30-slot 14-pole fractional-slot double-layer short-distance distribution winding 15-phase permanent magnet synchronous motor

The invention discloses a 30-slot 14-pole fractional-slot double-layer short-distance distribution winding 15-phase permanent magnet synchronous motor. Fifteen phase windings are divided into three groups. The axes of five phase windings in one group are separated from one another for 72 DEG, and the five phase windings are connected for forming a five-phase star-connected symmetrical winding. The axes of the five-phase star-connected symmetrical windings which correspond with one another in the three groups are successively shifted by 12 DEG. Three natural points in the three groups of five-phase star-connected symmetrical windings are not connected with one other. The number of slots on each phase of each pole is a fractional number. The span of each coil is 2 slots. The end of the coil is relatively short, thereby saving copper and realizing small copper consumption amount. When a fundamental wave current is input into each star-connected symmetrical winding, a third harmonic current of which the amplitude