Big fan drives offer much simplified power trains

摘要

First introduced in 2009, Baldor's direct drive system has delivered a more efficient method for controlling cooling tower fans, eliminating the gearboxes and right-angled couplings of conventional drives in order to save energy, improve reliability, and ensure quieter running. The elimination of gearbox losses is aided by the use of a novel permanent magnet based motor that has a very positive impact on energy efficiency. This construction reduces the size of the motor substantially, allowing it to sit beneath the fan in the space currently required for the gearbox element of a conventional power transmission system.