Before the rise in the photovoltaic industry , inverters or inverter technology is mainly applied to such as rail transport , power and other industries. When the photovoltaic industry after the rise of the PV inverter into a new energy power generation system in the core equipment , followed by the familiar . Especially in Europe and developed countries , as the concept of energy saving deeply rooted , carried out earlier PV market , especially the rapid development of domestic PV systems , in many countries , home inverter has been used as a household penetration rate higher .

PV inverter direct current generated by the PV modules into alternating current fed into the grid after the inverter determines the performance and reliability of power quality and power generation efficiency, so the entire PV inverter PV system is a core position.

Generally, from the relationship between the inverter and the grid to classify , photovoltaic inverter will be divided into the following main categories: grid (Grid-connected) inverters ; churn (Solo) inverter ; bidirectional (Bi-direction) inverter ; micro-grid (Smart grid) inverter.

Among them, grid-connected inverter in all categories occupy a major share of the market , but for all inverter technology development a start. Compared to other types of inverters and inverter technically relatively simple , focusing on photovoltaic power input and output , can be safe, reliable , efficient and high quality output power has become a key measure of such inverters technical indicators.

Developed in different countries photovoltaic inverter http://www.gridtiepowerinverteronline.com/ grid technical conditions , the above points become the standard measure of points in common , of course, the details of the parameters are different. For grid-connected inverter, all the technical requirements are around to meet the power requirements of distributed power generation system expanded , more demands from the grid to the inverter 's request that a top-down requirements, such as voltage, frequency specifications , power quality requirements, a security , fault time control requirements.

And how the grid , into what voltage level of the grid , etc. requirements, so grid inverter is always to meet the requirements of the grid can be, it does not come from inside the power system requirements . And technically , the very important point is that the grid inverter is " grid " that meet the conditions that generate electricity grid , the grid itself, it does not assume the stability , security and other issues, does not involve to the photovoltaic energy management problems within the system , so it is simple .

Like its electricity generated as a business model to a simple . According to foreign statistics , has been building and running of photovoltaic systems , about more than 90 % of all photovoltaic systems are used in a grid-connected inverter .