Solar Power

Solar charge controller and inverter explained

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Solar charge controller and inverter are two different components used in a solar power system.

Solar charge controller

Victron energy charge controller

A charge controller is a device that regulates the amount of electrical current that flows from the solar panels to the battery bank. It ensures that the batteries are charged efficiently and prevents overcharging and undercharging, which can damage the batteries. Solar charge controllers are typically classified as PWM (Pulse Width Modulation) or MPPT (Maximum Power Point Tracking) controllers.

PWM charge controllers work by regulating the voltage of the solar panel to match the battery voltage. They do this by rapidly turning the solar panel on and off, controlling the amount of power that flows into the battery. While this is an effective method of charging, it is less efficient than MPPT controllers because it does not actively track the maximum power point of the solar panel.

On the other hand, MPPT charge controllers are more advanced and efficient. They use a more complex algorithm to track the maximum power point of the solar panel, which is the point at which the panel produces the most power. By doing so, they can extract the maximum amount of energy from the solar panel and convert it into usable energy for the battery.

You can find of the charge controllers here: Solar charge controller

Just make sure that you choose correct voltage level of the target battery is and charge controller output match.


Solar inverter

On the other hand, an inverter is a device that converts DC (Direct Current) power from example the batteries into AC (Alternating Current) power that can be used by household appliances. Inverters are essential for solar power systems because most appliances in homes require AC power. For example you can use inverter in your car to convert the 12 volt DC into 110 volt or 220/240volt AC which you can then use to power for example your laptop.

If you search for the term solar inverter then most of the results you get will also include a hybrid device that has both charge controller as well as inverter in those working together.

Those hybrid devices can be found here: Solar inverters

To summarize, the main difference between a solar charge controller and an inverter is that the charge controller regulates the charging of the batteries, while the inverter converts DC power from the batteries into AC power that can be used by household appliances.