Magnetic field analysis of claw-pole type generator using equivalent magnetic circuit is presented in this paper. On the basis of 3D geometry, equivalent magnetic circuit, which consists of permeance and magneto motive-force (MMF) source, is designed and field analysis is performed by solving it. Non-linear characteristic of material is considered for precise analysis results. 3D FEA is performed to verify calculated results and flux densities in rotor and stator regions are compared. Comparing to 3D FEA, presented method gives precise results within instant calculation time. Calculated no-load back-EMF for field input voltage and speed of two models are verified by experiments.
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