Orthocyclic Stator Winding With Offset Turns For Terminal Positioning
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Solution Overview
Problem
The standard winding configuration of coils in rotating electrical machines often fails to position the coil inputs and outputs effectively within the desired interconnection areas with machine control electronics, leading to challenges in magnetic performance and maintenance.
Innovation Solution
The use of a coil insulator with a through opening and a coil formed by a wire wound around it, featuring a plurality of layers with offset turns to ensure proper positioning and insulation distance between coils, allowing for efficient connection and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If standard winding configuration is used with fixed parameters (tooth size, wire diameter, number of turns), then magnetic performance is achieved, but coil inputs and outputs cannot be positioned in desired interconnection areas
Solution Approach 1:
The patent applies preliminary action by introducing offset turns at the beginning and/or end of the winding sequence, before the standard concentric winding is completed. This preliminary offset positioning allows the coil terminals to be pre-positioned in desired interconnection areas while maintaining the standard winding parameters for magnetic performance.
Solution Approach 2:
The patent transitions from a two-dimensional concentric winding pattern to a three-dimensional arrangement by adding offset turns that extend beyond the standard radial layers. This dimensional change enables terminal positioning in multiple angular locations around the stator, providing adaptability to different interconnection area requirements.
2Ease of manufacture
If turns are positioned side by side in standard layers, then manufacturing is simplified, but insulation distance between adjacent coils cannot be guaranteed
Solution Approach 1:
The patent applies local quality by introducing offset turns specifically at the beginning and/or end of the winding sequence, while maintaining standard concentric positioning for the intermediate turns. This localized modification provides the necessary insulation distance and terminal positioning without complicating the majority of the winding structure.
3Manufacturing precision
If offset turns are added to position terminals, then terminal positioning is improved, but coil structure complexity increases
Solution Approach 1:
The patent applies partial action by adding offset turns only when and where needed - specifically at the beginning and/or end of the winding sequence - rather than modifying the entire winding structure. This partial modification achieves terminal positioning precision while minimizing the increase in overall coil structure complexity.
Data Source
AI summary
The invention pertains to an assembly including a coil insulator (20) comprising a transverse opening and a coil (19) formed by a wire (21) wound around said coil insulator (20); -said coil (19) comprising a plurality of layers of turns (S) superposed over one another; -each layer of turns comprising a set of coaxial turns (S), characterized in that said coil (19) comprises at least one first offset turn (SD1) passing over at least two turns (S) of a lower layer and in that said first offset turn.