A complete solar system is consist of 3 important part
1. Photovoltaic panels
2. Aluminium alloy bracket
3. Inverter
Inverter is actually the most important components of a PV system because of the technology is various and complex where may cause problems usually, so people will pay more attention to choose a right and suitable one.
The inverter converts the direct current (DC)generated by the Solar panel system into alternating current (AC) that can be used in the home, such as TVs, fridges and washing machines. Therefore, the role of the inverter is essential.
String inverter vs micro inverter
How many types of power inverters are there? There are 2 common types of inverters, string inverters and micro inverters. string inverters are large and are often install by hanging on the wall in terms of size and mounting, while the size of micro inverters equals to a book and are often installed underneath the photovoltaic panels.
Installation of microinverters
PV panel is usually a low-voltage access to a micro inverter, one or two PV panels , 400W and 800W power is the common model on the market, and can be connected to the home socket for the use of electrical appliances, and can achieve modular management, accurate monitoring of the daily operation of each PV panel.
String inverters, on the other hand, usually require all the panels in a project to be connected in series to form a high DC voltage, which can be connected together to a single inverter machine for unified management, and the operation of the system can be monitored and controlled from the inverter's screen panel or from the mobile phone.
Inverter price
Micro inverters are more expensive than string inverters with the same power.
For example, for a 6000W home PV project, the cost of a microinverter is often 2-3 times higher than that of a string inverter.
What are the benefits of microinverters?
1. Unaffected by shadows
micro-inverters often enable modular monitoring of the smallest unit of PV panels, so that when a PV panel in a PV system is obscured by shadows, it does not affect the power generation of other PV panels, thus maximizing the benefits of economic transformation.
The advantages of microinverters are particularly evident in the case of houses with multiple orientated roofs where PV panels need to be installed.
2. Easy installation
Easy to install, micro-inverters are often found in balcony solutions, and consumers in European countries can achieve DIY installation, eliminating the long waiting period for booking an electrician to install the system, and achieving the lowest installation costs.
3. Easy Trouble shoot
Each micro inverter is correspond to each panel , we can achieve a modular monitoring in this system, easily know which panel has a problem through the application, shows when system anomaly by saving time, it also will not affect other entire system by single inverter issues.
4. Long life span
Compared to the lifespan and warranty terms , microinverters has a better performance with 25 years lifespan while String inverters with 3-5 years
5. Easy system expansion
Microinverter can be more flexible when you want to add more panels to a whole systems and there is no limitation of the numbers of the sets.
When you want to add more panels to increase the daily electricity generation in String inverters system, you need to considerate the voltage range limitation of the string of all panels, when in expansion construction, it should be connect all panels together to inverters again so the steps are more complicated.
Which brand of micro inverters recommended?
The lightweight design of LESSO's micro inverters is 30% lower than traditional micro inverters, which effectively reduces the cost of transport and labour, the highly efficient waterproof IP68 rating can effectively withstand the changing and complicated weather, and the self-intelligent APP can monitor each module in real time.
Self-developed Sub1G module, allowing good communication signals through the wall, compared to traditional wifi signals through the wall more strongly.
Support high voltage range, choose the type of PV panels as you like.
25 years service life, after-sales service, comparable to string inverters in terms of cost performance.
