Slowing down the fan saves the unneeded air flow and saves the horsepower of the fan, which saves money. The device that controls the fan speed is called a variable speed drive. Variable frequency ...

The way we control the speed of fan motors or pump motors has tremendously changed in the past two decades with the introduction of variable-frequency drives (VFDs), aka variable-frequency controllers ...

Electrohydraulic variable speed drives (VSDs) stand out as a versatile solution to this challenge, particularly in sectors such as plastics processing and machine tool applications. Electrohydraulic ...