The variable frequency drive (VFD) is the most effective (when applied correctly) motor controller in the industry today. Modern VFDs are affordable and reliable, have flexibility of control, and offer significant electrical energy savings through greatly reduced electric bills.

VFDs provide soft-start capabilities, which decrease electrical stresses and line voltage sags associated with full voltage motor start-ups, especially when driving high-inertia loads.

EDS recommends the variable speed drive, which provides the optimum performance in terms of extraction, operating cost & purchase cost.