Rotor Core, Rotor, Rotary Electric Machine, And Design Method For Rotor Core

Abstract: A rotor core (31) has: a front bridge (37f) provided between the outer peripheral surface (31a) of the rotor core (31) and a front flux barrier (35f); and a rear bridge (37r) provided between the outer peripheral surface (31a) of the rotor core (31) and a rear flux barrier (35r). The relative position of the center position ?r of the rear bridge (37r) with respect to a rear reference position ?sr of the rear flux barrier (35r) is positioned rotationally backward than the relative position of the center position ?f of the front bridge (37f) with respect to the front reference position ?sf of the front flux barrier (35f). The width Wf of the front bridge (37f) and the width Wr of the rear bridge (37r) are different from each other.

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