In a previous paper, we proposed a reluctance network analysis (RNA) model of a permanent magnet (PM) generator with a distributed winding and an overhang structure in which the permanent magnet is longer than the stator's stack in the axial direction. Using the RNA model, the basic characteristics of the PM generator were calculated accurately. A method for calculating the iron loss of the generator, however, was not discussed. In this paper, we estimate the iron loss on the basis of flux

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... ty waveforms calculated by using the RNA model. To verify the validity of the proposed method, the estimated values are compared with those given by a finite element method (FEM). In addition, we examine the accuracy of the flux and iron loss distribution obtained from the RNA model. Key words: permanent magnet (PM) generator, reluctance network analysis (RNA), finite element method (FEM), flux density waveforms, iron loss 永久磁石発電機の RNA モデルを用いた鉄損算定について 中村健二・石原正浩・一ノ倉理 東北大学 大学院工学研究科,仙台市青葉区荒巻字青葉 6-6-05(〒980-8579) Number of turns/phase: 480 turns Winding resistance/phase: 8.46 Ω Stator and rotor stacks: 35.0 mm Axial length of the magnet: 52.8 mm Permanent magnet (ferrite) Coercive force: 294 kA/m Residual magnetic flux density: 0.38 T 104 mm