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Variable frequency drives (VFD) can offer many benefits to pump stations by helping to protect and extend the life of the pump(s) and other components in the pump station.

A pump will normally run at full speed based on the frequency of the supply voltage, which remains at a constant. When a VFD serves as the power supply for the pump motor, it can adjust the frequency of the supply voltage, enabling the pump to operate at various speeds and transition smoothly from one speed to another as needed.

Therefore, VFDs are very efficient in applications where the flow, density, and/or viscosity of the media may vary quite often because the pump speed can be controlled to match the variable demand of the media being pumped.