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Independent Power Solar Cell

Generating electricity at home? It was made possible by the installation of solar cells, solar cells convert sunlight into electricity. Electricity is stored in batteries, battery switch on the lights.

In the use of solar cell to generate electricity at home, there are some things we need to consider because the characteristics of the solar cell:

* Solar cell requires sunlight. Place the solar cell at the position where not obstructed by objects throughout the morning until the afternoon.
* Solar Cell - solar cell produces direct current electricity, DC.
* For higher efficiency, use DC lamps such as LED lights.
* Installing a new cable for direct current, DC for the following devices such as: LED-based lighting (Light Emiting Diode), CCTV cameras, wifi (wireless fideliity), etc..

When we make a new home, it is advisable to use electricity and solar cell. Solar cell is used for partial illumination (in this case using direct current DC) and electricity to alternating current devices such as air conditioning: Air conditioning, Refrigerator, some lighting etc.

When the DC power stored in batteries to use the device turn on the AC: water pumps, refrigerators, etc. it is necessary that the inverter can convert DC power into AC. Customize your power needs required by solar cell, inverters, batteries.
LED lamps as lighting Houses

There is now using energy efficient lighting such as LED lighting, DC. Compare 3 Watt LED light the equivalent of 15 Watt AC Lighting.

The drawback is:
* Installing a new cable for the LED light.
* The cost of procurement of more expensive lights.

The advantage is:
* The use of small energy
* The reliability of the LED light 10 x usual standard lamp
* Use two core electrical cable.


AC  Lamp
LED Lamp
Voltage
220 VAC
12 VDC
Watt 15 Watt
3 Watt
Lifetime
6,000 hours
50,000 hours
Cost
+ Rp. 25,000 + Rp. 250,000

Solar Cell for AC Electric

If we wish to use the energy of solar cells for other home equipment, follow the example of the following calculation.

If we take the alternating current electric power at 2000W for 10 hours per day (20KWh/hari) then the required 24 panels of solar cells with the capacity of each 210WP and 30 @ 12V 100Ah battery. This is based on the calculation of solar energy from 7 am until 5 pm (10 hours) and the assumption of energy conversion at least 4 hours a day

.

Solar energy 
The amount of solar cell
Capacity of solar cell
Calculation
Result
4 hours
24 panel
210 Watt
4 x 24 x 210
20.160 Watt hour

Basis for calculating the number of batteries are 2 x 3 x electrical needs.

The existence of the multiplier 3 to anticipate when the rain / overcast continuously for three consecutive days. While the multiplication factor 2 due to battery must be no more than 50% loss of capacity if it wants long-lasting battery, especially for such a dry battery type gel and AGM. In other words labored to DOD (Depth of Discharge) did not exceed 50% because it is affecting life time of the battery itself.

The amount of battery 
Voltage 
Ampere 
Calculation
Result
100 
12 Volt
100 Ampere hour 
100 x 12 x 100 120.000 Watt hour

 

 
Solar Power Plant

Why use solar power / solar?

Indonesia system solar cells have the gift of sunlight. Almost in every corner of Indonesia, the sun shone all morning until the afternoon. Emitted by the sun's energy can be converted to electrical energy using photovoltaic panels (solar cell)

Solar power plants are environmentally friendly, and very promising. As one alternative to replace power plants use steam (with oil and coal).

The development of technology in making solar cell that is better than the level of efficiency, making long-lasting battery, making electronic devices that can use Direct Current, is very promising.

At present the use of solar cells is still considered expensive due to the absence of subsidies. The electricity we use today is actually subsidized electricity. Imagine exploitation / mining of petroleum, coal (which damage the environment), creating the steam power generation, power distribution, which are all built with high cost.

Excess use of solar power:
* Energy is renewable / inexhaustible
* Clean, friendly environment
* Age solar cell / solar cell length / long term investment
* Practical, does not require treatment
* Very suitable for tropical areas like Indonesia

Solar cell as an important component of solar power plants, getting electricity in the morning until late afternoon sun over there. Generally, we calculate the maximum sunlight converted into electricity throughout the day is 5 hours. Electricity in the morning - afternoon stored in batteries, so that electricity can be used at night, whereas without the sun.

Because solar power plants is dependent upon the sun, so good planning is essential. Planning consists of:

* The amount of power required in everyday use (Watt).
* How large is the resulting flow of solar cell (in Ampere hour), in this case, considering how many solar cell to be installed.
* How many units of batteries required for the desired capacity and consideration of the use without sunlight. (Ampere hour).

In value to the economy, solar power plants have a higher value, whereby electricity from the PT. PLN is not possible, or installation of gasoline or diesel electric generators. For example in remote areas: mining, plantation, fishery, a remote village, etc.. In terms of long-term, value to the economy is also high, because with good planning, solar power plants with solar cell has the endurance of 20-25 years. Batteries and several other components with durability 3-5 years.

Some components of solar power plants (how it works can be read at the Solar Power Installation):

* Solar cell
* Charge controller
* Battery
* Inverters

Conclusion of people use solar cells because:

* Want to contribute to the environment
* Do not want to depend on the PLN
* Remote area, electric power from solar cells is cheaper.