No doubt, no one will like such sort of electricity, which is available only in day-time or when the sky is clear from clouds, or clear day only.If we would like that electricity is available 24-hours in day and night,Then in this circumstances you will need such a device which store and electricity.The device is batteries.These batteries are not only expensive but will spend a lot of cost for their maintenance also especially, for the PV system.
Anyhow, if you would like to get rid of such a situation and also want to complete independent.There is one solution to this problem is,connect your home to the utility grid, buy power when you will need and selling them when you build or produce than your requirements.In this way you get maximum storage according to your home needs. In most cases the utility have to come to agree to buy power from you at lower price, not according to your wishes.
Therefore you will need a special equipment,so that you have to keep the system in a good situation so that it share the same sinusoidal waveform and frequency.There is a basic issue in this regard is Islanding. This occurs when the grid has failed and the “neighborhood” that the Trace SW inverter is powering requires the same amount of power that the inverter can supply.
This balanced condition is often called “islanding“. The islanding detection circuit checks the grid condition on each cycle. The inverter watches the utility grid and waits for it to rise a couple of volts before it begins to invert again. This is done on each cycle when SELL mode is activated. Typically, disconnection is achieved in a few cycles after the utility has failed. If a large electric motor is connected, it may provide enough generator capacity that the inverter thinks the grid is still connected. This can fool this protective system.
Two additional protective systems are provided to then handle this condition over/under frequency and over/under voltage detection. In this system there is another issue is batteries life,batteries have less life than that of PV modules.PV modules have useful for 20 years or more while batteries don’t have such quality as PV modules.
Batteries size is measured in AMP-Hours.This is a measurement of battery capacity. batteries in PV system can be very dangerous, because of the energy they store and they contain Acid electrolytes so for that reason you will need a well ventilated,non-metallic enclosure for these.There are different kinds of batteries.But the common point in all is that they are all deep-cycle batteries.There is difference between in car battery and PV -battery.A car battery can discharge a large current for very short time only for starting the car,While in driving the car battery is immediately recharged.
A PV battery has to discharged a smaller current for long period and get charged in day-time. The most commonly used deep cycle batteries are Lead-acid batteries and Nickel-cadmium batteries.Nickel-Cadmium batteries are more expensive than that of lead-acid batteries. It is durable and can discharged more without any harm.Lead-acid batteries can’t be discharged completely and have also shortening battery life.PV system are generally designed to discharge lead acid batteries, no more than 40% or 50%. Another component which is also required to installed is Charge controller.
Any time you create a solar panel, the electricity will be channeled through wires into a charging controller. Charging controllers will regulate the flow of the electricity into the battery banks, where the electricity will be stored. This ensures that once the batteries are charges, the electricity flow into them can be cut off, thus preventing the batteries from overcharging, being damaged, or exploding.For long battery life charge controller use is so much essential. Next issue is that the electricity generated by our PV modules and extracted (take out by force) When we use them.This condition of solar power is not used by the electricity appliances in our homes.
Because the solar system generates the Direct current,while the electricity supplied to our utility is Alternating current.Therefore we need a special device which control the system automatically.The device is called an Inverter.Some PV modules are called AC modules,they are built in inverter.It helps to solve the wiring problem.So all these equipments which are used in the installation of solar energy panels,such as PV modules AC and DC disconnect,ground equipments and other accessories.
It is highly recommended the electrical codes must be followed.All the equipments must installed by the help of experienced and licensed electrician.After that when a all work is done properly, then you will get a clean and clear energy for your home needs available for 20 years or more.