Idea

Hi @Kevin Windrem

one of the ways is:

https://www.victronenergy.com/live/assistants:ignore_ac_input_using_the_generator_assistant

As Kevin says, this would be a useful feature in venus.

For example I can set my Multiplus to inverter only mode (ignore ac -input) manually from the Multiplus settings menu in venus. it would be nice to have a setting to switch to invert-only if PV volts are greater than a configurable value. in my case this would be about 50V but each system will be different. It might need a time delay on switch on and off to prevent relay chatter.

I am well aware of the various ways to do this using assistants based on battery state of charge but this is a different approach that would be configurable remotely.

The only way I can see to prioritise DC PV usage is to drain the battery slightly.

This is because the MPPT is a battery charger not a power supply. it needs to see a battery voltage less than it's set point before it will load the PV panels. A battery with 100% SOC will throttle the MPPT output.

If AC-input is available then the Multi's charger will naturally take priority unless its charger set voltage is lower than the battery voltage at that instant, and/or it's input current limit is lower than the AC load demand.

So to prioritise solar we need to turn off ac input and/or disable charger and/or limit AC input current.

These settings are available manually in venus So I'll have a go at automating them depending on PV voltage but this might need a better programmer than me.

@kevin Windrem

As you know the gui files very well and have a lot of experience of them....

Can you tell me if this Visual item Model sets the mode of the Multi directly? or is there a .py file associated with setting it?

in PageVebus.qml-

model: VisualItemModel {

MbItemOptions {

description: qsTr("Switch")

bind: service.path("/Mode")

possibleValues: [

MbOption { description: qsTr("Off"); value: 4 },

MbOption { description: qsTr("Charger Only"); value: 1; readonly: !isMulti },

MbOption { description: qsTr("Inverter Only"); value: 2; readonly: !isMulti },

MbOption { description: qsTr("On"); value: 3 }

]

If this sets the multi's mode directly I can't add another option and value (5) as it won't be recognised by the multi, but if there is a .py in the way then this might be an option.

I'm trying a few things out and hope to get this mode working. :-)