Configuration and selection of solar controller

The configuration and type selection of the solar controller should be determined according to the technical indicators of the entire system and refer to the product sample manual provided by the inverter manufacturer. Generally, the following technical indicators should be considered:

1. System working voltage
Refers to the working voltage of the battery pack in the solar power generation system. This voltage is determined according to the working voltage of the DC load or the configuration of the AC inverter. Generally, there are 12V, 24V, 48V, 110V and 220V.

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 module or square array. When modeling, the rated input current of the solar controller should be equal to or greater than the input current of the solar cell.

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 only have one solar cell array input, and high-power solar controllers usually use multiple inputs. The high current of each input = rated input current/input number. Therefore, the output current of each battery array should be Less than or equal to the maximum current value allowed by each channel of the solar controller.

3. The rated load current of the solar controller
That is, the DC output current output from the solar controller to the DC load or inverter, and the data must meet the input requirements of the load or inverter.