Three-Tooth Stator Winding Layout for Stable Phase Wire Routing
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Solution Overview
Problem
Existing technologies lack a specific winding configuration for winding phase windings of two different phases on three teeth consecutively arranged in the circumferential direction of a stator, leading to issues like conductor wire loosening and winding irregularities.
Innovation Solution
A stator design with a stator core having a circular ring-shaped back yoke and teeth, where two winding segments of each phase are continuously wound around three consecutive teeth, with a tooth-to-tooth guide portion and electrical insulation members to guide and hold conductor wire end portions, ensuring optimal winding and connection to busbars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two phase windings of different phases are wound on each set of three teeth consecutively arranged in the circumferential direction, then ripple electric current in stator windings is reduced, but conductor wire loosening and winding irregularities occur
Solution Approach 1:
The stator teeth are divided into different groups (first group with teeth T1-T3, second group with teeth T4-T6, etc.), and different winding patterns are applied to each group. Specifically, in the first group, phase windings U and V are wound on teeth T1-T3, while in the second group, phase windings V and W are wound on teeth T4-T6. This segmentation allows the patent to reduce ripple electric current while maintaining winding regularity through structured organization.
Solution Approach 2:
Different winding configurations are applied to different local regions (teeth groups) of the stator. The patent specifies that in the first group, two winding segments of phase winding U and two winding segments of phase winding V are wound continuously on teeth T1-T3, while in the second group, two winding segments of phase winding V and two winding segments of phase winding W are wound continuously on teeth T4-T6. This local differentiation resolves the contradiction by optimizing each region's winding pattern.
2Reliability
If two phase windings of different phases are wound on each set of three teeth consecutively arranged in the circumferential direction, then ripple electric current in stator windings is reduced, but winding process complexity increases
Solution Approach 1:
The complex winding task is segmented into manageable groups where each group follows a standardized pattern. The patent divides the stator teeth into multiple groups of three consecutive teeth each, and applies a systematic winding approach to each group, reducing the overall complexity while achieving ripple current reduction.
Solution Approach 2:
The patent establishes predetermined winding patterns and configurations before the actual winding process. By pre-defining which phase windings are wound on which tooth groups and specifying the continuous winding of two segments per phase per group, the complexity is managed in advance, making the manufacturing process more controllable.
Data Source
AI summary
A stator includes a stator core and stator windings. The stator windings include phase windings, each of which is provided for a corresponding one of a plurality of phases. Each phase winding has two winding segments. Among the plurality of teeth, a first tooth, a second tooth and a third tooth, which are consecutively arranged in a circumferential direction, are wound with a first phase winding and a second phase winding among the phase windings such that the two winding segments of the first phase winding are wound continuously around the first tooth and the second tooth, respectively, and the two winding segments of the second phase winding are wound continuously around the second tooth and the third tooth, respectively.