Design and optimization of a synchronous reluctance machine with salient poles and flux barriers

The electromagnetic torque of a synchronous reluctance machine with massive iron poles strongly depends on the ratio X_d/X_q. Generally, a high ratio of X_d/X_q can be achieved by a diminution of magnetic circuits saturation facing the transverse axis. For this purpose, the principle of flux barrier is carried out by introducing a slight modification on the usual massive pole. These modifications consist in digging one slot along the axis of the rotor poles: this manufacture must be simple in order to preserve their sturdiness and their rigidity. The developed method is applied to a motor particularly designed for special features (vehicle rim, winch) and special conditions (hostile environment), with an exterior rotor (rim motor).