Distributed Winding Motor Stator Layout for Interference-Free Coil Winding
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Solution Overview
Problem
Existing distributed winding motors face challenges in forming coils when the number of magnetic pole units increases, leading to interference during winding and placement, particularly when a coil is not wound around certain magnetic pole units.
Innovation Solution
A motor design featuring a first stator with coupled yoke parts and gaps between magnetic pole units, allowing for easy placement of coils, and a second stator disposed at these gaps to prevent interference, facilitating the formation of distributed winding coils.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the number of magnetic pole units is increased to receive magnetic flux from a magnet, then the magnetic flux reception is improved, but the coil winding process becomes difficult due to interference between the nozzle and magnetic pole units
Solution Approach 1:
The stator is divided into multiple independent magnetic pole units that are arranged circumferentially. Each magnetic pole unit can be independently positioned, allowing the coil winding nozzle to access and wind coils on specific pole units without interference from adjacent poles. This segmentation enables increased number of magnetic pole units while maintaining ease of coil winding.
Solution Approach 2:
The magnetic pole units are arranged in a circumferential direction around the rotor, utilizing the radial-circumferential-axial three-dimensional space. This spatial arrangement allows the coil winding nozzle to approach from the axial direction and wind coils on pole units distributed around the circumference, avoiding interference that would occur with a linear arrangement.
2Power
If distributed winding is implemented to improve motor performance, then the motor efficiency is improved, but the complexity of coil placement increases due to interference with magnetic pole units
Solution Approach 1:
By segmenting the stator into discrete magnetic pole units with gaps between them, the patent enables independent access to each pole unit during coil winding. This segmentation simplifies the distributed winding process by allowing the coil winding nozzle to systematically wind coils on each pole unit without navigating around interfering structures, thereby reducing placement complexity while maintaining the performance benefits of distributed winding.
3Use of energy by moving object
If more magnetic pole units are added to the stator, then the magnetic flux utilization is improved, but the space available for coil placement is reduced
Solution Approach 1:
The patent utilizes the axial dimension and circumferential distribution to provide coil placement space. Coils are wound around magnetic pole units extending in the axial direction, and multiple pole units are distributed circumferentially. This three-dimensional utilization of space allows increased number of pole units without sacrificing the radial width available for coil placement, thereby maintaining both high magnetic flux utilization and adequate coil placement space.
Data Source
AI summary
A motor includes: a shaft; a rotor; a first stator; and a second stator. The first stator includes: a plurality of first yoke parts; a plurality of first magnetic pole units; a coupling part coupling the plurality of first yoke parts in a circumferential direction; and a gap formed between the plurality of the first magnetic pole units adjacent in a circumferential direction. The second stator includes: a second yoke part; and a second magnetic pole unit, respectively. The second stator is disposed at the gap.