Stator Winding with Nested Conductive Pins
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Solution Overview
Problem
The existing methods for winding stators in rotating electrical machines, particularly those with conductive pins, face challenges in reducing the size of the stator while minimizing the number of electrical connection connectors and maintaining efficient magnetic field homogeneity.
Innovation Solution
The proposed solution involves arranging conductive pins in multiple layers around the stator, with angled junctions to reduce axial size and using electrical connection members to connect these pins, ensuring that currents flow in the same direction to homogenize the magnetic field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conductive pins are arranged in multiple layers with bent portions protruding from the stator, then the winding can be formed on radial teeth with smaller angular spacing, but the axial size of the stator increases
Solution Approach 1:
The conductive pins are arranged in multiple radial layers (first, second, third, fourth layers from outside to inside) instead of being placed in a single layer. This multi-layer radial arrangement allows the winding to accommodate smaller angular spacing between radial teeth while managing the axial footprint through structured layering rather than simple protrusion extension.
Solution Approach 2:
The conductive pins are nested in concentric radial layers within the stator winding structure. Each layer contains pins positioned at different radial distances from the stator center, with the first layer being radially outside and the fourth layer radially inside. This nesting arrangement allows efficient use of radial space to accommodate multiple conductive paths without proportionally increasing axial dimensions.
2Reliability
If numerous electrical connectors are used to link conductive pins and form electrical paths, then complete electrical connectivity can be achieved, but the device complexity increases
Solution Approach 1:
Multiple conductive pins across different radial layers are electrically connected to form continuous electrical paths. The connection structure merges the functionality of multiple separate connectors into an integrated arrangement where pins in the first, second, third, and fourth layers are linked to form complete electrical paths, reducing the total number of discrete connector components needed.
Solution Approach 2:
The electrical connection structure serves multiple functions simultaneously: it provides electrical connectivity between pins in different radial layers, forms complete electrical paths for current flow, and maintains mechanical positioning of the conductive pins. This multi-functionality reduces the need for separate specialized connectors for each function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces the axial size of the stator, minimizes the number of connectors needed, and enhances the homogeneity of the magnetic field, improving the efficiency and performance of the rotating electrical machine.
Implementation Method 1
the rotor and stator cooperate via a magnetic field... the electrical winding is supplied with electric current via an electronic module, generating a rotating magnetic field at the winding level, which in turn drives the rotor's rotation
Implementation Method 2
each conductive pin comprises two substantially parallel conductive segments electrically connected by a U-shaped bend... forming a continuous electrical path
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The invention relates to a stator (200) comprising an annular body (210) provided with a plurality of slots (213) and a winding (400) comprising a first series (A) of needles (1) and a second series (B) of needles (1) which are arranged in the slots (213) in a plurality of superimposed layers (C1-C4), each needle (1) comprising a first segment (1A) and a second segment (1B) which are each arranged in different slots (213) and connected by an elbow connector (1C). According to the invention, the first segments (1A) and the second segments (1B) of the first series (A) are respectively arranged in a first layer (C1) and in a second layer (C2) and the first segments (1A) and the second segments (1B) of the second series (B) are respectively arranged in a third layer (C3) and in a fourth layer (C4), the first series (A) being electrically connected to the second series (B).