What is a pump controller?- Pump controllers perform one or more of these functions:
- It acts as a kind of a "transmission" between the solar panels and the pump, matching the output of the panels to what is required by the pump. These type controllers are usually called "LCB's", or linear current boosters. An LCB is a DC to DC converter, and is a form of maximum power point tracking (MPPT). LCB's essentially trade voltage for current, providing more current, especially at lower light levels, to the pump. LCB's will typically give you about 25-30% more water pumping per day than with a direct PV panel to pump connection.
- It provides inputs for water level sensors and float switches, on/off controls, and/or dry well shutoff. These inputs allow such things as remote on/off controls, and shutoff of the pump if the water level is too low or too high.
- Some controllers provide a voltage boost, to run 24 volt pumps from 12 volt battery or panel systems.
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