Electric rotary machine from the permanent magnet type

There is a rotary electric machine provided by the permanent magnet type, which can be driven with a negative d-axis current for which the electromagnetic exciting force is minimized and that at specific speeds at which the electromagnetic excitation force coincides with the resonant frequency of part of the rotary electric machine. The stator has teeth which protrude towards the side of the rotor, and a core back. The teeth each have a middle tooth portion around which a coil is wound, a front tooth portion, which faces the rotor and is wound around which no winding, and a flange formed between the central toothed portion and the front tooth portion and on both sides projecting in a circumferential direction. For a given first point of intersection on the surface of the rotor with a straight line connecting a center of a permanent magnet on the stator side with the front tooth area, which is the center point of the permanent magnet on the stator closest to the flange outside of an arc is formed, which as the radius of which, to the front tooth portion has a distance from a second intersection of the inner peripheral surface of the stator with a straight line connecting the rotational axis of the rotor to the first intersection.