Insulated Stator-Rotor Assembly With Integrated Torque Support
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Solution Overview
Problem
Existing electric machines require significant material expenditure, complexity, and space to achieve basic insulation between the stator, rotor, and housing, which can be inefficient and costly.
Innovation Solution
The implementation of an electrically insulating torque support that mechanically connects the stator to the housing, along with electrically insulating flanges on the rotor shaft, to achieve basic insulation with fewer components and assembly steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If insulation material is introduced into all slots of the stator to achieve basic insulation, then electrical safety is improved, but device complexity and material expenditure increase
Solution Approach 1:
The patent combines the mechanical support function and the electrical insulation function into a single integrated torque support component. This component simultaneously provides mechanical torque transmission between the stator and housing while providing basic electrical insulation, thereby reducing assembly complexity and material expenditure while maintaining electrical safety
Solution Approach 2:
The torque support is designed as a multi-functional component that performs both mechanical support (torque transmission) and electrical insulation functions. This universal component eliminates the need for separate insulation materials in stator slots, resolving the contradiction between electrical safety and assembly complexity
2Reliability
If insulation material is introduced into all slots of the stator to achieve basic insulation, then electrical safety is improved, but installation space is consumed
Solution Approach 1:
The torque support merges mechanical support and electrical insulation functions into one component, providing basic insulation without requiring additional space in the stator slots. The insulation function is achieved through the torque support's material properties rather than through additional insulating materials placed in the slots
Solution Approach 2:
The multi-functional torque support provides both mechanical torque transmission and basic electrical insulation without consuming additional installation space in the stator, as the insulation capability is inherent to the torque support component itself
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 solution reduces the effort and cost associated with achieving basic insulation, while maintaining effective electrical isolation and avoiding additional structural adaptations or space requirements.
Implementation Method 1
an electrically insulating torque support is provided that mechanically connects the stator to the housing
Implementation Method 2
a shaft of a rotor of the electric machine has a flange made of electrically insulating material
Data Source
AI summary
An electric machine includes a stator, a rotor, a housing and a shaft. The stator is connected to the housing via an electrically insulating torque support. An electrically insulating flange is disposed on the shaft. The shaft is connected to a flange of a bearing shaft via said flange, the bearing shaft housed in a bearing which is arranged in the housing.