To optimally select multi-pulse rectifiers (MPRs) used in industrial applications, the electrical and magnetic analysis must be performed simultaneously. Most previous studies have focused mainly on electrical analysis, with this approach in this paper, two 20-pulse rectifiers (20PRs) based on two 10-phase polygon and T-connected autotransformers are introduced, discussed, simulated, and implemented. The comparison of 10-phase polygon autotransformer (PA) and T autotransformer (TA), based on electric and magnetic field analyses has been explained. The electric and magnetic analyses are based on Matlab/Simulink programming environment and COMSOL Multiphysics software. Based on the results of magnetic analysis, it is observed that the maximum flux density of 10-phase PA is slightly less than TA, but the density distribution in PA is more asymmetric than TA. Also, considering the results of electrical analysis, the kilovolt-ampere (kVA) rating and current total harmonic distortion (THD) of the 20PR based on TA are 7.96% and 2.43% less than the 20PR based on PA, respectively. Finally, based on the analysis of the electric and magnetic fields, it can be concluded that the 20PRs based on TA are the optimal selection for use in industrial applications.
کلید واژگان :10-Phase autotransformer Polygon autotransformer (PA) T autotransformer (TA) Electric and magnetic analyses kVA rating Cost comparison
ارزش ریالی : 600000 ریال
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