Multi-layer Arc-shaped Magnet Rotor with Dividers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Interior permanent magnet machines face challenges in achieving high rotational speeds and reducing rotational stress due to the limitations of undivided arc-shaped magnet configurations, which often lead to decreased performance and reliability at higher operating speeds.
Innovation Solution
The rotor configuration includes integrally formed dividers that create multiple layers of arc-shaped segments, allowing for increased rotational speed and reduced stress by optimizing the placement and orientation of magnets, enabling a multi-layer configuration that can withstand higher operating speeds with improved deflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If undivided arc-shaped magnets are used in the rotor, then the structure is simple, but the rotational stress increases and reliability decreases at higher operating speeds
Solution Approach 1:
The patent divides the rotor into multiple layers with dividers creating separate segments for magnets. This segmentation reduces rotational stress by distributing forces across multiple smaller segments rather than one large undivided structure, thereby improving reliability at high operating speeds while maintaining manageable structural complexity.
2Ease of manufacture
If undivided arc-shaped magnets are used in the rotor, then the manufacturing process is simple, but the rotational speed capability is limited
Solution Approach 1:
The rotor is segmented into multiple layers with dividers that create separate magnet placement zones. This segmentation enables the rotor to withstand higher rotational speeds by reducing stress concentrations, while the modular layer structure allows for systematic manufacturing processes that can efficiently assemble the divided components.
Solution Approach 2:
The patent introduces a multi-layer dimensional structure with dividers creating stacked layers. This adds a vertical dimension to the magnet arrangement, allowing magnets to be positioned in multiple layers rather than a single plane. This dimensional change distributes rotational forces more effectively, enabling higher speed operation.
3Reliability
If multi-layer arc-shaped magnets are positioned in the rotor, then rotational speed increases and stress reduces, but the device complexity increases
Solution Approach 1:
The rotor is divided into multiple layers with dividers creating distinct segments. This segmentation improves reliability by distributing rotational stress across multiple smaller components. The modular segmented structure allows for systematic manufacturing and assembly, managing the complexity through standardized repeating units rather than a monolithic complex design.
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 enhances rotational speed and reduces stress, enabling the interior permanent magnet machine to operate effectively at higher speeds with improved reliability and performance compared to traditional undivided arc-shaped magnet designs.
Implementation Method 1
An electric motor uses electric potential energy to produce mechanical energy through the interaction of magnetic fields and current-carrying conductors
Data Source
AI summary
An interior permanent magnet machine includes a rotor configured to magnetically interact with a stator. First and second dividers are integrally formed within the rotor and configured to create a first layer of three respective first segments. Each of the respective first segments may be substantially arc-shaped. A plurality of first magnets may be positioned in the first layer. The first magnets may be substantially arc-shaped and defined around an arc center. A third and a fourth divider may be integrally formed within the rotor and configured to create a second layer of three respective second segments. The placement of dividers or structural webs provides for increased rotational speed and reduced rotational stress compared to an undivided arc-shaped magnet configuration.