Solar Inverters

About Solar Inverters

Solar electric systems, also known as photovoltaic systems, are complex assemblies designed to collect and supply solar energy as a source of electric power. They consist of several components, from solar panels that absorb the rays to solar inverters that convert the current.

A solar inverter is a device that shifts power from the solar panels into functional power. It's a box that sits on the wall or roof, taking the DC (direct current) generated by the panels and transforming it to AC (alternating current). As the essential, complex component of the system, it's also the most sensitive piece that often fails first.

Applications

While solar inverters are intended for outdoor installations and typically weatherproof, they still don't put up well with excessive heat. In fact, such exposure can result in degrading both the lifespan of the inverter and its overall performance. Ideally, they should be installed near the main switchboard, on a shaded part of the wall. Alternatively, it's also possible to use a specialised awning attached above the inverter, or even a weatherproof housing that completely encases the device. 

String inverters can be a tempting theft target when located in an easily accessible area. FOr that reason, it's best to install them inside a fence or locked gated area whenever possible. 

Types of Solar Inverters

String Solar Inverters 

This is the most common, most affordable, and simplest inverter type, comprising one or several solar panel strings connected to it. It typically attaches to an external wall in the proximity of the switchboard.

The disadvantage of string models becomes prominent when one of the connected panels underperforms. Due to the sequence connection, what happens with one panel affects all the rest. The culprit can be shade, heavy downpours, or a variety of fails. However, if there is no shading problem and the system is well maintained, the user will probably not experience any significant problems with the power delivery.

Micro Inverters

This system is based on equipping each panel with its own microinverter rather than relying on one inverter for the whole set. Its installation is less affordable than strings, but the system as a whole performs slightly better. Microinverters also have different downsides than string inverters: if one panel underperforms, the others keep their levels. However, they are all placed on the roof and exposed to weather - if a device fails, it will need a professional replacement.

Microinverters are great for use in areas with unavoidable shading throughout the day, or those that can't take large strings due to the shaping. They also allow flexibility for expansion by adding more solar panels.

Hybrid Inverters

Hybrid systems are based on string inverters with the possibility of adding a storage battery. They come at a higher price but also ensure the system will keep running even during a blackout. The only thing to consider before buying this type is compatibility. A hybrid inverter might be "battery-ready", but the future choice of a battery may prove severely restricted. 

Battery Inverters

These models are designed for use with the existing solar systems in need of a solar storage battery. They allow the user to simply upgrade their sets rather than swapping them for a hybrid model. 

Some batteries already feature a built-in AC battery inverter, making it a perfect choice for upgrading microinverter systems. 

Warranty and Maintenance

An average inverter should last at least five years, but many models boast a life span of ten years or more.  

It's also possible to obtain extended warranties for an additional price. 

Once installed, the inverter requires very little maintenance apart from keeping it clean. Regular wiping will release it from any accumulating cobwebs, dust, or debris. It's also strongly recommended to frequently check and clean the cooling fan, in order to keep it in the optimum condition for regulating the inverter's temperature. The same applies to the air intake filter - except that it requires a skilled professional.

Things to Consider Before Buying Solar Inverters

Power optimisers can be implemented into a string inverter system, and their role is to maximise the functionality of the set. An optimiser attached to a solar panel stabilises the power delivery in case of shading, soiling, or failing of the panels, preventing the issue from affecting the rest of the string's output.

Inverters are available in a range of additional features, from a simple visual panel check to smart software monitoring. A display panel will typically show a range of other data, including current power production, long term information, and others. It helps to prevent significant issues by noticing the early signs, at the same time allowing the user to adapt its electricity consumption and maximise the utility of available solar power. 

Indicator lights serve to notify the user whether the system is running normally and feeds power to the grid, or it experiences a failure. 

Many optimisers and inverter models also offer Wi-Fi or Bluetooth links for enhanced monitoring and control. The complete performance is logged and saved in an app or a website, providing insights into daily power production, a seasonal average, and more. This method, however, requires additional security measures for online connections, including encryption and passwords.

If you need assistance to find the right solar inverters for your home or office, ArchiPro provides a connection to the various professionals, ready to assist with all requirements and questions. Simply click "Contact supplier" on the product's page, or visit the supplier's website directly from the product's page.