Synchronisation system

Details Synchronisation system Synchronisation system

H - Electricity

02

K

H02K 3/28 (2006.01) F03D 9/00 (2006.01) H02K 1/18 (2006.01) H02K 1/24 (2006.01) H02K 7/12 (2006.01) H02K 7/18 (2006.01)

Patent

CA 2356315

Synchronous machines have long been known in many different forms. In operation as a generator and also in operation as a motor, in the situation of a short-circuit, for example a short-circuit at connecting terminals or also within the stator winding, such synchronous machines produce very high short-circuit torques. In that respect, those very high short-circuit torque peaks can reach values of up to six to eight times the rated torque of the synchronous machine. Therefore, consideration must also be given to the very rare short-circuit situation and the concomitant occurrence of a very high short-circuit torque, in regard to the mechanical construction of the synchronous machine. The object of the invention is to simplify the synchronous machine in regard to its structure and to avoid the above-mentioned disadvantages. A synchronous machine having a rotor and a stator, wherein the stator has at least two independent alternating (three-phase) current windings which are electrically and/or spatially isolated from each other.

Les machines synchrones sont connues depuis longtemps sous diverses formes. De telles machines produisent, en mode générateur ou en mode moteur, en cas de court-circuit, par exemple un court-circuit aux bornes d'alimentation ou à l'intérieur de la bobine du stator, des couples de court-circuit très importants. Ces pics de couples de court-circuit peuvent alors atteindre des valeurs allant jusqu'à six à huit fois le couple nominal de la machine synchrone. Lors de la construction mécanique de la machine synchrone, un calcul concernant le cas très rare de court-circuit et l'apparition d'un couple de court-circuit très important qui en résulte doit également être réalisé. L'objectif de la présente invention est de simplifier la construction d'une telle machine synchrone et d'éviter les inconvénients mentionnés précédemment. La présente invention concerne une machine synchrone pourvue d'un rotor et d'un stator, ledit stator présentant au moins deux bobines à courant alternatif (triphasé) indépendantes, isolées électriquement et/ou spatialement l'une de l'autre.

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