Abstract
In this paper, the electromagnetic field characteristics according to the rib thickness of each layer of IPMSM having a double V-type structure were analyzed. Using an 8-pole 72-slot 300kW class IPMSM as a standard model, the tendency of electromagnetic field characteristics according to rib thickness was confirmed through RSM, and two comparative models with different rib thicknesses were selected for comparison and analysis with the standard model. Finally, the optimization was carried out within the thickness range close to the standard model’s rib thickness by considering the minimum to maximum thickness of the rib and the stress of the rotor. As a result of the analysis, when the rib thickness of the 1 layer was thin and the rib thickness of the 2-layer was relatively thick, the electromagnetic field characteristics were improved in low-speed operation. In the case of high-speed, when the rib of the 2-layer was thinner than that of the 1-layer, the electromagnetic field characteristics were improved.
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