摘要:
This fin is intended to be installed in a protruding manner inside a discharge pipe of a hydraulic machine. The fin includes a first face which has holes and a second face which is solid. The fin defines by itself, between the first face and the second face, a cavity connecting the outside of the discharge pipe to the holes in the first face.
摘要:
The invention relates to a curved conduit (2) pertaining to a hydraulic machine, for channeling a flow. Said curved conduit (2) is provided with fins (8) that are fixed to its inner wall (22) and comprise openings.
摘要:
L'invention concerne un système de fixation d'éléments magnétiques (12) dans une machine électrique à aimants permanents comportant au moins un stator et au moins un rotor (10) garni d'une pluralité d'éléments magnétiques (12), un élément magnétique (12) comportant au moins un aimant permanent (28). Le système de fixation comporte, pour la fixation d'un élément magnétique (12) au rotor (10), un dispositif de fixation (14) apte à être positionné en contact avec une portion de l'élément magnétique (12) et à être fixé au rotor au moyen d'au moins un élément mécanique de fixation (24), de manière à fixer ledit élément magnétique (12) au rotor (10) lorsque ledit élément mécanique de fixation (24) est en prise avec le rotor (10).
摘要:
A method for protecting a permanent magnet generator of a wind turbine with a multiphase generator, and n number of isolated converters, the multiphase generator including a rotor carrying permanent magnets and n number of independent multiphase sub-stators comprising a plurality of windings, each converter being connected to an independent multiphase sub-stator and configured to control the plurality of windings of the multiphase sub-stator comprises determining an asymmetrical short circuit current in one of the sub-stators, which generates a first oscillating torque, disconnecting the converter linked to the sub-stator with an asymmetrically short circuited group of windings, and injecting an asymmetrical current with the remaining connected converters, wherein said injected asymmetrical current generates a second oscillating torque that is substantially opposed in phase to the first oscillating torque so that the first oscillating torque is at least partly compensated is disclosed. Permanent magnet generators are also disclosed.
摘要:
Die Erfindung betrifft eine rotierende elektrische Maschine, insbesondere Hydro-Generator, mit einem Rotor, welcher ein sich in Richtung einer Maschinenachse erstreckendes Rotorblechpaket mit einer Rotorwicklung (15a,b) umfasst, wobei die Rotorwicklung (15a,b) an den Enden des Rotorblechpakets jeweils einen Wickelkopf (15) ausbildet, der zum Abfangen von Zentrifugalkräften mittels radial durch den Wickelkopf (15) hindurchgehender Bolzen (18) an einem sich in axialer Richtung an das Rotorblechpaket anschliessenden, konzentrisch innerhalb des Wickelkopfes (15) angeordneten Wickelkopf-Rim befestigt ist, und wobei die Befestigung (17, 18, 24) zur sicheren Aufnahme von axialen Dehnungen des Wickelkopfes (15) ausgebildet ist. Bei einer solchen Maschine wird eine einfache und sichere Befestigung dadurch erreicht, dass die Bolzen (18) am Wickelkopf-Rim jeweils an einem sich in axialer Richtung ersteckenden T-Hammerprofil (17) befestigt sind, welches axial verschieblich in einer zugehörigen axialen T-Nut im Wickelkopf-Rim gelagert ist, wobei zusätzliche Kopplungsmittel (22, 23) zur Übertragung der axialen Dehnungen des Wickelkopfes (15) auf das T-Hammerprofil (17) vorgesehen sind.
摘要:
The present invention generally relates to a runner unit (2) of a tidal power plant, and more particular to a blade (1) of the runner unit. The blade (1) according to the invention provides a maximised efficiency of energy production of the tidal power plant during functioning of both direct and reverse modes.
摘要:
The present disclosure relates to a method for fabrication of a conductor bar and to a use of a conductor tape with applied putty for the fabrication of a conductor bar. Described is a method for fabrication of a conductor bar with the following steps, applying a putty at one side of a conductor tape, applying a release foil at the other side of the putty opposed to the conductor tape, removing the release foil before applying the conductor tape to the narrow side of the conductor bar, providing a pressing mould with rounded edges at the inner side of the pressing mould, surrounding the conductor bar with putty and conductor tape with the pressing mould, and hot pressing the conductor bar with the pressing mould.