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DVCC three phase, the solar chargers don´t have priority over the generator

Dear,

according to Victron GX documentation with DVCC on, there should be given priority to the solar chargers. This is not working correctly in this setup:

GX 2.91; 3 phase Multiplus 5000 v.482, Smartshunt v.408, 3xSmartsolars v.159

DVCC is ON with Charge Current limited to 222A, all "senses" are shared and VE.Bus temp sensor chosen.

While the generator is ON and the battery not fully charged (bulk and beginning of absorption) the generator helps out on a high load on one phase. The other two phases charge the battery. This is not the expected behaviour as solar is available, the solar chargers are limited down to zero contribution. But according to the description solar should have charging priority.

Is there a solution, something we are missing out?


Oliver asked
Oliver commented ·

0 Answers

DVCC and ESS doesn't work. Rpi4

Hi,


I got my cerbo gx killed when I connected it to 48V.

https://community.victronenergy.com/questions/152325/cerbo-gx-geht-standig-kaputt.html

As a fast solution I installed a RPI4 with venusos.

Everything works fine but the system ignores DVCC and ESS, the same worked fine with the Cerbo GX.

Any help would be very nice :)

v2.91~1

joelsahlen asked

0 Answers

IP43, syncronized charging and DVCC

I am looking for some details and/or confirmation about the IP43 charger 120-240V model.

===========================================

When looking here,

https://www.victronenergy.com/media/pg/VE.Smart_Networking/en/ve-smart-networking-product-compatibility.html

it is specified that ONLY the 120-240V model supports both

  • the data sense sharing (V and T) capability
  • the charge synchronization capability

The 230V model only supports the first one.

Q1: Is the information found in the documentation accurate and up to date?

============================================

When I am looking to the change log of the IP43 firmware,

https://professional.victronenergy.com/downloads/firmware/file-download/?name=Phoenix%20Smart%20IP43%20Charger/Phoenix%20Smart%20IP43%20Charger%20firmware%20changelog.docx

the latest entry is about FW version 3.38. However, it looks like the 120-240V is only using FW 3.50.

Q2.1: Is it possible to update the change log document to know exactly what we have in FW version 3.50?

Q2.2: Is version 3.50 the initial release version for the 120-240 model?

============================================

Sometime ago, I posted few question regarding the IP22 rev2 and the synchronized sharing capability.

https://community.victronenergy.com/questions/99702/ip22-rev2-mppt-syncronized-charging-how-the-storag.html?childToView=100422#answer-100422

Basically, I will ask the same questions but for the IP43 (120-240V model only)

Q3.1: Does the IP43 120-240V model will always become the charge master if combined with MPPTs in a VE.Smart network?

============================================

DVCC vs VE.Smart network

In the VE.Smart network documentation,

https://www.victronenergy.com/media/pg/VE.Smart_Networking/en/limitations.html

it is said that DVCC voltage sense takes over voltage sense coming from VE.Smart network.

Let's suppose you have a system with an IP43 120-240V model and 1-2 MPPTs (being both VE.Direct and VE.Smart capable)

Q4.1: What about the "Synchronized charging" capability of the VE.Smart network when DVCC is enabled on the GX? Is it deactivated or still in function?

Q4.2: If it is still in function, does the current limit capability of the DVCC be used by MPPTs?

============================================

It is said here DVCC is not yet supported by the IP43 charger.

https://community.victronenergy.com/questions/144664/bms-ccgx-phoenix-smart-ip43-charger-the-dvcc-wont.html

Knowing the 120-240V model is using a newer FW (3.50)

Q5.1: Is it true for 120-240V mode? (.i.e DVCC not supported)

Q5.2: What is not supported exactly? Everything (voltage sense and current limit capability)? Or just the current limit capability?

============================================

Thanks!

-François

gyzko asked

0 Answers

Does a GX device (External Control) with a SmartSolar override the Float/Storage state for the relay trigger?

Our customers like to use the SmartSolar relay to trigger an external contactor with an immersion element when the (CANbus Pylontech) batteries are fully charged. Triggering the relay on Float/Storage state seems to be the best approach, though we've discovered the relay does not seem to trigger when the batteries are full when the SmartSolar is operating under "External Control" from the Cerbo GX with DVCC enabled. If DVCC is disabled, then this seems to work as desired. On the Victron Connect main page for the SmartSolar, it'll only display Bulk/Absorption/Float state when DVCC is disabled; otherwise it only says "External Control".


I was wondering if others have experienced this, or if Victron staff can confirm this is the correct operation and whether there is no way to use the Float trigger relay option when using DVCC and CANbus batteries. Thanks

midsummerenergy asked

0 Answers

DVCC in off-grid DC installation - "dynamic charge current"

Good day!

