As long as the voltage is under these values, the right MPPT controller is easy to find.
The Solar panels input voltage of the MPPT solar controller is generally about 0~150V, and the input voltage of the PWM solar controller is generally 0~55V. So, when choosing a controller, we recommend that if the solar panel current is 6A, we should choose a 10A charge controller. When selecting the controller, please note that the discharge current of the solar panel cannot exceed this value otherwise the controller will be damaged. Even greater, 80A Solar Controller and 100A Solar Controller are also common. Some high power controllers can also handle 50A, 60A current. In the market, generally, a solar controller will have 10A, 20A or 30A sizes. The size of the solar controller is often in the name of how much current the solar controller handles (that is, the maximum charging current). Usually, when you buy the solar panels, you will have all the parameters correspondingly. We need to choose the right controller according to the working voltage of the solar panels. If the working voltage is 18V, the short-circuit voltage of the solar panel should be 22V, similarly if 36V the short-circuit voltage should be 42V.
Working voltages normally are 18V, 36V and so on. Solar Panels VoltageĪs per the Solar panels, we need to pay attention to the working voltage and short-circuit voltage. When choosing the right MPPT solar controller, we have to pay attention to 2 aspects: the current of the solar panel and the voltage of the solar panel. With the rapid technological advancements, there are various types of MPPT solar charge controllers. The Principle to Size MPPT Solar Charge Controller?