. problem app did not fins any controler, maybe another smart phone works..

2. how on hell could i sort this problem out.....


1. first connect pv and try if controler is working than shut offf.

2. i connect my 48V opsz battery.

any clue?

lizirueti asked
Matthias Lange - DE commented ·

2 Answers

MPPT smart 3 Stück connect to CCGX

Moin !

at first - please see the drawing

I have two questions:

1. 3 x smart MPPT data connection to easysolar, there is no way (?) because VE.direct is in use by MPPT 3, the other one ät CCGX by BMV 700

2. what is the easy way (by costs) in my drawing to connect the mobilehome to the internet ät home ?

The mobile home is in function without failures since 1/2 year. Now I want to add on a Homebase functionallity to use the hardware every time mobile / station at home.11.png


thanks for your assistant

harvey


questus asked
questus answered ·

3 Answers

MPPT 150/100 CHARGING ISSUE

HI. I am using an SmartSolar MPPT 150/100 which at the end of absorption stage instead of switching to float stops charging the batteries so all my consumption switches on the batteries with full sun up. Settings made by my local dealer...same issue. Any ideas on that?

danielct asked
klim8skeptic commented ·

1 Answer

Phoenix Inverter 24V 1200VA 230V Does not follow lowest voltage cut-off

Dear All ,

I have a peculiar issue that the inverter even with hard coded lower voltage cut-off at 18.7V
and alarm at 20V ( Via VictronConnect and latest FW )

and still the inverter cuts off at 24 V exactly.

The current shunt and MPPT controller reports the same voltage during the shutdown

I hope someone could provide some light ?

Thank you


The Harvester

helios-harvester asked
helios-harvester commented ·

4 Answers

Upgrading my solar system, what extra would i need? Im making this right?

If something wrong here on my diagram please let me know,

Fallowing calculator i need; SmartSolar MPPT 150/85

But with one should i go for?


SmartSolar MPPT 150/85 MC4

SmartSolar MPPT 150/85 Tr

SmartSolar MPPT 150/85 Tr VE.Can



Or what other way can i hook up all panels to use directly 'power from sun' of all 25 panels using inverter / not batteries(batteries as backup) with im more interested with/

Cheers

[image]


Closed

magicmike asked
magicmike edited ·

1 Answer

components needed to charge batteries and then go to hot water heater

Good day all.

I am new to this technology and am getting conflicting answers in the "retail world".

I would like to set up a solar system (2x350 Watts) to charge 4x100aH LiFePo4 Batteries and when those are topped up to switch over to start a hot water heater (Bosch or Rheem) to heat the water. Of course at a set temperature I would want to switch off the heater and not have it switch on again until it dropped several degrees so it is not cycling on and off too often.

What components do I need (and what specs) to make this work efficiently. I am thinking I would like to use the Cerbo GX to monitor all of these (and more) devices.

I would appreciate the solution details and any things I should be concerned about that could go wrong.

Many thanks,

davidervin asked
shaneyake edited ·

1 Answer

MPPT 150/45 reading wrong battery voltage.

Good morning swarm knowledge,

On my boat I have two MPPT 150/45 TR wired parallel to my charge busbar. One is feeding two panels serial to the batteries (LiFePo 12V), the other feeding one panel.
The serial one showing correct Battery voltage, the single one shows 1.5 V more and so jumps into float too early. When I reset the MPPT, it shows the correct voltage for a few seconds, then jumps up again. When I disable charging on the app, it shows 0,5 V too low battery voltage.
Wiring seems to be ok.


Thanks for Your help!!



[image]



[image]


beammeup asked
wkirby commented ·

3 Answers

Please help with smartsolar mppt 250/100 tr ve.can, WONT CHARGE

I have been struggling all day to get this controller to charge. I am using 4x 320w panels in series 40voc. The app shows voltage but will not charge the lifepo4 batteries and all the voltages are within activation. https://diysolarforum.com/threads/victron-smartsolar-250-100-shows-volts-but-will-not-charge.27470/page-3 this is where I’ve been getting help all day with no luck trying different things. It says charger off reason is because: disabled by remote or bms. I have the jumper that came with it to h and l but is there something else I’m missing ?? Any help is greatly appreciated.

brandonboosted asked
Matthias Lange - DE answered ·

1 Answer

Synchronise Smart Shunt SOC reset with MPPT float stage

This is more of a question for the product developers - Can we add an option to reset smart shunt SOC to 100% when a connected MPPT charge controller enters the float stage? I know this wouldn't apply to all systems, but when all your devices are connected using VE Direct with a GX device (Cerbo in my case) all the information is there.

joshua-backwell asked
joshua-backwell answered ·

2 Answers

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