Patent ID: 9362786
Filing Date: 2016-06-07
CPC Classification: H02K

Claim Text:
1. A multi-phase reluctance electric motor with transverse magnetic flux, characterized in that: said electric motor comprises a stator ( 10 ) and a rotor ( 20 ); wherein a gas partition channel ( 30 ) is defined between said stator ( 10 ) and said rotor ( 20 ); wherein said rotor ( 20 ) comprises a rotor frame unit ( 4 ) and a plurality of rotor teeth ( 5 ); wherein said plurality of rotor teeth ( 5 ) are uniformly distributed along said outer circumferential portion of said rotor frame unit ( 4 ); wherein said rotor frame unit ( 4 ) and said rotor teeth ( 5 ) have an integrated structure; wherein said stator ( 10 ) comprises a housing ( 1 ) and an armature unit with m number of phases defining m number of single-phase armature members, where m is said number of phases of said electric motor and m is equal to or greater than 3; wherein said housing ( 1 ) has a cylindrical structure; wherein said m number of armature members of said armature unit are sequentially arranged along an axial direction inside said housing, and said single-phase armature members are sequentially staggered along an circumferential direction at an electrical angle of 360°/m; wherein each of said single-phase armature member comprises an armature iron core, an armature coil ( 2 ) and 2n number of permanent magnets ( 3 ); wherein n is a positive integer; wherein said armature iron core comprises a first iron core segment ( 6 ), a second iron core segment ( 7 ) and a third iron core segment ( 8 ) in which all of said first, second and third iron core segments have a ring-shaped structure defining an axial direction, a central axis along said axial direction, an outer diameter and an inner diameter respectively, wherein said outer diameter of each of said first, said second and said third iron core segments is the same; wherein said first, said second and said third iron core segments are sequentially and tightly arranged along said axial direction inside said housing ( 1 ), and said central axis of said first, said second and said third iron core segments is the same; wherein said second iron core segment ( 7 ) is positioned between said first iron core segment ( 6 ) and said third iron core segment ( 8 ) and said inner diameter of said second iron core segment ( 7 ) is greater than that of said first iron core segment ( 6 ) and said inner diameter of said third iron core segment ( 8 ); wherein said inner diameter of said first iron core segment ( 6 ) and said inner diameter of said third iron core segment ( 8 ) are the same; wherein said armature coil ( 2 ) has an annular coil structure and said armature coil ( 2 ) is embedded within an annular space formed between said first iron core segment, said second iron core segment and said third iron core segments; wherein said 2n number of permanent magnets ( 3 ) utilizes permanent magnets having a tile-shaped structure which is radially magnetized or magnetized in parallel; wherein said 2n number of permanent magnets ( 3 ) are divided equally into 2 groups to define a first permanent magnet group and a second permanent magnet group; wherein said permanent magnets of said first permanent magnet group are sequentially and alternately aligned according to a N-pole and a S-pole of each of said permanent magnets along a circumferential direction at an inner surface of said first segment ( 6 ); wherein said permanent magnets ( 3 ) of said second permanent magnet group are sequentially and alternately aligned according to a S-pole and a N-pole of each of said permanent magnet ( 3 ) along a circumferential direction at an inner surface of said third segment ( 8 ); wherein said permanent magnets ( 3 ) in said first segment ( 6 ) and said permanent magnets in said third segment ( 8 ) are arranged in opposite polarities and symmetrically along said axis of symmetry of said cross-section of said second segment ( 7 ); wherein a polar distance τ m is defined as a distance between each two adjacently positioned permanent magnets in said same iron core segment in which said permanent magnets are aligned along said circumferential direction of said corresponding iron core segment, where a pitch τ p of said rotor teeth ( 5 ) is defined as a distance between two tooth which are aligned along said circumferential direction, and a relation between said polar distance and said pitch fulfills the equation 2 τ m =τ p .