Patent ID: 9425675
Filing Date: 2016-08-23
CPC Classification: H02K

Claim Text:
1. A permanent magnet synchronous planar motor with a structure of concentric winding, comprising: a primary structure, a secondary structure, and an air gap, wherein said primary structure comprises: a primary base plate ( 2 ) and armature windings, said secondary structure comprises a secondary yoke plate ( 4 ) and a permanent magnet, said air gap is provided between said primary structure and said secondary structure, a mover of said permanent magnet synchronous planar motor with said structure of concentric winding realizes planar motion in plane XOY, said armature windings are fixed on an air gap side of said primary base plate ( 2 ) in a shape of board, wherein said air gap side is defined as a side adjacent to said air gap, said armature winding of each phase comprises a plurality of concentric rectangular coils ( 1 ), a distance L l between center lines of two adjacent sides of said two adjacent rectangular coils ( 1 ) is equal to a polar distance τ m of said permanent magnet in said secondary structure, τ m is a shortest distance from one end of said permanent magnet to another end of said permanent magnet when moving in a particular direction, said rectangular coils ( 1 ) are connected in series in turn from inside to outside, winding directions of said two adjacent rectangular coils ( 1 ) are opposite, a distance L c between center lines of two opposite sides of each of said rectangular coils ( 1 ) and said polar distance τ m of said permanent magnet in said secondary structure have a relationship as follows, and L c =(2k+1) τ m , wherein k is a natural number; wherein said primary structure further comprises a deflection controlling winding, said deflection controlling winding is fixed on said air gap side of said primary base plate (