Motor stator and motor

Abstract

The present invention relates to the field of motors, and discloses a motor stator and a motor. The motor stator comprises a stator core having a plurality of slots formed on a radially inner surfaceof the stator core and spaced apart by a predetermined slot pitch in a circumferential direction of the stator core; a stator winding including a plurality of phase windings mounted on the stator coreso as to be different from each other in electrical phase. The motor stator is characterized in that at least two branch windings in each phase winding are sequentially connected in parallel in the circumferential direction of the stator core; and a phase winding comprises a plurality of conductor groups. According to the invention, a completely symmetrical structure is adopted on a magnetic circuit through a winding structure, the problem of loop current generated by an asymmetric structure is eliminated, the torque ripple is reduced, the harmonic waves are few, the noise is reduced, the arrangement mode is simple, the use of busbars and bus bars is reduced, the branch and neutral point connection mode of each phase winding is simple, the manufacturing process is simplified, the production cost is reduced, and the machining efficiency is improved.

Description

technical field [0001] The invention relates to the field of motors, in particular to a motor stator and a motor. Background technique [0002] In the prior art, the stator winding includes various types of conductor coils, and the multiple types of conductor coils are inserted into the slots of the stator core according to a certain arrangement to form the required windings of single-phase motors or multi-phase motors. The hairpin coils used in the prior art have many types of irregular shapes and complicated arrangement methods. A large number of bus bars and bus bars are required to connect the branches and neutral points of each phase winding. The manufacturing process is complicated, the production cost is high, and the processing low efficiency. Contents of the invention [0003] The invention provides a motor stator and a motor, which adopts a completely symmetrical structure on the magnetic circuit through the winding structure, which eliminates the loop current p...

AI Technical Summary

Problems solved by technology

The hairpin coils used in the prior art have many types of irregular shapes and complicated arrangement methods. A large number of bus bars and bus bars are required to connect the branches and neutral points of each phase winding. The manufacturing process is complicated, the production cost is high, and the processing low efficiency

Images