Axial-Gap Coreless Motor Case Segmentation for Rotor Balance
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Solution Overview
Problem
Vibration caused by rotor imbalance is a significant issue for increasing the speed of rotary electric machines, particularly in those with multiple rotors and stators.
Innovation Solution
The axial-gap coreless rotary electric machine design includes rotors with field magnets attached to a rotary shaft, stators with armature coils divided into first and second segments, and a case divided into corresponding segments, allowing for integral adjustment of rotor balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If multiple rotors and stators are combined to achieve higher speed operation, then the speed and power output are improved, but vibration caused by rotor imbalance becomes pronounced
Solution Approach 1:
The case is divided into a first case segment and a second case segment disposed to face each other. The armature coils are divided into first coil segments and second coil segments corresponding to each case segment. This segmentation allows the rotors to be integrally disposed in one case segment, enabling integral balance adjustment while maintaining the multiple rotor-stator configuration for high-speed operation
Solution Approach 2:
The design enables integral balance adjustment of rotors before assembly into the complete machine. By preparing the case and armature coil segments separately with predetermined positions, the rotors can be balanced in advance in the first case segment, preventing vibration issues before the machine operates at high speeds
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 effectively suppresses vibration caused by rotor imbalance, enabling higher speed operation in rotary electric machines with multiple rotors and stators.
Implementation Method 1
rotors, in which field magnets are attached to a rotary shaft, rotate about a rotary shaft. The stators each include a plurality of armature coils disposed to face the field magnets
Data Source
AI summary
An axial-gap coreless rotary electric machine includes rotors, stators, and a case. Armature coils of the stators include a first coil segment and a second coil segment facing the first coil segment. The case includes a first case segment and a second case segment facing the first case segment.