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A saturation map for the non-uniform magnetic saturation of a V-shaped interior permanent magnet rotor is formulated in this paper. This saturation map is used in conjunction with the magnetic equivalent circuit theory to propose an analytical method for accurate computation of the airgap permanent magnet flux density for interior permanent magnet rotors. Unlike the conventional methods, the proposed...
The flux of the embedded magnets in the rotor of an interior permanent magnet (IPM) synchronous machine causes a non-homogeneously saturated rotor iron. This alters the reluctance of the stator flux path due to the nonlinear $B$ –$H$ curve of the rotor iron and should be considered in the analytical field calculations; however, it is often neglected in the prior-art methods leading to inaccurate...
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