The solar energy inverter is an essential item of the solar energy kit, with the function of converting the electrical energy generated by the panels from direct current (DC) to alternating current (AC), in addition to guaranteeing the safety of the system and measuring the energy produced. by solar panels."The solar inverter is the heart of your photovoltaic solar energy system."The solar inverter is the equipment used to convert the energy generated by solar panels from direct current (DC) into alternating current (AC), enabling the use of electrical energy generated by photovoltaic solar energy.None.Solar inverter and photovoltaic inverter are the same thing, only the name changes.In homes, the solar energy inverter is typically installed near the light box, in a place sheltered from the sun, heat and water.In commercial and industrial mini-plants (distributed mini-generation), you can build a room just for them, as these inverters are larger and take up more physical space.The grid-tie solar inverter (or on-grid inverter) is the most used model in the world, being the inverter used to connect an on-grid photovoltaic system to the grid of your home or business, which is designed to quickly disconnect from the electrical grid. in case she falls.Yes, it is possible to connect 99% of the equipment you use on a daily basis, such as computers, washing machines, dryers, lights, etc.Only surgical equipment and extremely sensitive equipment require pure sine wave inverters.That is, it is possible.The string inverter is the grid-tie inverter, the type most commonly used in residential and business solar energy systems.It represents 50% of all solar inverters used in the world.Depending on the size of the installation, there may be more than one string inverter.Want to know how much it costs to install solar energy?Off grid means "off the grid" or "disconnected from the grid".The off grid solar inverter was developed for photovoltaic systems disconnected from the electricity grid, that is, systems that use batteries and are normally in regions where there is no access to the electricity grid.Off grid inverters convert direct current (DC) at 12, 24 or 48 Volts to alternating current (AC) and, in Brazil, they must have a power of 110/220 V and 60 Hz to supply power to conventional electronics and appliances. .The size of the off grid inverter varies depending on the application.The smaller off grid inverters have powers ranging from 150 W to 2000 W, are lightweight and can be easily transported or moved from one system to another.The most powerful off-grid inverters are used to operate equipment with higher energy consumption, such as televisions, refrigerators, machines, electric tools, telecommunications equipment, etc.Off grid inverters above 2000 W are heavier and require permanent installation, having a number of advanced features such as load control, internet monitoring, etc.The hybrid solar inverter allows to operate both connected to the grid and isolated from it.It is like a 2 in 1, that is, a grid-tie inverter and an off-grid inverter together.This is a simple way of explaining a hybrid solar inverter, because in practice they can do much more than that, such as being programmed to inject energy into the grid at times when the energy is worth more and store the energy in batteries when energy is cheaper.Solar microinverter is an inverter designed to operate with a single solar panel.The microinverter converts the direct current power from each panel to alternating current.The advantages of the microinverter reside mainly in the independent operation of each panel.Yes, some companies have this solution in Brazil.Central inverters are designed for large-scale applications such as buildings, installations, industrial photovoltaic systems and solar plants.They are basically one big string inverter.Reliability and efficiency.The greater the efficiency of your solar inverter, the more energy generated by the photovoltaic panels you can use for your home or business, and the more reliable you are, the lower your risk of having a problem with the solar inverter.If you have to choose between one of the two, we advise the inverter that is more reliable, as it is preferable to lose some of the generated energy (1%, 2% or 3%) than having problems with the inverter (unlikely, but it can happen). with low quality inverters).WEG, for example, has one of the most reliable inverters on the market, as do SMA and Fronius.It depends on the power (Watts) (size) of the system you want to install.For example, if you are installing a 4.0kw system on your roof and you have no intention of increasing the number of panels (increasing the generating capacity of the system), then you would need a 4.0kw solar inverter.If you are going to install a 4.0 kW solar system and plan to install more panels in the future, then you can install a larger solar inverter, such as a 5.0 kW or even a 6.0 kW one.Just make sure you have the space on your roof for the extra panels before opting for a larger inverter.In the case of grid-connected systems, you will buy the entire photovoltaic system (panels + inverters + fixing structure + electrical materials + installation and project).Therefore, the inverter price will be diluted.Inverters are mainly priced according to their rated power and various other factors (1.5 kWp, 5 kWp, 100 kWp etc).The larger the inverter, the cheaper the price per power.Example: a 75 kWp inverter can cost BRL 35 thousand, and a 3 kWp inverter can cost BRL 5 thousand.That is, in this case, the 75 kWp inverter costs R$ 467 per kWp, and the 3 kWp inverter costs R$ 1,667 per KWp.Typical, average, grid-tie inverter retail prices (December 2018):Note: the end customer who wants to install a solar energy generator must buy the complete generator (inverter + solar panel + fixing structure + components).Generator has a tax benefit, so this cost of the inverter ends up being reduced.Discover the main brands of solar inverters:Many people speak ill of Chinese inverters and say that European inverters are the best.Europeans have been producing these inverters for solar energy for the longest time, 25/30 years.But that doesn't mean the other inverters aren't good.There are good quality inverters being manufactured in