Hello
We will soon get an e-Golf that we want to charge using our two photovoltaic systems. One has been installed since 2011 and the other one this year. Since one is on the east side and the other on the west side, we want to make full use of the morning sun and the midday/afternoon sun.
For this, we have installed two high-voltage power connections. However, we currently have to manually switch around 12 noon to use the corresponding photovoltaic system.
Is there a solution for this? A manual transfer switch where both power connections are routed and that can be switched by hand? Or perhaps even a solution that can be controlled via LAN cable or Wi-Fi? Ideally, a socket outlet with an integrated timer that automatically switches at a set time to the "other" photovoltaic system...
What is this called? Does anyone know of anything similar?
We will soon get an e-Golf that we want to charge using our two photovoltaic systems. One has been installed since 2011 and the other one this year. Since one is on the east side and the other on the west side, we want to make full use of the morning sun and the midday/afternoon sun.
For this, we have installed two high-voltage power connections. However, we currently have to manually switch around 12 noon to use the corresponding photovoltaic system.
Is there a solution for this? A manual transfer switch where both power connections are routed and that can be switched by hand? Or perhaps even a solution that can be controlled via LAN cable or Wi-Fi? Ideally, a socket outlet with an integrated timer that automatically switches at a set time to the "other" photovoltaic system...
What is this called? Does anyone know of anything similar?
K
KampfKraut21 Dec 2019 23:58guckuck2 schrieb:
Sorry, but I don’t understand this.
Both photovoltaic systems are available to the household.
So, if you plug your car into an outlet, it will charge using the photovoltaic power instead of grid electricity, provided the photovoltaic system is generating power.
I also don’t see the point of having two outlets, especially since I understand one outlet would be for photovoltaic system 1 and the other for photovoltaic system 2. But that doesn’t make sense if both systems are connected to the house grid.
Or is your idea to leave the car plugged in all the time and only start charging when the photovoltaic system (whichever one) is generating electricity? I didn’t really want to explain the whole story, but okay...
There are two photovoltaic systems – one of them supplies a heat pump. That system also has a separate heat pump tariff. Then there is a second tariff for “lighting power.” So, we have two tariffs in the house. If we charge the car in the morning using the “east side power,” as the sun moves during the day, the available “free” solar power decreases until around noon when the sun fully shines from the west side. At that point, we want to simply “switch over” to take advantage of the full free solar power for charging. The difference between what the car draws and what the solar system produces has to be supplied from the grid. We want to keep that as small as possible.
Mycraft schrieb:
Please have a friendly electrician come to your house. From your description, it’s not really clear what the current situation is and what exactly you want to change. The electrician is coming anyway. But I would like to inform myself in advance about what is possible.
Connecting the car to the circuit with the photovoltaic system for the heat pump means the car will be charged with the heat pump’s electricity. This likely violates the terms and conditions.
Your overall setup is unfavorable. Remove the heat pump tariff to make the output of both photovoltaic systems available for the heat pump and all other consumers.
Alternatively, you can ask your electrician about metering concept 8.
Your overall setup is unfavorable. Remove the heat pump tariff to make the output of both photovoltaic systems available for the heat pump and all other consumers.
Alternatively, you can ask your electrician about metering concept 8.
K
KampfKraut22 Dec 2019 11:02For my old system on the west side, I even receive a 16-cent feed-in tariff for every kilowatt I consume myself. For the new one, I no longer get that. Just for that reason alone, I can't "combine" them. That's why I would really like to implement my idea.
Measurement concept 8? Could you please explain that to me in more detail?
Measurement concept 8? Could you please explain that to me in more detail?
Each system keeps its own inverter. Nothing is combined in this regard.
You should talk to your electrician. Please search for the metering concept on Google. It allows the use of photovoltaic electricity for the heat pump, even though the heat pump has a separate meter/tariff. Personally, I would keep it simpler and just remove the heat pump meter.
You should talk to your electrician. Please search for the metering concept on Google. It allows the use of photovoltaic electricity for the heat pump, even though the heat pump has a separate meter/tariff. Personally, I would keep it simpler and just remove the heat pump meter.
K
KampfKraut22 Dec 2019 12:10Okay, all right. Thanks anyway for the help. I would have liked to know if such a "high-power timer switch" exists, but oh well.
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