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Charge controller
Solar radiation is continually variable so that the PV voltage is also variable, the more voltage the solar cells produce, and the excessive voltage could damage the batteries. A charge controller is used to keep the suitable charging voltage on the batteries. As the input voltage from the PV rises, the charge controller regulates the charge to the batteries preventing any overcharging.
Features of Solar Charge Controller
- Protects the battery from over charging
- Reduces system maintenance and increases battery lifetime
- Auto charged indication
- Reliability is high
- Monitors the reverse current flow
Function of Solar Charge Controller
The most essential charge controller basically controls the device voltage and opens the circuit, halting the charging, when the battery voltage ascents to a certain level. More charge controllers utilized a mechanical relay to open or shut the circuit, halting or beginning power heading off to the electric storage devices.
Generally solar power systems utilize 12V of batteries. Solar panels can convey much more voltage than is obliged to charge the battery. The charge voltage could be kept at a best level while the time needed to completely charge the electric storage devices is lessened. This permits the solar systems to work optimally constantly. By running higher voltage in the wires from the solar panels to the charge controller, power dissipation in the wires is diminished fundamentally.
The solar charge controllers can also control the reverse power flow. The charge controllers can distinguish when no power is originating from the solar panels and open the circuit separating the solar panels from the battery devices and halting the reverse current flow.