Segmented Stator Core Layout for Easier Coil Slot Insertion
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Solution Overview
Problem
In conventional rotating electric machines, the stator coils face difficulty in being inserted into slots due to the limited size of the magnet yoke portion gaps, which hinders easy insertion while also limiting the enhancement of output performance.
Innovation Solution
The rotating electric machine design includes a stator core composed of a first stator core and a second stator core with magnet yoke portions, allowing the stator coils to be easily inserted without passing through gaps of the magnet yoke portions, thereby enabling the enlargement of the magnet yoke portions for improved output performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the gap of the magnet yoke portion is formed larger to allow easy insertion of stator coils, then the ease of operation is improved, but the magnet yoke portion becomes smaller and the output performance cannot be sufficiently obtained
Solution Approach 1:
The stator core is divided into a first stator core and a second stator core with magnet yoke portions. This segmentation allows the magnet yoke portions to be positioned such that stator coils can be inserted from the radially inner side without passing through gaps, while still maintaining sufficient magnet yoke portion size for high output performance.
Solution Approach 2:
The patent changes the insertion path of the stator coils from passing through the gap of the magnet yoke portion (radial direction) to being inserted from the radially inner side. This dimensional change in the insertion approach allows the magnet yoke portion to maintain its size while enabling easy coil insertion.
2Power
If the gap of the magnet yoke portion is formed small to increase the magnet yoke portion size, then the power is improved, but the stator coils are difficult to be inserted into the slots
Solution Approach 1:
By segmenting the stator core into first and second stator cores, the magnet yoke portions can be positioned to provide sufficient size for high power output while allowing stator coils to be inserted from the radially inner side without requiring large gaps.
Solution Approach 2:
The patent changes the insertion approach to from the radially inner side, which allows the magnet yoke portion to maintain sufficient size for high power output while still enabling easy coil insertion without large gaps.
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 facilitates easy insertion of stator coils while enhancing the output performance of the rotating electric machine by allowing for larger magnet yoke portions, which improves magnetic flux and torque generation.
Implementation Method 1
a magnet yoke portion made of magnetic material is provided between the stator coil and the stator magnet to improve the output performance
Implementation Method 2
The high-speed rotor is rotated at a high speed according to a magnetic gear effect due to rotation of the low-speed rotor, and accordingly, induced power is generated in the stator coil
Implementation Method 3
The high-speed rotor is rotated at a high speed according to a magnetic gear effect due to rotation of the low-speed rotor
Data Source
AI summary
Provided is a rotating electric machine in which stator coils can be easily inserted into slots while the effect of improving the output performance by a magnet yoke portion is enhanced. The rotating electric machine includes: a stator including a stator core having a plurality of slots, stator coils, and stator magnet, the stator coil and the stator magnet being inserted in each of the plurality of slots; a first rotor; and a second rotor. The stator core has a magnet yoke portion between the stator coil and the stator magnet, and is composed of a first stator core, and a second stator core having the magnet yoke portion.