Wound Rotor Synchronous Motor Core With Integrated Wedge Support
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Solution Overview
Problem
Wound rotor driving motors face issues with rotor coil deterioration and damage due to high centrifugal forces during high-speed rotation, leading to increased copper loss and complexity in winding processes, which are not effectively addressed by existing technologies.
Innovation Solution
A rotor core structure with integrated wedge support and a heterogeneous division body design, where the first core body forms a cylindrical shape with protruding walls to support the coil assembly, reducing the need for separate wedges and enhancing winding efficiency and space factor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If separate wedges are inserted between rotor teeth to support centrifugal force, then mechanical strength is improved, but device complexity increases
Solution Approach 1:
The wedge-shaped support structure is merged with the rotor core body, forming an integrated structure where the rotor core includes protrusions that extend between rotor teeth. This eliminates the need for separate wedge components while maintaining the mechanical strength to support centrifugal forces during high-speed rotation.
2Device complexity
If rotor teeth are integrally formed at the rotor core, then structural simplicity is maintained, but winding operation ability deteriorates
Solution Approach 1:
The rotor core is segmented into a core body with protrusions that create distinct winding spaces. The protrusions divide the rotor core into multiple regions, allowing the winding device to access and wind coils more effectively while maintaining integral formation of the rotor teeth.
3Device complexity
If rotor teeth are integrally formed, then manufacturing simplicity is maintained, but winding space factor deteriorates
Solution Approach 1:
The rotor core protrusions extend in the radial direction between the rotor teeth, creating additional dimensional space for winding operations. This radial extension of the core structure increases the available winding space factor while maintaining manufacturing simplicity through integral formation.
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 design improves mechanical strength against centrifugal forces, reduces the number of components, and simplifies the winding process, thereby enhancing the motor's performance and reducing costs.
Implementation Method 1
a large centrifugal force is applied to the rotor coil when the rotor rotates by a high speed
Implementation Method 2
A magnetic field is generated when power is applied to the coils of the stator and the rotor, and the rotator is rotated by a magnetic action generated between the stator and the rotor
Data Source
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AI summary
The present disclosure provides a rotor of the wound rotor driving motor including: a first core body having an outer surface and an inner surface, wherein the first core body forms a space inside of the first core body; a second core body being inserted into inside of the first core body, wherein the second core body contacts with the inner surface of the first core body; and a coil assembly combined to the second core body in a radial direction.