Technicians should determine the configuration and selection of the solar controller according to the various technical indicators of the entire system and the product sample manual provided by the inverter manufacturer. Generally, it would be best if you consider the following technical indicators:
1. System working voltage
2. Rated input current and number of input channels of the solar controller
The rated input current of the solar controller depends on the input current of the solar cell component or the square array. The rated input current of the solar controller should be equal to or greater than the input current of the solar cell during modeling.
The number of input channels of the solar controller should be more than or equal to the design input channels of the solar cell array. Low-power controllers generally have only one solar cell array input. High-power solar controllers usually use multiple inputs. The maximum current of each input = rated input current/number of input channels. Therefore, the output current of each battery array should be Less than or equal to the maximum current value allowed for each channel of the solar controller.
3. Rated load current of the solar controller
The DC output current that the solar controller outputs to the DC load or inverter, and the data must meet the input requirements of the load or inverter.
In addition to those mentioned above, primary technical data to meet the design requirements, environmental temperature, altitude, protection level, external dimensions, and other parameters, and manufacturers and brands.
