Patent ID: 8829755

Claim:
A permanent magnet synchronous machine module comprising: a rotor unit with a plurality of rotor magnets; and a stator unit with a plurality of slots surrounding the rotor unit, the stator includes 1 st to 36 th tooth parts, wherein the number of the rotor magnets for said rotor unit is P and the number of the slots for said stator unit is S; a tooth part is provided between every two adjacent slots and a coil is wound on the tooth part, wherein P and S are 38N and 36N, respectively, and N is a positive integer; or P and S are 34M and 36M, respectively, and M is a positive integer; a switching device connected with the coils wound on the tooth part for switching the permanent magnet synchronous machine module to a different phase by connecting the coils as one of three-phase connection, six-phase connection and nine-phase connection; when under a condition of N=1 and M=1, the nine-phase connection allows the permanent magnet synchronous machine module to form a first winding including an a-phase winding, a b-phase winding, and a c-phase winding, a second winding including a u-phase winding, a v-phase winding, and a w-phase winding, and a third winding including an x-phase winding, a y-phase winding, and a z-phase winding; wherein in the nine-phase connection, the a-phase winding is formed by connecting the coils wound on the 1 st tooth part, the 2 nd tooth part, the 19 th tooth part, and the 20 th tooth part of the stator unit; the b-phase winding is formed by connecting the coils wound on the 13 th tooth part, the 14 th tooth part, the 31 st tooth part, and the 32 nd tooth part of the stator unit; the c-phase winding is formed by connecting the coils wound on the 7 th tooth part, the 8 th tooth part, the 25 th tooth part, and the 26 th tooth part of the stator unit; the x-phase winding is formed by connecting the coils wound on the 5 th tooth part, the 6 th tooth part, the 23 rd tooth part, and the 24 th tooth part of the stator unit; the y-phase winding is formed by connecting the coils wound on the 17 th tooth part, the 18 th tooth part, the 35 th tooth part, and the 36 th tooth part of the stator unit; the z-phase winding is formed by connecting the coils wound on the 11 th tooth part, the 12 th tooth part, the 29 th tooth part, and the 30 th tooth part of the stator unit; the u-phase winding is formed by connecting the coils wound on the 3 rd tooth part, the 4 th tooth part, the 21 st tooth part, and the 22 nd tooth part of the stator unit; the v-phase winding is formed by connecting the coils wound on the 15 th tooth part, the 16 th tooth part, the 33 rd tooth part, and the 34 th tooth part of the stator unit; the w-phase winding is formed by connecting the coils wound on the 9 th tooth part, the 10 th tooth part, the 27 th tooth part, and the 28 th tooth part of the stator unit.