Patent ID: 8829755
Filing Date: 2014-09-09
Classification: H02K

Abstract:
1. 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 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