H - Electricity – 02 – H
Patent
H - Electricity
02
H
H02H 7/08 (2006.01) H02K 21/24 (2006.01) H02P 9/00 (2006.01) H02P 29/02 (2006.01)
Patent
CA 2644023
Disclosed is a transverse flux machine in which the rotor comprises several axially adjacent permanent magnet rings that are formed by individual magnets whose magnetic orientation alternates in a radial direction. The stator concentrically surrounds the rotor in at least some sections so as to form an air gap. The rotor further comprises several stator coils that are oriented coaxial relative to the permanent magnet rings. Each stator coil is provided with two terminals while magnetically soft poles that engage into one another and face the permanent magnet rings of the rotor protrude from the end of the stator coil which faces the air gap towards the rotor. The poles are respectively flush with single individual magnets. An active reactive-power source that is to be controlled is equipped with two terminals for each stator coil, the respective stator coil being connected to said two terminals. A monitoring arrangement supplies triggering signals to the active reactive-power source in case of a failure in one of the stator coils such that the two terminals of the respective stator coil are connected to each other at a low resistance. The inventive transverse flux machine is configured especially as a starter generator for a rotary engine and is coupled in a torsion-proof manner to a rotating shaft of the rotary engine.
L'invention concerne une machine à flux transversal dont le rotor comporte plusieurs anneaux à aimants permanents, voisins dans l'axe et composés d'aimants individuels à orientation magnétique alternant dans le sens radial. Le stator entoure le rotor en formant un entrefer au moins en partie concentrique. Le rotor a plusieurs bobines de rotor orientées de manière coaxiale par rapport aux anneaux à aimants permanents. Une bobine de stator possède deux raccords et sa face orientée vers l'entrefer vers le rotor est surplombée par des pôles magnétiques doux, en prise l'un dans l'autre et orientés vers les anneaux à aimants permanents du rotor. Les pôles sont chacun dans l'alignement d'aimants individuels. Une source active asservie de puissance réactive comprend deux raccords par bobine de stator, auxquels est reliée la bobine de stator correspondante. En cas de défaillance dans une des bobines de stator, un dispositif de surveillance émet des signaux de commande pour la source active de puissance réactive, de sorte que les deux raccords de la bobine de stator correspondante soient mutuellement reliés à basse impédance. Cette machine à flux transversal est conçue notamment comme génératrice de démarrage pour un turbogénérateur et elle est couplée solidaire en rotation à un arbre rotatif du turbogénérateur.
Gruendl Andreas
Herrmann Hubert
Hoffmann Bernhard
Marks & Clerk
Mtu Aero Engines Gmbh
LandOfFree
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