What are the inverter types of On-Grid Solar Inverters?

On-Grid Solar Invertersare generally divided into photovoltaic On-Grid Solar Inverters, power generation On-Grid Solar Inverters, power equipment On-Grid Solar Inverters, and other power generation equipment grid-connected inverters. Due to the diversity of buildings, it is bound to lead to the diversity of solar panel installations. In order to maximize the conversion efficiency of solar energy while taking into account the beautiful appearance of the building, this requires the diversification of our On-Grid Solar Inverters to achieve the best Way of solar energy conversion. At present, the more common On-Grid Solar Inverters in the world are centralized On-Grid Solar Inverters, string-connected solar inverters, multi-string On-Grid Solar Inverters, and component inverters. Let us take a look at the types of these On-Grid Solar Inverters.

Centralized On-Grid Solar Inverter

String and Grid Solar Inverter

Centralized On-Grid Solar Inverter

Centralized On-Grid Solar Inverters are generally used in the system of large photovoltaic power stations (>10kW). Many parallel photovoltaic strings are connected to the DC input of the same centralized inverter. Generally, three-phase ones are used for high power. IGBT power modules use field-effect transistors with lower power and use DSP conversion controllers to improve the quality of the generated electric energy so that the centralized On-Grid Solar Inverter is very close to the sine wave current. The biggest feature of the centralized On-Grid Solar Inverter is the high power and low cost of the system. However, it is affected by the matching of PV strings and partial shading, resulting in the efficiency and power capacity of the entire PV system. At the same time, the power generation reliability of the entire photovoltaic system is affected by the poor working state of a photovoltaic unit group. The latest research direction of centralized On-Grid Solar Inverters is the use of space vector modulation control and the development of new topological connections of On-Grid Solar Inverters to obtain high efficiency under partial load conditions.

On the centralized On-Grid Solar Inverter, you can attach a photovoltaic array interface box to monitor each string of photovoltaic sailboard strings. If one of the strings is not working properly, the system will transmit this information to the remote on the controller, this string can be stopped through remote control at the same time so that the failure of a string of photovoltaic strings will not reduce and affect the work and energy output of the entire photovoltaic system.

String and Grid Solar Inverter

The string On-Grid Solar Inverter takes the advantage of centralized inverter and string inverter and avoids its shortcomings. The string On-Grid Solar Inverter can be applied to photovoltaic power stations of several kilowatts. In the multi-string On-Grid Solar Inverter, different individual power peak tracking and DC-to-DC converters are included. These DCs are converted into AC power through a common DC-to-AC string On-Grid Solar Inverter, the string and On-Grid Solar Inverters are connected to the grid. Different rated values of photovoltaic strings, such as different rated power, different number of components in each string, different manufacturers of components, etc., photovoltaic modules of different sizes or technologies, and strings of different directions, such as East, South and West, different inclination angles or shadows, can all be connected to a common On-Grid Solar Inverter, and each string is working at their respective maximum power peak. At the same time, the length of the DC cable is reduced, and the string-connected solar inverter minimizes the shadowing effect between the strings and the loss caused by the difference between the strings.

Shenzhen Sunray Power Co., Ltd. is committed to the production and sales of On-Grid Solar Inverters. The development of On-Grid Solar Inverter products is very good, and the products are well received. The products have undergone a lot of tests before leaving the factory, and they are well built. If you are interested in On-Grid Solar Inverters, you can contact us at https://www.sunrayups.com/.