Tower fan control

A new direct drive technology from Baldor for controlling commercial building cooling tower fans is claimed to improve reliability by eliminating moving parts, while also saving energy and running quieter.

Based on a permanent magnet motor, it packs the high torque required into such a compact space that it can be retrofitted into cooling towers - sitting underneath the fan in the space currently required for the gearbox element of conventional power transmission systems.

Baldor's solution provides direct slow-speed drive combined with variable speed control. The permanent magnet synchronous motor uses energy efficient technology that, in combination with the elimination of the gearbox and drive train transmission losses, results in higher efficiency.