Looking at https://www.victronenergy.com/media/pg/CCGX/en/dvcc---distributed-voltage-and-current-control.html#UUID-34a4601f-5b47-faa7-9b06-dc557696f5fc

Point 8.4.1 - sub-point "3"

"DC Loads are not accounted for. Even when a BMV or other battery monitor is installed. For example, with a configured maximum charge current of 50 Amps, and DC Loads drawing 20 Amps, the battery will be charged with 30 Amps. Not with the full allowed 50 Amps."


When or how can we change this? I cannot see why the DVCC cannot increase the current from chargers to compensate the loads and keep charging current at for example 50A.


Offcourse the idea works flawlessly in ESS configuration, but we do not have any inverter in the setup - but we do have high DC loads.


Any input or ideas will greatly be appreciated!


Regards

goose asked
mickwhitehead commented ·

0 Answers

SmartSolar VE.Can 150/70 not temperature compensating.

Hello All,

I have a Cerbo GX connected via VE.Can to a SmartSolar MPPT 150/70 VE.Can and a Lynx Shunt 1000 VE.Can. I have DVCC enabled as well as SCS, SVS, and STS. I have found that the MPPT changes charging states correctly according to the readings from the shunt. However, it is not compensating voltage according to the temperature reading from the shunt. The MPPT seems to be compensating from the initial ambient temperature as the standalone strategy. The MPPT has v3.05 firmware and the shunt has v1.08. Any help would be appreciated.

klabobidy asked

0 Answers

A DC-DC charger that participates in DVCC?

I stumbled upon the Buck-Boost DC-DC Converter and thought it would be great for my hybrid RV setup (12V OE alternator and battery, 24V auxiliary alternator and house LFP bank). But then I was very surprised to learn that it is not integrated into the beautiful Victron CAN ecosystem and thus cannot participate in DVCC.

In my dreams, I would have this device work bidirectionally: use up to 40A of current from the OE system to charge the 24V LFP bank and keep the OE 12V system topped up from the 24V bank when the engine is not running. Both being controlled by the REC Q BMS.

Is there any way to achieve even a portion of this?

Thanks,

A.


Adam Sherman asked

0 Answers

Multiple SmartSolar MPPTs and DVCC - What set the power output?

In an installation with a CCGX and multiple SmartSolar MPPTs each MPPT with the same spec array and exposed to the same incoming solar what will determine the power produced by each MPPT?

Is it just down to small differences in physical installation? e.g. cabling or variation in actual panel output. Or is there something happening within the DVCC algorithm to control power output in each MPPT?

rodgerd asked

0 Answers

How to program equalization with Venus GX, MPPTs and DVCC on

Hi,


My question: Is there a way to manually equalize or automate equalizing while using DVCC?


My problem: When DVCC is on it seems impossible to trigger equalizing. I have tried via the GX console or directly on the charger via VictronConnect. Without luck. When I switch off DVCC I can trigger equalizing with VictronConnect over Bluetooth on the charger.


My setup:


Island setup. No connection to the grid.


- Battery: 24 V, 900ah lead acid

- Panels: 18 275W. Configured as 2 arrays (east, west). Each connected to a charge controller

- Inverter: Multiplus 24/5000/120-100

- Charge controller: 2x SmartSolar Charger MPPT 150/70. Connected vi VE.Direct

- Venus GX


DVCC settings:

- DVCC on

- Limit charge current 100A

- SVS on

- STS on


Regards,

Daniel




oliveoil asked
oliveoil edited ·

0 Answers

BMW-702: High voltage alarms after enabling DVCC

Hi,

I have a 5KW Multi with 5KW of AC coupled solar (oversized arrays, PV inverters rate limited as per the 1:1 rule) as well as a MPPT which on ideal days adds another 1KW of solar power, all connected to a 600Ah 48V Lead Carbon battery bank. I recently enabled DVCC with SVS and STS and a current limit. The BMV-702 now reports high voltages: 57.8V, which indeed is a bit too high for my liking. The Multi is set to: absorp: 55.0V, float: 53.70V, the MPPT 250/60 is set to absorp: 55.20V, float 53.90V.

Often I see that the MPPT 250/60 has completely derated itself, while the Multi is still pumping ~1KW into batteries that are full. I would expect to see the Multi derate itself first (due to the lower voltages programmed).

