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What Is A Solar Charge Controller and Its Purpose.

A solar charge controller manages the power going into the battery bank from the solar array. It ensures that the batteries are not overcharged during the day and that the power doesn’t run back to the solar panels overnight and drain the batteries.

We have two types of solar charge controllers.

1. MPPT SOLAR CHARGE CONTROLLER: An MPPT solar charge controller stands for “Maximum Power Point Tracking”. It will measure the Vmp voltage of the panel, and down-converts the PV voltage to the battery voltage. Because power into the charge controller equals power out of the charge controller when the voltage is dropped to match the battery bank, the current is raised, so you are using more of the available power from the panel.
What Is A Solar Charge Controller and Its Purpose.

2. PWM SOLAR CHARGE CONTROLLER: A PWM solar charge controller stands for “Pulse Width Modulation”. These operate by making a connection directly from the solar array to the battery bank. During bulk charging, when there is a continuous connection from the array to the battery bank, the array output voltage is ‘pulled down’ to the battery voltage. 

As the battery charges, the voltage of the battery rises, so the voltage output of the solar panel rises as well, using more of the solar power as it charges. As a result, you need to make sure you match the nominal voltage of the solar array with the voltage of the battery bank.

If you want more information and advise on solar systems do not hesitate to contact us we are there to ”Make life full of hope”.

Source: Felicity Solar Zimbabwe

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