Abstract: A method for controlling a compressor that includes a compressor element, whereby during a transition from full load or partial load to zero load, a process A is followed that involves: (1) reducing the inlet pressure; and (2) reducing the speed and/or the drive torque. During a transition from zero load to part load or full load, a process B is followed that involves: (3) increasing of the speed or drive; and (4) increasing the inlet pressure.

Abstract: The core inside a combined radial-axial magnetic bearing is stacked with coated laminations each equipped with at least one radial cut. These cuts prevent the inducement of circulating currents caused by varying axial control fluxes through the central hole of the stack. Magnetic symmetry is preserved by pivoting every lamination with respect to the previous one over a particular angle. This arrangement not only reduces the losses in the bearing, but improves the performance of the axial channel as well.

Abstract: A turbocompressor system including a high speed motor (10) including a rotor (12) mounted in a rotative manner relative to the stator, wherein on the rotor (12) one or more impellers (11) are directly fixed, the stator including active motor structures and a shell (7), including a ferromagnetic stator core (6) and a winding being constructed as toroidally wound coils (5), the shell (7) is constructed in such a manner as to create additional open space between the stator core (6) and the shell (7), constituting a cooling channel (15) through which process gas is passed axially for directly cooling the active motor structures and the rotor (12), prior to compression by the one or more impellers (11).

Abstract: The core of a combined radial-axial magnetic bearing is stacked with coated laminations each equipped with at least one radial cut (9). These cuts (9) prevent the induction of circulating currents caused by varying axial control fluxes through the central hole of the lamination stack. Magnetic symmetry is preserved by rotating every lamination with respect to the previous one.

Abstract: The core inside a combined radial-axial magnetic bearing is stacked with coated laminations each equipped with at least one radial cut. These cuts prevent the inducement of circulating currents caused by varying axial control fluxes through the central hole of the stack. Magnetic symmetry is preserved by pivoting every lamination with respect to the previous one over a particular angle. This arrangement not only reduces the losses in the bearing, but improves the performance of the axial channel as well.

Abstract: Device for compressing and drying gas includes a multistage compressor with a low pressure stage, a high pressure stage, and a pressure pipe; and an adsorption dryer with a drying zone and a regeneration zone. An intercooler is located between the low pressure stage and high pressure stage, and the device includes a heat exchanger with a main compartment with an inlet part and an outlet part for a first primary fluid. The ends of the tubes of the heat exchanger are connected to a separate inlet compartment and outlet compartment for each series of tubes. A first series of tubes forms a cooling circuit of the intercooler in order to heat up gas from the high pressure stage for the regeneration of the adsorption dryer.

Abstract: Device for compressing and drying gas includes a multistage compressor with a low pressure stage, a high pressure stage, and a pressure pipe; and an adsorption dryer with a drying zone and a regeneration zone. An intercooler is located between the low pressure stage and high pressure stage, and the device includes a heat exchanger with a main compartment with an inlet part and an outlet part for a first primary fluid. The ends of the tubes of the heat exchanger are connected to a separate inlet compartment and outlet compartment for each series of tubes. A first series of tubes forms a cooling circuit of the intercooler in order to heat up gas from the high pressure stage for the regeneration of the adsorption dryer.

Abstract: A method for controlling a compressor that includes a compressor element, whereby during a transition from full load or partial load to zero load, a process A is followed that involves: (1) reducing the inlet pressure; and (2) reducing the speed and/or the drive torque. During a transition from zero load to part load or full load, a process B is followed that involves: (3) increasing of the speed or drive; and (4) increasing the inlet pressure.

Abstract: The core of a combined radial-axial magnetic bearing is stacked with coated laminations each equipped with at least one radial cut (9). These cuts (9) prevent the induction of circulating currents caused by varying axial control fluxes through the central hole of the lamination stack. Magnetic symmetry is preserved by rotating every lamination with respect to the previous one.

Abstract: A turbocompressor system including a high speed motor (10) including a rotor (12) mounted in a rotative manner relative to the stator, wherein on the rotor (12) one or more impellers (11) are directly fixed, the stator including active motor structures and a shell (7), including a ferromagnetic stator core (6) and a winding being constructed as toroidally wound coils (5), the shell (7) is constructed in such a manner as to create additional open space between the stator core (6) and the shell (7), constituting a cooling channel (15) through which process gas is passed axially for directly cooling the active motor structures and the rotor (12), prior to compression by the one or more impellers (11).