Abstract:
Die Erfindung betrifft eine dynamoelektrische Maschine (1) mit einem Stator (2) mit einem flussleitenden Element, insbesondere einem Blechpaket, wobei das flussleitende Element Nuten aufweist, in denen ein Wicklungssystem angeordnet ist, das an den Stirnseiten des magnetflussleitenden Elements Wickelköpfe (6) aufweist, - mit einem Rotor (3), der durch einen Luftspalt (4) vom Stator (2) beabstandet ist, und durch in Lagerschilden (5) positionierten Lagern (10) um eine Achse (14) drehbar gelagert ist, - mit einem dehnbaren Kühlelement (7), das zumindest abschnittsweise den Wickelkopf (6) umschmiegt und durch ein Kühlmedium durchströmbar ist.
Abstract:
Disclosed is a method of operating a large electric generator, the generator having a rotor arranged along a centerline of the generator, a core arranged coaxially and surrounding the rotor; a plurality of stator windings arranged within the core; a stator frame arranged to fixedly support the core and rotationally support the rotor; a gas cooling system that circulates a cooling gas within the generator, the method steps including circulating a cooling liquid that cool the stator windings; sensing an output parameter of the generator; comparing via a control system the sensed output parameter of the generator to a predetermined scheme; and sending a control signal to an adjusting device in accordance with the control system comparison.
Abstract:
A gas dryer (100) of the invention, being a heaterless type of gas dryer (100) that carries out dehumidifying of hydrogen gas circulating in an interior of a rotating electrical machine (6), includes a drying tower (1) that causes moisture in the hydrogen gas to adsorb to a desiccant (2), and a funnel-form desiccant holding portion (13) disposed in an interior of the drying tower (1) and holding the desiccant (2), wherein the desiccant (2) is introduced into the desiccant holding portion (13) from an input valve (25) of an upper portion of the drying tower (1), and moist desiccant (2) is discharged from a discharge valve (26) of a lower portion of the drying tower (1). The desiccant holding portion (13) is configured of perforated metal, or the like, having ventilation, and is used as a partitioning plate that partitions the interior of the drying tower (1).
Abstract:
Object Not only inside air but also coil end part of a stator 2 are prevented from becoming high in temperature, and cooling performance is improved. Solution to Problem In order to achieve the object described above, a rotating electric machine 1 of the present invention is made up of a stator 2 and a rotor 3 oppositely arranged through the intervention of predetermined air gap at the inner diameter side of the stator 2; the stator 2 has a stator iron core 4, a plurality of stator slots 12 that extend in the axial direction and are formed in the circumferential direction at predetermined intervals at the inner diameter side of the stator iron core 4, and stator coils attached in the plurality of stator slots 12; the rotor 3 has a rotor iron core 7, a plurality of rotor slots 6 that extend in the axial direction and are formed in the circumferential direction at predetermined intervals at the outer circumference side of the rotor iron core 7, and magnetic field members inserted in the rotor slots 6; and the rotor iron core 7 has an outside air ventilation hole 17a for ventilating air outside the machine and an inside air ventilation hole 16 for ventilating air inside the machine.
Abstract:
Disclosed is a method of operating a large electric generator, the generator having a rotor arranged along a centerline of the generator, a core arranged coaxially and surrounding the rotor; a plurality of stator windings arranged within the core; a stator frame arranged to fixedly support the core and rotationally support the rotor; a gas cooling system that circulates a cooling gas within the generator, the method steps including circulating a cooling liquid that cool the stator windings; sensing an output parameter of the generator; comparing via a control system the sensed output parameter of the generator to a predetermined scheme; and sending a control signal to an adjusting device in accordance with the control system comparison.
