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MANAGE THE EXCITATION CONTOUR OF AN AUTONOMOUS SYNCHRONOUS GENERATOR WITH SHORT CIRCUITS IN THE STATOR

The actual scientific problem is solved in the work, which consists in development, theoretical and experimental researches of devices which provide reduction of negative consequences at short circuits in a stator of synchronous machines.The most difficult mode of operation of synchronous machines is internal short circuits in the stator, which leads to the destruction of the windings, and in some cases — the burning of steel. Moreover the current of the excitation winding induces emf, which feeds the point k.z. To reduce the effects of k.z. it is necessary to reduce the excitation current that determines the magnetic field.Despite the relative short-livedness, k.z. lead to power failure, but also adversely affects the operation of adjacent, especially loaded electrical receivers and, in addition, can cause failure of the excitation system SG.Therefore, the urgent technical task is to develop devices that ensure the reliability of the elimination of short-circuits in the stator of the synchronous generator.Comparative analysis of the obtained expressions shows that the inclusion of electrical capacity contributes to a more intense change in the current of the OZ.It is proved that a significant amount of time and the presence of soothing circuits SG do not allow to intensively dampen the magnetic field.The experiments confirmed the feasibility of using the developed device in the modes of damping the magnetic field of the synchronous generator and identified the advantages over existing devices.