I have two questions:

1. What could cause a high voltage situation of almost 3V above the programmed absorp voltages? The only explanation I can come up with is that it's caused by as high load disconnecting while the batteries are full. If this is the case, would this be considered an issue? Note: I have only seen this happening after enabling DVCC and my theory doesn't seem to be supported by the graphs:

[image]


2. Why is the Multi not derating before the MPPT is derating?

When the batteries are full, I prefer to derate the large AC coupled arrays first, and leave it to the MPPT to keep the batteries floating. High loads will of course cause the Multi and thus AC coupled PV inverters to rate up again and once those high loads are disconnected, to derate again. When the batteries are full, this happens fairly quickly.

regards,
Jan

jbakuwel asked

0 Answers

Dynamic DVCC depending on the current load

I have a Quattro , CCGX, Blue Solar MPPT und a Lithium Battery with REC-BMS.

Is it possible, that the Quattro delivers all the time as much load, as the system wants (when on shore power)

Background : I want to hold my SoC for example at 80% , so that all loads will go via the Quattro and not via my lithium batteries.

Like a Power supply mode.

I can manually adjust DVCC , and I will do these very often a day to adjust the load. But maybe this is possible automatically.

wolle4000 asked

0 Answers

DVCC implementation on Venus GX , AGM, MPPT 75/50, BMV702 & Phoenix


Hello Victron Community,

Seeking a 2nd pair of eyes over configuration changes needed to implement DVCC. I have read and reread several times the documentation covered in the CCGX manual. As my environment is simple (no ESS no BMS no Multiple etc). I think this should be start forward, but just want the confirmation, as the continual warnings in the documentation have got me gun shy.

Question, when would be the best time during the day to implement these changes? I assume not during the active charge cycle? Recognising that the SCC are power from PV panels Should the changes be made once they are off and assume that they will pick up the changes from the Venus upon start up the next day. OR should I implement once the charge cycle is in float stage?

Attached Below is a diagram of the environment. (ENYA.PDF)

THANK YOU.

It consists of the following equipment.

1 x Venus GX (Ver 2.42) plus 2 x Temp Sensors – ASS0000010000

1 x Phoenix 12/3000 (Ver 154) VE.Bus Ver (2609154)

2 x MPPT 75/50 (Ver 1.37 & Ver 1.37)

2 x BMV702 (Ver

12 x 6V AGM Full River 250Ah (1500Ah)

4 x 327w SunPower PV Panels

ENYA.pdf

4.1 Intro & Features P29/50.

Auto Config NO

SCS YES

SVS YES

STS YES

CCM –

ATC & ATD N/A

[image]

4.2 DVCC Requirements P30/50

VENUS GX to be above v2.12 status v2.42

MPPTs to be above v1.29 status v1.37

[image]

4.3 DVCC effects on Charge algorithm P31/50

[image]

4.4 DVCC Features for all systems

4.4.1 Limit charge current

This is where I am a little unclear.

As I have 2 MPPT’s am I correct I still only set this at 50Amps as the source will be one of the BMV’s on one of the banks, and not need to set this to the max sum of both e.g.: 100Amps. Additionally, should there be an allowance for ships load?

[image]



4.4.2 Shared Voltage Sense (SVS)

AGAIN, This is where I am a little unclear.

As there are 2 BMV 702 is this an issue? I assume it will source from one of the BMV’s feed this to the MPPTs (which will remove my voltage drop issue due to cable run length, which is currently introducing ~ 0.13v drop)

[image]



4.4.3 Shared Temperature Sense

I am good with this, simply reference one of the 2 x ASS0000010000 I have installed. (Will remove the BMV 702 temp sense, as I will be implementing mid- level monitoring in the very near future.)


[image]


4.4.4 Shared Current Sense (SCS) P34/50

This looks Ok , but concerned that is will only be reflecting the current (and using tail current from on BMV/ Battery Bank)

4.5 DVCC features when using CAN -Bus BMS sharing

N/A in my case/environment

4.6 DVCC for systems with ESS Assistant

N/A in my case/environment

enya asked

0 Answers

Odd issue with STS on VE.Bus

Hi, I am experiencing an odd issue with my system. A couple of days back the VE.bus System battery temperature disappeared so my Multiplus II is no longer following the temperature compensation curve. I have a BMV-712, CCGX, Multiplus II and smart solar MPPT. The BMV is reading the correct temperature and I can see the same temperature using dbus-spy on the MPPT under com.victronenergy.solarcharger.tty02/Link/TemperatureSense as well as in com.victronenergy.system/Dc/Battery/Temperature. DVCC and STS are turned on. However, for the Multiplus, com.victronenergy.vebus.tty05/Dc/0/Temperature has no value. I've tried rebooting the entire system and all firmware is the latest, except the Multiplus II which is running version 466. I've also done a 'redetect system' and a 'system reset' via the CCGX, but no luck. Anybody else experience this problem? I would much appreciate any pointers to help resolve it.

electronzoo asked

0 Answers

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