Variable-speed pump systems — VFD, MPPT and constant-pressure control
Variable-speed (VFD) pump systems for chilled water, condenser water, booster sets, process loops and solar pumping. Match flow to demand in real time and cut pumping energy 30–50%.
- VFD drives 0.75–500 kW, IP21 / IP55 / IP66 enclosures
- Constant-pressure, constant-flow and PV-tracking (MPPT) control modes
- Duty/standby / duty-assist multi-pump orchestration
- Modbus / BACnet / EtherNet-IP for BMS integration
- Danfoss, ABB, Siemens, Schneider, Grundfos CUE, Wilo EFC, Xylem Hydrovar
Where VFD pumping delivers value
Variable-Speed Pump Systems — frequently asked
How much energy does a VFD really save on a pump?
Pump power scales with the cube of speed (affinity law), so a 20% flow reduction cuts power ~50%. Real-world chilled-water and booster-set retrofits typically save 30–50% annually, with 1.5–3 year payback at industrial tariffs.
Can any pump be retrofitted with a VFD?
Most centrifugal pumps with IE2+ inverter-duty motors can be VFD-controlled. Check motor insulation class (Class F recommended), add dV/dt or sine filters for long cable runs, and verify minimum flow to avoid overheating at low speed.
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