What is a micro inverter
Micro inverter is an inverter used in photovoltaic power generation systems, typically with a power of less than or equal to 1000 watts, and equipped with component level maximum power point tracking (MPPT) function. It is a power converter that can convert direct current into alternating current, and its full name is micro photovoltaic grid connected inverter.
'Micro' is relative to traditional centralized inverters. The traditional photovoltaic grid connection method is to connect all the direct current generated by photovoltaic cells under sunlight in series and parallel, and then use an inverter to invert the direct current into alternating current and connect it to the grid; Micro inverters invert each solar panel.
main features
1. Security
Traditional centralized inverters or string inverters typically have direct current voltages ranging from several hundred volts to thousands of volts, making them prone to catching fire and difficult to extinguish once ignited. Micro reverse only has a DC voltage of a few tens of volts, all connected in parallel, minimizing safety hazards to the greatest extent possible.
2. Intelligent
Component level monitoring allows you to see the working status of each component in the ECU.
3. Generate more electricity
Component level MPPT, without barrel effect, reduces the impact of obstruction on power generation; The weak light effect is good because the starting voltage is low, only 20V, and it can also work under weak light conditions.
4. Long lifespan
The typical lifespan of micro inverters is 25 years, while traditional inverters have a lifespan of 10 years.
5. Convenient and aesthetically pleasing
There is no need to build a dedicated distribution room. The micro inverter can be directly installed behind the components or on the brackets because it is a parallel structure. It can be installed directly when the scale is increased later without changing the previous configuration.
6. Compact appearance
Compact and beautiful in size, can be directly installed on components or brackets, and is lightweight.
Working principle of micro inverter
The working principle of a micro inverter mainly includes three steps: DC input, power modulation, and AC output.
Firstly, solar panels convert solar energy into direct current and input it into a micro inverter;
Secondly, the micro inverter converts DC power into AC power and modulates the output voltage and frequency to meet the national standard grid voltage and frequency;
Finally, the micro inverter outputs the modulated AC power and connects it to the grid, providing users with stable electrical energy.
In addition, micro inverters also have various protection functions, such as overvoltage protection, overcurrent protection, short circuit protection, etc., which can effectively ensure the stable operation of the power generation system and the electrical safety of users.
In short, micro inverters are important devices that can convert the direct current generated by solar photovoltaic power generation systems into alternating current. They have the characteristics of high efficiency, intelligence, and safety, which help promote the widespread use of solar photovoltaic power generation in household applications.
