The scenario
A 10 kWp solar array feeds a VFD that drives a 7.5 HP three-phase submersible pump. The system is direct-coupled with DC isolation, surge protection and a DC-link capacitor for stable operation.
What is in this drawing
Read the decisions behind it.
01
Direct-coupled PV array without battery storage
02
VFD converts DC to three-phase AC for soft-start and motor protection
03
DC disconnect and fuse protect the array and inverter input
For off-grid farm irrigation where solar PV drives an AC submersible pump directly; adapt array kWp and VFD rating to pump size.
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