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This paper presents a novel axial doubly salient electro-magnetic machine with a new double sets of stator structure based on the traditional permanent magnet brushless DC motor and the switched reluctance motor. A new external control circuit is designed according to the special structure and working mechanism of the motor. And according to the electromagnetic characteristics in different conditions...
The transformer is subjected to the outlet and near area short circuit impact or the transportation in the collision, the winding may appear the distortion. After the winding deformation, the transformer winding may be local insulation failure, in the operation of the formation of partial discharge, under the action of lightning and other over-voltage, induced short circuit faults in the insulation...
In the preliminary design process of switched reluctance machine (SRM), adjusting the number of wingding turns or cross-sectional area of conductor to optimize windings design has dramatic effects on the performances like torque density, efficiency and thermal dissipation and so on. However, the difficulty exists on how to guarantee these performances while optimizing winding design. This paper proposes...
A parallel-serial dual active bridge (PSDAB) circuit is presented in the paper to improve the efficiency under the circumstances of high-voltage ratio transformation. The proposed PSDAB circuit is constructed by the paralleled low-voltage terminals of the two dual active bridges (DABs) and the serial high-voltage terminals of the DABs. Just like the DAB circuit, the zero voltage switching (ZVS) is...
In order to assess and improve the reliability of wind turbine generators (WTG), and to optimize the maintenance strategy, it is necessary to use online monitoring data acquired from supervisory control and data acquisition (SCADA) system to assess the real-time operational conditions of WTG. Because the determination of fuzzy membership function is subjective and fails to take randomness into account...
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