all countries, including Brazil.Follow our tips on this page, the chances of you regretting it are minimal!The most commonly used type of solar inverter is known as a grid tie inverter, these are the inverters used to connect your photovoltaic solar energy system to the electrical grid.The main role of the solar inverter (grid tie inverter) in the system is to reverse the electrical energy generated by the solar panel from direct current (DC) to alternating current (AC).Its secondary role is to ensure the safety of the photovoltaic system and generate power generation data for monitoring the performance of your system.Yup.You can have up to 15% more installed power (number of panels) than the rated power of your inverter.Ex: you can have 2.3 kWp of panel for a 2 kWp inverter.This is because your PV panels will never produce their full power (due to heat losses and other factors).Typically this is not ideal, and your PV system will not perform well – save for a few exceptions where the inverter is designed to do this.In general, the ideal is that the total power of your panels is 20% to 40% greater than the rated power of the solar inverter.Firstly, a solar inverter is characterized by its function of converting direct current (DC) to alternating current (AC) in a photovoltaic system.Therefore, the equipment operates as a power adapter and ensures the safety of the system in a solar panel, for example, in addition to the possibility of optimizing the energy produced and monitoring it.In this sense, its efficiency level for the best use in your residence or establishment must be at least 94%, aiming at energy savings.Therefore, inverters can be installed in different areas, such as in solar panels, which we mentioned above, or close to the light box of the property.However, the installation of the kits must be done according to the customer's needs, since they can be fixed in strategic places to monitor the energy production in a constant way or even at a certain distance to avoid the emission of noise.Therefore, we have three main types of inverters that can be used in your photovoltaic system:Most solar inverters in Brazil are quite reliable, but not all.To make sure you are buying a reliable solar inverter, here are some facts and information that you should consider before making your choice:Transformerless solar inverter is a lighter inverter and generates less heat (better for enclosed areas).They are also reputed to be more efficient in the DC to AC conversion process.In Brazil, several distributors require you to use inverters with transformers.Talk to your installer to find out which one is right for you.Presented in standard NBR IEC 60529 - Degrees of protection for enclosures of electrical equipment (IP codes).This is very important if your solar inverter is going to be installed outdoors.There are different degrees of protection, the recommended for open places is from IP 55.The efficiency of your inverter is measured in %, indicating how efficient this inverter is at converting solar energy from direct current (DC) to alternating current (AC), which will be used in your home or business.The efficiency of a solar inverter for grid-connected systems varies, with 94% being the minimum acceptable efficiency.The higher the efficiency of the solar inverter, the better.For those who really like the idea of ​​owning their own "solar plant" and have a keen interest in IT, the possibility of connecting your solar inverter to the computer can be interesting, as this makes it possible to monitor the system's performance in real time from anywhere in the world, generating graphs and comparisons.Most solar inverters already have a display where you can monitor system performance, so computer connectivity may be unnecessary for some.All solar inverters come standard with a 5-year warranty, and most manufacturers offer the option to extend the warranty up to 10 years.Some solar inverters already come with a 10-year warranty.Remember: having the biggest warranty doesn't mean the solar inverter is more reliable.The most important thing is that this solar inverter has a national guarantee and that it is from a company with a proven reputation.Tip: ask your installer what the procedure is if the solar inverter has a problem (you don't want to put your inverter in the mail and send it to Europe and wait 3 months until you receive a new one!).Tracking is as if there were two or more solar inverters inside one, it allows you to have panels facing two or more different sides in the same system.Example: you intend to install a 5kw system on your property, there are two faces available facing different directions, but the space of a single face is not enough for the 5kw of panels, so you will divide the system into 2.5kw of one side of the roof and 2.5 kW on the other side of the roof.This is only possible with solar inverters that have dual tracking.If you are going to install all panels on a single face, double tracking is not necessary.Another utility of the inverter with more MPPTs is to reduce the negative effect of partial shading.That's why microinverter is a great solution for a roof with many faces or shaded.The Photovoltaic PBE was implemented on a compulsory basis through Inmetro Ordinance No. 4, of January 4, 2011, complemented by the criteria established in Inmetro Ordinance No. 357/2014.The purpose of this legislation is to establish rules for photovoltaic solar energy inverters.IMPORTANT: Just because your inverter isn't here doesn't mean it isn't good.Today there is a big delay on the part of certified laboratories, so most inverters are not yet on this list.If you have questions about the photovoltaic inverters you intend to buy, please contact us and we will try to help you.Download the PDF of Inmetro's list of photovoltaic inverters.Find our nearest unit to assist you in the production of solar energy!The Solar Portal is present throughout Brazil.To know all the information about your photovoltaic system, consult our Solar Simulator and get a free quote with us!Portal Solar is the first and largest solar energy portal in Brazil.Request a free quote and reduce your electricity bill by up to 95%.Find the unit closest to you and start saving now!Solar Portal © 2014-2022.All rights reserved.