Abstract: An apparatus (10) for supporting a winding (7) on a stator (1), in particular on a generator stator in a power station. The winding (7) has an end winding (9) which is supported axially on the core (2) of the stator (1) via winding supports (11) of the supporting apparatus (10). The winding supports (11) are supported on the end winding (9) via a stressing device (22), at right angles to an envelope surface (21). In order to improve the axial position between the winding support (11) and the end winding (9) during operation of the stator (1), a coupling device (23) is provided which allows relative movements between the end winding (9) and the winding support (11) in the circumferential direction and at right angles to the envelope surface (21), and prevents such relative movements in an envelope line direction (30).

Abstract: The invention relates to a device (12) for tensioning a winding (9) of a stator (1), in particular a generator stator (1) of a power plant. The winding (9) includes a winding head (10). Several winding supports (13) are arranged at the front side (4) of the core (2). Each winding support (13) abuts against the front side (4) of the core (2) and via a pressure spring element (19) against the funnel-shaped outer side (14) of the winding head (10). The winding supports (13) are fixed at the winding head (10) in the circumferential direction and in the surface line direction of the winding head (10). The winding supports (13) are movable perpendicularly with respect to the outer side (14).

Abstract: A horizontal-axis electrical machine has an built-in stator concentrically surrounded by a number of parallel retaining rings that spaced apart from one another in the axial direction and are connected on their outer circumference on opposing sides in each case by means of retaining structures to a base frame which extends in the axial direction. A horizontally acting spring, which has the form of a perpendicular, longitudinal plate, is fixed on the one hand with its ends to the associated retaining ring, and is firmly connected on the other hand with its freely flexible central part to the base frame by means of connecting elements, being provided within each of the retaining structures. Improved oscillation isolation between the built-in stator and the base frame is achieved in such an electrical machine by vertically acting spring elements disposed between the ends of the spring and the associated retaining ring.

Abstract: The invention relates to a device (12) for tensioning a winding (9) of a stator (1), in particular a generator stator (1) of a power plant. The winding (9) includes a winding head (10). Several winding supports (13) are arranged at the front side (4) of the core (2). Each winding support (13) abuts against the front side (4) of the core (2) and via a pressure spring element (19) against the funnel-shaped outer side (14) of the winding head (10). The winding supports (13) are fixed at the winding head (10) in the circumferential direction and in the surface line direction of the winding head (10). The winding supports (13) are movable perpendicularly with respect to the outer side (14).

Abstract: In a generator with an indirectly gas-cooled, in particular air-cooled, stator winding (21), the end regions of the stator bore (23) are to be designed in such a way that the conductor bars are shielded as effectively as possible by the laminated stator core (20) against magnetic fields inducing eddy currents, but, on the other hand, a specific radial dimension between the rotor retaining ring (12) and the laminated stator core (20) is ensured. According to the invention, for this purpose, the end region of the stator bore is designed with four axial zones having a different diameter profile. A first zone (I) is the interior of the stator with the constant nominal stator bore diameter (DI). Toward the end face of the stator is arranged a second zone (II) with a stator bore diameter (DII) widening toward the end face.

Abstract: In a generator with an indirectly gas-cooled, in particular air-cooled, stator winding (21), the end regions of the stator bore (23) are to be designed in such a way that the conductor bars are shielded as effectively as possible by the laminated stator core (20) against magnetic fields inducing eddy currents, but, on the other hand, a specific radial dimension between the rotor retaining ring (12) and the laminated stator core (20) is ensured. According to the invention, for this purpose, the end region of the stator bore is designed with four axial zones having a different diameter profile. A first zone (I) is the interior of the stator with the constant nominal stator bore diameter (DI). Toward the end face of the stator is arranged a second zone (II) with a stator bore diameter (DII) widening toward the end face.

Abstract: In a gas-cooled electrical machine, the conductor bars (3, 4) in the winding overhang are cooled directly by a flow element of the cooling gas flow which is passed through cooling channels (8) located within the eyes (5a, 5b) of the bar ends. To this end, the bar levels of the winding bars, which are designed as a two-level bar, are spaced apart from one another in the eye region, and thus form a radial cooling channel (8). These radial cooling channels (8) are coupled to the discharge eyes (5b) by pipe connections (10) which are connected electrically, and in terms of the flow, to round connections (20). The cooling channels (9) in the round connections (20) are connected by insulating tubes (31) or insulating hoses to an induction area (32) of the machine fan, which is separated from the winding overhang area (30) by a bulkhead wall (33).

Abstract: In a gas-cooled electrical machine, the conductor bars (3, 4) in the winding overhang are cooled directly by a flow element of the cooling gas flow which is passed through cooling channels (8) located within the eyes (5a, 5b) of the bar ends. To this end, the bar levels of the winding bars, which are designed as a two-level bar, are spaced apart from one another in the eye region, and thus form a radial cooling channel (8). These radial cooling channels (8) are coupled to the discharge eyes (5b) by pipe connections (10) which are connected electrically, and in terms of the flow, to round connections (20). The cooling channels (9) in the round connections (20) are connected by means of insulating tubes (31) or insulating hoses to an induction area (32) of the machine fan, which is separated from the winding overhang area (30) by a bulkhead wall (33). The invention allows the bar ends and the round connections (20) connected to them in the winding overhang to be cooled optimally, since the cooling is direct.