Variable-frequency drives, or VFDs, are becoming more commonplace in motor retrofits and new installations. And while they boast increased energy efficiency as the main benefit, a small — but by no ...

Many of you have good in-house predictive maintenance departments, and others outsource that work to others. Either way, you routinely know when a bearing is deteriorating, and remove the motor from ...

The use of variable-frequency drives (VFDs) to control ac motors has increased dramatically in recent years: on power generators, gas turbines, wind turbine generators, ac traction and break motors, ...