Current flows into two types: AC (alternating current) and DC (direct current). Current flows steadily forward, while the alternating current, the electrons change directions, forward and backward place. The strength you have in your home every time a device is alternating current. Although it would seem that a DC would be more efficient electricity through the power of travel without losing energy, and is also capable of transferring different amounts of energy. Another advantage of the ACThe power is that it can be easily pushed up or down in the power of a transformer, which is on electric poles and makes the flow in the lower voltage to be changed for appliances such as refrigerators, lamps, toasters and microwaves .
An inverter is a necessary part of your PV system, because it takes the electricity still produced by your solar panels and stored in your battery bank and converts it into electricity needed to run the household. A good quality inverterOff-grid system costs about 25% of the cost of the entire system, while an on-grid inverter is about 10% of total costs.
12-volts, 24 volts or 48 volts
Although a 48-volt inverter will probably require a major investment, which has advantages such as increased tension, less tension loss, the ability to use a smaller wire diameter and longer distances from the wire without the level of the fall voltage to run as a 12 or 24 - volt. If you are simply adding enoughRun the solar energy at home just a few items, you can get a 12 or 24 volts, if you are serious are my changes, your whole house to solar energy, spend the extra money and buy a 48-volt inverters . Outback, Xantrex, Sunny Boy and Magnum are all high quality 48-volt inverter.
Sine wave vs. modified sine wave
AC has a voltage in continuous evolution, which is positive to negative fluctuations, one hertz (Hz) is the number of times the ACchanges in a second. Most US-inverter to convert 120 volts at 60 Hz, while others prefer the power supply of 220 volts at 50 Hz. Most of the devices in the average home can be AC or modified by a quasi-sine wave inverters to run, and the modified sine wave inverter is better anyway. However, the current trend for PV inverters pure sine wave, while the majority of electrical equipment can be run on modified sine waves, do not like. Modified sine waves because fans motorsrefrigerators and compressors to run the electronic warmer and stronger, and high-end as televisions, computers and printers are not able to filter the waveform dirt. What this means for you is that if you could choose to have a modified sine wave inverter lines screen TV in it, the stereo could not sing and disturbing the washing machine able to successfully complete the cycle. Pure sine wave inverters are a better choice if you're in a situation in which we live much useSome electronic devices on a daily basis.
Continuous power output or peak
Finally, check the inverter carefully chosen specific performance is to examine whether continuous or surge. The answer to this question is very important because the electric motors in your home devices such as fans, blowers, mixers and refrigerator and all the devices and go out six times a day, normal operating performance must begin. The inverter mustable to handle the additional load, or start a good portion of the devices may not be able to.
Your final consideration is whether the creation of a grid-tie solar PV system, or go completely off-grid. Select a different type of inverter, depending on the application. You can expect $ 1,800 to $ 4,000 to spend on a good quality inverter that works with the photovoltaic system, and the last for many years.
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