basic about solar energy

8/6/2019 Basic About Solar Energy

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Basic about Solar Energy, Solar Power and Solar Electricity.In basic about solar energy, solar power and solar eletricity we will talk about the basic things

behind this power. Formulas that will be used to find out which Solar Panel you should use andwhich battery you should select. And how much Solar Panels do you need to power up lights and

other applications. Here are the main things you need to know and that will be used to calculate

your needs. AC-DC system, Volt, Current(Ampere), Power(Watt), Resistance, Series andParallel connecting.

AC-DC systemAc stands for Alternative Current. Alternative current is almost that we found in wall outlet or

electric outlet. Clever say'd that we found in wall. It is 230 Volt. DC stands for Direct Current. Insolar panels it is used 12 volt dc system. DC is that current we can found in cells, batteries, and

using adapters or regulators. See the picture of a dell charger. Dell charger also converts ACCurrent to DC 5.4 Volt and 2410mA. Solar Panels also uses DC voltage and Current.


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Power Circle

VoltVoltage is the electromotive force (pressure) applied to an electrical circuit measured in volts(E).

Example. P=200W, I=4.0A. If we have a value of watt and ampere and we want to find out howmuch volt does it use then we should use this from Power Circle. E=P/I. 200/4.0=50V. So we

found voltage is 50V.

CurrentCurrent is the flow of electrons in an electrical circuit measured in amperes (I).

Example. P=100W, E=12V. We want to find out how much ampere does it use. We take a lookat circle. I=P/E. 100/12=8.33A. Current usage is 8.33A.

PowerPower is the product of the voltage times the current in an electrical circuit measured in watts

(P).Example. E=220V, I=0,4A. This example is taken from picture of Dell Charger. We have

400mA=0,4A. Take a look at circle P=E*I. 220V * 0,4A=88W. Answer is dell charger use88Watt.

ResistanceResistance is the opposition to the flow of electrons in an electrical circuit measured in ohms (R).Increased resistance gives higher voltage and higher power(watt).

Example. E=12V, I=3.0A. We want to find out resistance. We use formula R=E/I. 12V/3.0A = 4Ohm.

Parallel Connecting - 12V System

Parallel Connecting solar panels gives higher current. And voltage will remain the same. ParallelConnecting is best for us. Because we do not need high voltage. Normal battery is 12v. And by

selecting high voltage require higher voltage charge controller. To connect solar panels inparallel we have to connect plus + to plus and minus - to minus. See the picture for details.


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Series Connecting - 24V System

By connecting Solar Panels in series connection. It will increase Voltage and current Amps. will

remain the same. To connect solar panels in series we have to connect plus + to - minus on nextpanel. See the picture for details. In this example we have connected 2 solar panels in series

which will give 24v output.


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Series and Parallel Connecting - 24v SystemIf we are creating a 24v system. So then we have to connect two solar panels in series and

connect two series connected panels in parallel as showed in figure under. Which increasesvoltage to 24v and when we have connected two other 24v connected solar panels in parallel so

voltage remains same and increases current Amps. If we want to increase output current on 24vso we connect more solar panels in parallel same way under as shown in figure under.


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basic about solar energy

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