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The performance of a variable speed, direct-drive synchronous generator wind turbine concept is compared for two grades of electric steel applied for the generator stator core lamination. A ring type, radial flux permanent magnet synchronous generator (PMSG) is modelled. For a fixed mechanical power input, the geometry of the PMSG is optimized for each material to maximize the annual energy yield...
The proposed method pertains to diagnostics of linear parts of gas distribution and trunk lines. It is based on nanolevel effects on the work surface of pipes. The proposed pipe wall diagnostics technique allows taking consequent analyses reasonably by piecemeal removing and cutting specimen during 20-30 years of pipeline operating time. It ensures the accurate predictive analysis of the pipeline...
The publication of RTCA DO 1601 and EN 61000-4-212 modifies the status of the mode stirred reverberation chamber. Once experimental, today they are industrial and recognized. To design a mode stirred chamber, it should take into account several criteria which influence the performances. The dimensions of the reverberation chamber and the size of the mode stirred influence the statistic uniformity...
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