- Dec 07, 2017 -
As we all know, appear on the market in recent years a large number of solar system, its core part is one of the photovoltaic controller, we do not know whether you know of PV controller. The photovoltaic controller is mainly composed of four parts: switches, meters, relays and indispensable electronic components. The main function of the controller is to determine whether the battery has reached overcharging or over discharging points, and then make corresponding control according to the specific circumstances. So, how to choose the configuration and selection of the photovoltaic controller?
(1) the operating voltage of the system.
The voltage of the solar power system is mainly determined by the configuration of the AC inverter or the working voltage of the DC load, and the most suitable voltage is 12V, 48V, 220V and 110V.
(2) the rated input current and input channels.
At the time of configuration selection, the rated input current of the controller should be equal to or greater than the output current of the solar cell.
(3) rated load current.
That is, the controller outputs the DC output current to the DC load or the inverter, which satisfies the input requirements of the load or the inverter.
To sum up, when the configuration selection of the controller, the working voltage need to consider the main technical indicators including controller rated load current and solar power generation system and its rated input channels and current etc.. In addition, we should give full consideration to the necessary use of environmental temperature and dimensions and other factors.