Solar panels in parallel or in series?
Hello, I have a quick question. I'm currently working on a small PV system!
When connected in parallel, do the panels' watts and amps add up? Does the volts remain the same?
In series, volts add up and the rest remains the same?
I would be very grateful for a little help!
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W = V * A (in units, the formula is correct P = U * I)
A = W / V = 280 / 36 = 7.8 A
and 8 A, because you rounded the performance.
Solar panels are usually connected in series. Solar cells do not carry a greater voltage backwards so well, and this can happen when a cell is darkened.
Hello!
In the series connection, the current remains constant but the voltage is added! So, you have two 12V panels coming out a voltage of 24V.
Other case Parallel: Here the supplied current is added but the voltage remains the same!
Watt (power) is always the product of voltage and current.
Note: 12V * 2A = 24W
Hope could help you, greetings
So I get at two 140W 18V 8A panels in series 280W 36V and how much A?
Why "whether" you're making solar panels if you don't even know the most basic calculations for the electricity? I mean, it's nice you do this, but then let someone help you. You won't catch a power stroke, but 280 watts, concentrated on a small area, is enough to ignite combustible material.
These calculations (P=U*I) should even have been school material, at the latest 10th grade. So you can get back to work, by the way, ;-). It is also much easier and more satisfying if you know exactly what you are doing.