When an application requires changes in motor speeds to meet its objectives, a variable frequency drive (VFD) is often the first thing that comes to mind. This is for good reason—VFDs are typically ...

A Variable Frequency Drive regulates the speed of a 3-phase AC electric motor by controlling the frequency and voltage of the power it delivers to the motor. Today, these devices are becoming ...

For all their energy savings and control benefits, when VFDs fail, they bring motor-driven industrial operations to a dead stop. To avoid such situations, savvy engineers ensure drive-system ...

Abstract: The failure rate of motor insulation in variable frequency drive (VFD) motors is higher compared to that of mains-fed motors due to the increased electrical stresses inflicted by the VFD. At ...