Solar Panel Installation and Maintenance

Solar Panel Installation and Maintenance

Abhishek Bana

Solar System Components

Solar systems are made up of solar panels (modules), a mounting system, and a solar inverter with computerised controller. Solar panels produce DC electricity from sunlight. Then the inverter converts the generated electricity into AC, so that it can be used in the household. The computerised controller manages the solar system and ensures optimal performance. If you want battery backup system or an off-the-grid solar system, a battery is required.

 

Solar Panel Installation

The most common location for the installation of solar panels (solar PV) is the roof. Most roofs typically have the desired specifications for the installation. Nevertheless, if installation on the roof is not applicable or desired, the solar panels could also be mounted on the ground. You just need to make sure that there are not objects constraining their access to the sun.

Setting up a solar battery storage at the same time of installing a solar system can save you from worrying about the lack of usable energy during cloudy times, it can also lower the solar battery storage system costs during installation.

 

Inverter Installation

The inverter is typically installed near the main panel and it could be both indoors and outdoors. Inverters are more efficient if kept in a cooler place. If the inverter is outdoors it should be kept out from the afternoon sun. If it is installed indoors, the garage or the utility are usually the best places, since they stay cool for most of the year and have ventilation.

 

System Monitoring

You can use your computer or other device to check your solar system’s performance. For example, you can check how much electricity you generate at different times and decide what time is suitable for using your washing machine or other utilities.

 

Solar Panel Maintenance

Since there are no moving parts, solar panels require very little maintenance. Once you have covered the installation cost of solar panels, there are not many costs associated with maintaining them. Having said that, you should inspect them a few times per year for dirt or some other things that might have piled on top. It is important that the panels are clean and there is nothing blocking them from efficiently absorbing the sun.

Before cleaning the panels yourself, you should consult with your installer about the warranty conditions. Some solar panel manufacturers could terminate the warranty if any self cleaning is done. For a general cleaning, you can just use a normal garden hose to wash the face of the panels. You should do this in the morning or evening. Also avoid spraying them with cold water while they are hot because that might damage them.

Moreover, If the panels need some more cleaning that the hose cannot provide, you can use a sponge with soapy water to scrub them. You can also get the services of a cleaning company. This is advisable if the panels are too high or need more thorough cleaning.

You should have your system examined every 4-6 years by an installer. It is also a good idea to ask your installer about specific maintenance requirements for your solar system.

 

If you want to take the next step and get solar panels for your home, then look no further. Fill in the contact form to compare up to 4 quotes from suppliers near you. Since Saurally is Solar Panel Manufacturer, you’ll get the best market price without any middleman.

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How does a PV system work?

How does a PV system work?

By Aruna Shekar

The basic component of every photovoltaic system is the solar cell. In most cases the solar photovoltaic cell is made of silicon, a semiconductor that  is also used for diodes, transistors and computer chips. With the introduction of foreign atoms (doping) a p-n junction is generated in the cell that  “installs” an electrical field in the crystal. When the light reaches the solar photovoltaic cell then charge carriers are dissolved out of the crystal  bindings and moved by the electrical field to the outer contacts. The result at the contacts of the solar cells is the creation of a voltage of approximately 0.5 V. This is called photovoltaic effect. In order to achieve a usable voltage in the region of 20 – 50 V, many cells are switched together in series in a solar module. Besides this, the solar photovoltaic cells in the modules are  mechanically protected and sealed against environmental influences.

To make a solar generator, firstly a string of many modules connected in series is composed.This string can again be parallel-connected to further strings. Protect diodes are incorporated into panels to prevent cells with low resistance shunt leakage from getting very hot during periods of partial shading, while string diodes are mounted to prevent reverse current in case of a short circuit. This scheme has the advantages that it can be sized without limits and, in case of fault of a PV module, the damage does not compromise the operation of the entire system.

In many parts of the PV plant (end of a string, inverters and other point of transformation of the current) switchboards are installed with the function of protecting and isolating the various parts of the PV plant. They can be used also to disconnect some sections or to switch off the entire system.

Systems needs the inverter to convert the DC from the solar modules to AC. The solar inverter converts the direct current delivered by the modules into alternating current and feeds it into the public grid. The number of modules determines the total DC watts capable of being generated by the system, although the inverter determines the amount of AC watts that can be consumed. A feed meter measures the generated solar electricity in order to collect payment for the photovoltaic energy generated. The user meter counts the current consumption of the household separately.

This guarantees that the fed-in electric energy is paid for by the energy supply company for 20 years at a guaranteed price. To a certain extent, the owner of the plant becomes a power system operator.

When the system is not connected to the grid is called off-grid. The generated power is stored in a battery. A charge controller may be used to avoid battery damage by excessive charging or discharging.

For the owner of a solar power system the power of his plant is of interest and so is the module is measured according to the Standard-Test-Conditions

(STC) and defined by three limiting conditions:

  • Full Sun radiation (radiation strength E = ESTC = 1000 W/m2)
  • Temperature of the solar module: JModule = 25 °C
  • Standard light spectrum AM 1.5

The capacity of the solar module under these conditions is the rated power of the module. It is given in Watt-Peak (Wp) as it actually describes the  peak power of the module under optimal conditions. The efficiency of silicon solar modules is in the range of 13–20%. Besides silicon there are also other materials such as cadmium telluride or copper-indium-selenide, which go under the name of thin film technologies. These reach module efficiencies of 7–13%.

 

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