Abstract:
Disclosed is a method of operating a large electric generator, the generator having a rotor arranged along a centerline of the generator, a core arranged coaxially and surrounding the rotor; a plurality of stator windings arranged within the core; a stator frame arranged to fixedly support the core and rotationally support the rotor; a gas cooling system that circulates a cooling gas within the generator, the method steps including circulating a cooling liquid that cool the stator windings; sensing an output parameter of the generator; comparing via a control system the sensed output parameter of the generator to a predetermined scheme; and sending a control signal to an adjusting device in accordance with the control system comparison.
Abstract:
The invention relates to an electrical rotating machine, comprising a stator (1), a rotor (8) and a turbomachine (7), which is provided to cool the electrical rotating machine on the one side, wherein the stator (1) comprises a laminated stator core (2), a front stator winding head (5a) and a rear stator winding head (5b), wherein the rotor (8) comprises a rear rotor winding head (6b). In order to improve cooling during the one-sided ventilation, in particular with respect to the prior art, with regard to a uniform temperature distribution, it is suggested that the laminated stator core (2) comprise channels (9a, 9b) extending in the axial direction, which are provided to cool the rear stator winding head (5b) with a second cooling air flow (14) generated by the turbomachine (7), wherein at least one first channel (9a) is provided to guide a second cooling air flow (14) generated by the turbomachine (7) through the laminated stator core (2) to the rear stator winding head (5b), wherein an air guide (4), which is fastened to the laminated stator core (2) on the side of the rear stator winding head (5b), is provided to bypass the second cooling air flow (14) via the rear stator winding head (5b), wherein at least one second channel (9b) is provided to guide the second cooling air flow (14) back from the rear stator winding head (5b) through the laminated stator core (2), wherein at least two radial slits (11) arranged in the axial direction, which are arranged radially between the channels (9a, 9b) running in the axial direction and an air gap (3) between the laminated stator core (2) and the rotor (8) and are connected to each other, are provided to cool the laminated stator core (2), in particular the stator windings, and/or the rear rotor winding head (6b), wherein the axial distance between the radial slits (11) to the side of laminated stator core (2) which faces away from the turbomachine (7) is reduced and is provided to compensate for a temperature gradient caused by one-sided cooling.
Abstract:
Bogie (10) comportant : - un châssis (15) comportant au moins une traverse (37), - un premier essieu (20A) et un deuxième essieu (20B), - au moins un premier moteur (30A) d'entraînement du premier essieu, le premier moteur comportant une carcasse (51 A), un rotor (55A), un stator (53A), un arbre (57A) entraîné par le rotor, et au moins un ventilateur interne (59A) entraîné par l'arbre, et - un échangeur de chaleur (35) formant une pièce rapportée fixée à la traverse, ou un échangeur (135) formé par des structures internes (182) de la traverse, l'échangeur de chaleur comportant au moins une première entrée d'air (75A) connectée à une sortie d'air (67A) de la carcasse, et au moins une première sortie d'air (77A) connectée à une entrée d'air (65A) de la carcasse, l'échangeur de chaleur et la carcasse définissant un circuit d'air (79) de refroidissement du premier moteur, l'échangeur de chaleur étant destiné à recevoir de la chaleur véhiculée par de l'air en provenance du premier moteur et à dissiper cette chaleur dans l'atmosphère, et le circuit d'air comportant un premier passage (F2A) entre le rotor et le stator, et un deuxième passage (F3A) entre le stator et la carcasse.
Abstract:
A linear motor (30), including a mover and a stator, the mover having a cylindrical body (33) that forms an elongate circular bore (31) and the stator being an elongate shaft disposed within the bore. The cylindrical body (33) includes a plurality of electrical windings (32) and the shaft includes a synchronous or variable reluctance topology, or a plurality of magnets. Electrical energising of the windings (32) results in relative movement and/or force generation between the cylindrical body (33) and the shaft. The cylindrical body (33) being disposed within a housing (37) with a coolant space (35) being formed between the cylindrical body (33) and an internally facing cylindrical surface (38) of the housing (37). The coolant space (35) being formed along at least a major portion of the length of the cylindrical body (33) and the coolant space (3) being substantially cylindrical and of substantially constant cross-section.