Siemens Aktiengesellschaft

Maria Bade

Axel Möhle

Joachim Mucha

Axel Moehle

The invention relates to a compressor system (), particularly for conveying gases or gas/oil mixtures in the offshore area, with a seawater-tight housing () with at least one access opening () for gases or gas/oil mixtures which are to be compressed, and with at least one outlet opening () for the compressed gases or gas/oil mixtures. In the housing (), a compressor () is disposed, which is connected at the inlet side to the access opening () and, at the outlet side, to the outlet opening (). An electric motor (), which has a stator assembly () and a rotor assembly () for driving the compressor (), is disposed in the housing (). According to the invention, the stator assembly () can be cooled over an inner side (GI) of the housing () of the compressor system ().

Compressor system for underwater use having a stator packet with an annular cooling chamber

The invention relates to a direct drive for large-scale drives, comprising a stator () which is configured, when seen from the peripheral direction, by a plurality of segments (), each having a self-contained winding arrangement, and a rotor which is configured from segments. The segments of the rotor are located on working elements that rotate with the rotor, and interact electromagnetically with a winding system of the stator (). The inventive drive is especially suitable for ring motors and tube mill drives.

Direct drive for large-scale drives

The electrical machine () has a stator () and a rotor (), wherein the stator () has stator slots (), in which a stator winding () with redundant and at least three-phase winding systems (U, V, W; U, V, W) is laid. According to the invention, the electrical machine () has a large number of poles with a pole number (PZ) of at least four, a number (NZ) of stator slots () which corresponds to the product of a phase number and the square of the pole number (PZ) of the electrical machine () or an integral multiple thereof, and a number of winding systems (U, V, W; . . . ; U, V, W) which corresponds to the pole number (PZ). In each case a number of in-phase winding sections (U-U, V-V, W-W) which corresponds to the pole number (PZ) are combined to form a group of phase winding sections (PU, PV, PW). The phase winding section groups (PU, PV, PW) are laid, phase-cyclically and pole-for-pole, in the stator slots () of the stator (). Depending on the pole and phase winding section group (PU, PV, PW), in each case are slot region (N-N) which corresponds to the pole number (PZ) is provided. The slot assignment takes place in such a way that the in-phase winding sections (U-U, V-V, W-W) are distributed, corresponding to their numbering, uniformly amongst the slot positions (N, . . . , N) of the associated slot regions (N-N).

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Berlin, Germany

Maria Bade