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Questions tagged [solar-energy]

Form of renewable energy emitted by the Sun, coming in two flavours: photovoltaic and thermal. The former, especially, relates closely to electrical engineering since it is traditionally harnessed through semiconductor devices and converted to AC in order to feed the electric grid or individual users' homes.

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24 V AGM battery simultaneous charge/discharge rates impact on C Rate

I have a solar set up 4×260 W panels with Vmp 31.1 V and Imp 8.37 A. My battery set up is 24 V with 2× 12 V 260 Ah AGM batteries in series. I have a 2 kW inverter for loads (as well as some LEDs ...
user2301960's user avatar
1 vote
1 answer
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Adding a PWM water resistive heater in parallel to MPPT Solar Inverter fed by 500V PV, will this damage the inverter?

I already have a working system EG4-18k is powered by enough PV to recharge the battery by 11AM. I has "smart load" feature that I use to heat water tank with ~5kW resistive heater (240V x ...
Tjunkie's user avatar
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1 vote
1 answer
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AC: Compare change of current/power inverter feeds into grid with change of current/power measured at grid side

I'm living in Europe, connected to the grid: 50Hz, 230V and my apartment is connected via only one phase. Let's assume my apartment has a constant demand of 500W - which does not change. There is a ...
daten's user avatar
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How do I train or code my ANN PV MPPT so that it could output 60V from the boost converter?

I'm currently designing an Artificial Neural Network PV MPPT. Currently the MPPT is working as it intended. Right now I want so that i can train or code my ANN block so that it can output a 60 volt ...
fast35's user avatar
  • 29
3 votes
2 answers
558 views

Is a simultaneously parallel and series battery configuration possible using diodes?

Suggestions and help please, I don't want to risk a fire. simulate this circuit – Schematic created using CircuitLab
Npn's user avatar
  • 41
5 votes
4 answers
417 views

Where does the MPPT charger excess power go?

Looking at an MPPT charger, I’ve been thinking about this: If an MPPT charger always seeks the maximum power output from the solar module, how does it regulate charging when the battery requires ...
Minh Trinh's user avatar
-4 votes
1 answer
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Cascade Linear Voltage Regulator to increase Max Input Voltage

For a University Solar Project, I try to make a DC-DC converter on an own PCB with 160V Input to 5V output. (Current wise >500mA one Esp32 is the main Consumer). I have 4 Solar Panels with 40V each....
Alexandros Weeb's user avatar
1 vote
1 answer
61 views

Solar off-grid configuration to run heavy electrical appliance [closed]

I have around 15 solar panels rated 330 W which goes unused most of the time. I use them for 6 hours in a week tops for irrigation purpose. So I am looking out to put the panels to use while idle. I ...
Raj Pawan Gumdal's user avatar
1 vote
0 answers
40 views

Adding a seconf PV inverter [closed]

I had a single string of 8 PV connected to an inverter which then connects to a grid generation meter. Due to some building work I have had to reconfigure the system - which now consists of a string ...
Alan A's user avatar
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9 votes
2 answers
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Could a solar farm work at night?

So I'm finding different numbers online, but it seems that the consensus is that solar panels can generate around 0.2-0.3% of their rated power from moonlight, assuming good conditions (clear night, ...
Timst's user avatar
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2 votes
1 answer
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How does AC backfeeding work? [closed]

How/when does AC backfeeding work (such as in a grid-tied solar power generator plugged into a 120V wall socket)? Is a slightly higher voltage required to backfeed?
Geremia's user avatar
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1 answer
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What breakers or switches are really needed on this solar setup?

I asked a question whether with DC breakers does polarity really matter?, that caught fire in the direction of whether at all to use those breakers or any breakers for that matter. The suspicion is ...
Gunther Schadow's user avatar
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0 answers
48 views

Bidirectional Solar inverter circuit confusion

I has seen a solar inverter design and have some confusion regarding the inverter circuit I have drawn myself from an inverter. The circuit is shown below. As far as I understood going from left to ...
kam1212's user avatar
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1 answer
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How to secure ESP32-to-inverter RS232 communication by filtering commands using ATtiny?

we are working on a project where an ESP32 communicates with a solar inverter (Axpert KS/MKS/V) over RS232 to fetch status data (e.g., PV power, battery voltage) via the ...
Abdulkader Khateeb's user avatar
1 vote
1 answer
43 views

kWh/kWp Solar atlas meaning [closed]

I have a doubt, if I read the value of 'Specific photovoltaic power output' from pages like this solar atlas what does this relationship means? if I have 1 kWp installed capacity I will generate 3.958 ...
user14398375's user avatar

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