What are the factors to consider when choosing a solar controller?

Update:2020-10-23
Abstract:

The solar controller is a relatively important device i […]

The solar controller is a relatively important device in the photovoltaic power generation system. It is very important to choose a suitable and powerful solar controller.
1. The voltage of the solar panel
We only need to pay attention to the working voltage and short-circuit voltage of the solar panel of the PPT solar controller, working voltage: such as 18V, 36V and so on. There is also a short-circuit voltage. If it is 18V, the short-circuit voltage of the solar panel should be 22V, and that of 36V should be 42. We can choose the corresponding solar controller according to the working voltage of solar energy.
Second, the current of the solar panel
The size of the PPT solar controller we often talk about is actually how many amperes of current the solar controller has (the maximum charging current). The general controller will have 10A, 20A, 30A, and some high-power ones will have 50A, 60A will even have a large amount. When selecting, the current charged by the solar panel does not exceed a value, otherwise the controller will be damaged. Therefore, when choosing a controller, I suggest that if the solar panel current is 6A, we should choose a 10A controller.
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