Abstract:
Die Erfindung betrifft eine Schenkelpolrotor (1) für eine elektrische Maschine aufweisend: - einen Rotorkern (2), welcher ein Rotorjoch und in Umfangsrichtung an dem Rotorjoch verteilt angeordnete Schenkelpole (5) aufweist, wobei jeweils zwei radial gegenüberliegende Schenkelpole (5) ein Schenkelpolpaar ausbilden und wobei die Schenkelpole (5) jeweils einen Rotorzahn (15) und einen Polschuh (14) aufweisen, - magnetfelderzeugende Wicklungen (4), welche um die Rotorzähne (15) der Schenkelpole (5) gewickelt sind und an gegenüberliegenden Stirnseiten (2a) des Rotorkerns (2) Wickelköpfe (7) ausbilden, und - eine Stützvorrichtung (8) zum Abstützen der Wickelköpfe (7), welche eine Spann- und Umlenkeinrichtung (9) und eine Rovingwicklung (10) mit einem Roving (11) aufweist, durch welchen mehrere, in Umfangsrichtung versetzte, die Wicklungen (4) jeweils eines Schenkelpolpaars umspannende Windungen gebildet sind und welche dazu axiale erste Rovingabschnitte (11a) und stirnseitige zweite Rovingabschnitte (11b) aufweist, wobei die zweiten Rovingabschnitte (11b) mittels der Spann- und Umlenkeinrichtung (9) zum Ausbilden einer Windung zwischen radial gegenüberliegenden Schenkelpolen (5) über die Wickelköpfe (7) geführt sind und zum Ausbilden eines Windungsübergangs zwischen zwei Windungen beim Führen über die Wickelköpfe (7) entlang der Umfangsrichtung umgelenkt sind.
Abstract:
Rotor (1) compreendendo um pacote de chapas (3) montado em um eixo (2), em que o dito pacote de chapas (3) é composto por pelo menos duas regiões, sendo uma primeira região (31) dotada de ranhuras (5) em cujas ranhuras (5) são alojadas bobinas (4) que formam caídas (6) adjacentes entre si; e uma segunda região de cabeça de bobina (32), em que estão as extremidades das ditas bobinas (4). Um calço distanciador (8) é disposto entre as ditas caídas (6) em uma região reta longitudinal (61) das bobinas (4). O calço distanciador (8, 80) compreende uma parte de base (81, 801) configurada para se estender longitudinalmente a partir da face de extremidade do pacote de chapas (3), na região reta longitudinal (61) das ditas bobinas (4), e pelo menos uma parte de cunha (82, 802) que se estende substancialmente perpendicularmente a partir da parte de base (81, 801).
Abstract:
The invention relates to a method for repairing an electric generator, preferably in a wind turbine generator (WTG), the electric generator (10) having a stator and a rotor (30) rotatably mounted relative to the stator. The method of repairing the electric generator provides a rotor connecting ring (40) with a first conductor assembly and a second conductor assembly in two different planes, each assembly with a plurality of conductive arc segments. Each of the first and the second plurality of conductive arc segments form a ring-like shape in their respective plane, both ring-like shapes being concentrical to the central shaft (132) when the rotor connecting ring is mounted. First electrical connections (50) from the central shaft connect to the rotor connecting ring for the multiple phases (K,L,M). Second electrical connections (60) further connect from the rotor connecting ring to the respective windings of the multiple phases (K,L,M) on the exterior part of the rotor facing the stator. The rotor connecting ring enhances rotational and thermal stability of the electric generator.
Abstract:
The invention relates to a supporting ring for the coil head of an electrodynamical machine, which can be arranged radially within the coil head and coaxially to a rotational axis of a rotation body of the machine, and is dimensioned and designed such that it can be fastened in a rotationally fixed and displaceable manner in the direction of the rotational axis at least indirectly on the rotor body or on a component co-rotating with the same. The supporting ring is characterized by recesses, in particular indentations and/or through-holes, which are arranged essentially laterally of main force flow paths in the supporting ring, which occur during operation in the electrodynamical machine. The invention also relates to an electrodynamical machine which is equipped with the supporting ring according to the invention.
Abstract:
The aim of the invention is to achieve improved cooling of the winding head in electrical machines of which the rotor is operated at high rotation speeds. Therefore, a rotor (1) is provided with a winding head cap (4) which has a cylindrical casing. The casing is at least partially formed from a composite fibre material or from a light metal or from a light metal alloy and has a channel (10) running through it. This can produce a coolant stream in the radial direction from the winding head cap (4), so that the cooling of the winding head is optimized.
Abstract:
Die Erfindung betrifft eine elektrische Maschine (10) im Leistungsbereich von mehreren MVA, insbesondere Asynchronmaschine, welche elektrische Maschine (10) einen um eine Achse drehenden Rotor mit einer Rotorwicklung umfasst, die in einem Rotorblechkörper angeordnet ist und ausserhalb des Rotorblechkörpers jeweils einen frei liegenden Wickelkopf (16) aufweist, der zum Auffangen der während des Betriebs auftretenden Zentrifugalkräfte mit einem Wickelkopfrückhaltesystem (29) ausgestattet ist, welches eine Mehrzahl von radial wirkenden Rückhalteelementen (20, 21) umfasst. Die Sicherheit der Maschine wird dadurch erhöht, dass die Rückhalteelemente (20, 21) mit Sicherungsmitteln (22, 23) versehen sind, welche die Rückhalteelemente (20, 21) gegen ein unbeabsichtigtes Lösen und/oder Wegfliegen im Falle eines Bruches sichern.
Abstract:
An electric machine includes a shaft and a rotor carried by the shaft and having a rotor body, a plurality of rotor windings carried by the rotor body, and a retaining ring surrounding the rotor windings adjacent an end of the rotor body. An electrically conductive stud extends radially outwardly from the shaft adjacent the end of the rotor body. An electrically conductive member includes a first end section coupled to the electrically conductive stud and having a loop shape, a second end section coupled to a corresponding one of the rotor windings, and an intermediate section between the first and second end sections. An insulation assembly is between the shaft and the retaining ring and surrounding the intermediate section to define at least one gap with adjacent portions thereof
Abstract:
A rotor pole crossover connection joint for use in a rotating electrical machine is disclosed. The connection joint integrally couples a bottom rotor coil strap to a rotor pole crossover connector with a single piece connector that reduces, distributes or otherwise tolerates stress concentrations in the connector. A corresponding method of forming a rotor pole crossover connection and a rotor assembly including a rotor pole crossover connection joint are also disclosed.