Danfoss Turbocor Compressors

Highly efficient Turbocor compressors

Turbocor, oil-free compressors incorporate an inverter-driven, permanent magnet motor and magnetic bearings.

Traditional induction motors of this size are typically around 92% efficient. However, with its completely integrated variable-speed drive, the Turbocor compressor’s permanent magnet DC motor offers an efficiency of between 96 to 97%.

Variable speed drive

The variable-speed drive varies the frequency between 300 and 800Hz, providing a compressor-speed range from 18,000 to 48,000 rpm as well as eliminating the need for an energy-consuming gear set.

Efficiency is further enhanced with magnetic bearings which avoid the friction typically associated with traditional oiled bearings (magnetic bearings have over 500 times less frictional losses than conventional bearings).

Frictionless bearings

The frictionless bearings reduce the starting current to just 2A, removing the transient starting spikes frequently associated with screw compressors and the need for expensive soft start arrangements, as well as eliminating penalty charges for exceeding maximum power demands.