What is the core of photovoltaic power generation？

The inverter is the "heart" of photovoltaic power generation. The photovoltaic inverter is a power electronic conversion device that connects the solar panel and the grid. The main function is to convert the direct current generated by the solar panel into the alternating current that can be connected to the grid through the power module.

From the necessity of the inverter, the energy generated by the photovoltaic array is direct current, but the direct current power supply system has great limitations, it is not convenient to convert the voltage and the application range of the load is very limited. The inverter can convert the direct current generated by the solar panel. For the AC power required for life, the inverter is an indispensable core component in the photovoltaic power generation system.

From the perspective of the importance of the inverter, the reliability and safety of the inverter are directly related to the smooth operation of the entire solar power generation system, which is embodied in:

(1) Its conversion efficiency will be directly related to the power generation efficiency of the solar photovoltaic power generation system;

(2) Its service life will directly affect the service life of the photovoltaic power generation system, and the conversion efficiency and service life will further affect the investment return rate (IRR) of the photovoltaic power station project.

To sum up, the photovoltaic inverter is of irreplaceable importance in the entire process of photovoltaic power generation and grid connection, and is the "heart" of the solar photovoltaic power generation system.

The inverter is the "brain" of photovoltaic power generation. With the continuous improvement of the overall technology of each link of the photovoltaic industry chain and the proposal of the concept of superimposed smart power station, the photovoltaic inverter not only has the function of converting direct current into alternating current, but also carries more intelligence such as information collection, power station monitoring, and manual interaction. application needs. Specifically:

(1) Information collection: The inverter can detect and record all fault information related to the power grid and the photovoltaic system, such as the grid voltage is too high/low, the grid frequency is too high/low, the photovoltaic grid-connected inverter is overloaded/overheated, and the communication fails , leakage protection, insulation fault, etc.;

(2) Power station monitoring: the inverter can upload various detected fault information to the user's monitoring equipment;

(3) Human-computer interaction: the inverter uploads data to the network server or local computer through GPRS, Ethernet, Wi-Fi, etc., and conducts large-scale data interaction with the cloud platform, so that users can connect to the Internet, mobile phones or computers. See related data here.

From the perspective of the importance of the intelligent attributes of inverters, the development trend of inverter digitization and intelligence makes it more convenient for power station managers and users to view and manage the operation data of photovoltaic power stations, and greatly reduce labor and material costs.

In summary, the inverter is the core component of the entire industry chain with extremely intelligent characteristics. It is the only intelligent device in the photovoltaic system that has multiple digital functions and is directly connected to the power grid. It is the "brain" of the solar photovoltaic power generation system.