vfd

If you're looking for a drive to run a water pump off solar panels, you've likely come across two options: a solar pump inverter and a regular VFD (variable frequency drive). They look similar, both control motor speed, and their spec sheets often overlap — so which one do you actually need? The short answer: they solve different problems. This guide breaks down exactly how they differ, where each one excels, and how to choose the right device for your application.