Solar Powered Commercial DC Pool Pump

The pool pump system being evaluated is a hybrid AC and solar powered DC system. A DC pool pump is directly fed by PV panels installed on the roof of a building. An automatic digital motor controller changes the torque and speed of the DC motor based on the input power coming from the PV panels. The system also has automatic controls which engage a secondary AC pool pump with a Variable-Frequency Drive (VFD) to supplement any flow loss due to decreased power from the PV panels. This ensures the minimum commercial pool water turnover requirements are met. This project is a field evaluation. The energy savings potential will be determined and the system’s ability to meet minimum commercial pool water turnover requirements will be verified.