Rotating Power Machine Pole Layout With Different Symmetry Regions
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Solution Overview
Problem
Existing electromagnetic rotating power machines face challenges in achieving high performance due to complex magnet arrangements that weaken magnetization and require significant volume for electromagnetic coils, limiting multi-polarization and increasing manufacturing complexity.
Innovation Solution
A motor structure with a simplified magnetic circuit for permanent magnets and reduced electromagnetic coil windings, utilizing regions of different rotational symmetry for N and S poles, and incorporating magnetically soft or hard magnetic materials into the rotor and stator to enhance magnetic interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a complex magnet arrangement with alternating N and S poles is used to generate maximum magnetic field, then the magnetic field strength is improved, but the magnetization is weakened due to shape anisotropy and the device complexity increases
Solution Approach 1:
The motor is divided into multiple rotationally symmetric regions, each containing only N-poles or only S-poles, rather than alternating N-S pairs. This segmentation allows each region to be optimized independently and reduces the overall complexity of the magnet arrangement while maintaining strong magnetic fields through the use of multiple regions working in parallel
Solution Approach 2:
The patent breaks the traditional symmetric alternating N-S pole pattern by creating asymmetric pole distributions across different rotationally symmetric regions. Each region has a unique pole configuration (N-only or S-only), which eliminates the demagnetizing effects of alternating poles while maintaining rotational symmetry at the system level
2Force
If curved magnetic circuits and soft magnetic materials are combined to strengthen the field magnet, then the magnetic field is improved, but the volume required increases
Solution Approach 1:
The invention extracts and eliminates the need for complex curved magnetic circuits and extensive soft magnetic materials by using a simplified configuration where permanent magnets are directly arranged in rotationally symmetric regions. This removal of unnecessary components reduces the motor volume while maintaining field strength through optimized permanent magnet placement
Solution Approach 2:
The patent changes the fundamental parameter of pole arrangement from alternating N-S pairs to single-pole regions, which fundamentally alters the magnetic circuit requirements. This parameter change allows for a more compact design with reduced volume while maintaining or improving magnetic field strength through direct permanent magnet-to-stator interactions
3Stability of the object's composition
If the number of poles is increased to achieve smooth rotation, then the rotational smoothness is improved, but the volume required for electromagnetic coils increases
Solution Approach 1:
The patent transitions from increasing the number of alternating N-S pole pairs to creating multiple rotationally symmetric regions with different pole types. This dimensional change in the design approach allows for high pole counts that provide smooth rotation while reducing coil volume by eliminating the need for complex winding patterns required by traditional alternating pole configurations
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 allows for a more efficient and cost-effective motor design with reduced manufacturing complexity, maximizing the characteristics of permanent magnets and enabling higher output without increasing volume.
Implementation Method 1
An electromagnet includes a coil wound to magnetize a magnetic core (core) made of materials such as an electromagnetic steel sheet using an electric current
Implementation Method 2
A permanent magnet has magnetization oriented in one direction inside the material, even without receiving a magnetic field from outside, and it causes magnetic charge to seep through the surface of the material where the magnetization disappears
Implementation Method 3
a gap is provided between an electromagnetic coil and a permanent magnet, and an electromagnetic force produced in the gap is controlled to achieve the rotation mechanism
Data Source
AI summary
An electromagnetic rotating power machine has at least one rotary shaft, a rotor, and a stator. The electromagnetic rotating power machine includes a spatial region between the rotor and the stator where electromagnetic repulsion or electromagnetic attraction acts. The spatial region includes at least two regions of different rotational symmetry. At least one soft or hard magnetic material is incorporated into each of the rotor and the stator. Magnetic pole surfaces, which are pair-polarized to N and S poles in the magnetic material, of the rotor and the stator are arranged in the regions of different rotational symmetry.