Segmented Magnetic Disc Motor with Offset Rotor and Stator
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Solution Overview
Problem
Existing electric motors and generators face issues with reliability and starting efficiency due to inefficient use of magnetic poles and lack of compact design, especially in applications requiring high performance and versatility.
Innovation Solution
A design featuring radially segmented magnetic discs with permanent and electromagnets, where magnets are placed on both sides of each other, allowing for a strong and compact motor/generator with offset magnetic segments, eliminating the need for a start capacitor and enabling easy assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If magnets are placed on both sides of each other in radially segmented magnetic discs, then the motor strength and compactness are improved, but the device complexity increases
Solution Approach 1:
The magnetic discs are divided into radially segmented magnetic segments with alternating polarities. This segmentation allows magnets to be placed on both sides of each other, creating a compact design with strong magnetic fields. The segmented structure enables efficient use of magnetic poles while maintaining a compact form factor.
Solution Approach 2:
The patent transitions from traditional single-sided magnet arrangement to a dual-sided configuration where magnets are placed on both sides of each other in the radial direction. This dimensional change in magnet arrangement maximizes the use of magnetic poles within a compact space, significantly enhancing motor strength without proportionally increasing device complexity.
2Ease of operation
If offset magnetic segments are used in the rotor and stator, then the starting efficiency is improved and start capacitor can be eliminated, but the manufacturing precision requirements increase
Solution Approach 1:
The patent employs offset magnetic segments where the rotor's magnetic segments are deliberately misaligned relative to the stator's magnetic segments. This asymmetric arrangement creates a starting torque that eliminates the need for a start capacitor. The offset design improves starting efficiency by ensuring that magnetic poles are never perfectly aligned, maintaining continuous torque generation during startup.
3Adaptability or versatility
If permanent magnets and electromagnets are combined in the magnetic discs, then the versatility and adaptability are improved, but the loss of substance increases
Solution Approach 1:
The patent combines permanent magnets and electromagnets in the magnetic discs to create a multi-functional system. The permanent magnets provide a baseline magnetic field, while the electromagnets allow for adjustable magnetic field strength and polarity. This combination enables the motor to adapt to various voltages, amperages, and frequencies, significantly enhancing versatility.
Solution Approach 2:
By integrating electromagnets with permanent magnets, the system can dynamically change magnetic field parameters such as strength and polarity. This parameter adjustment capability allows the motor to operate efficiently across different voltage, amperage, and frequency conditions, reducing magnetic material loss by optimizing performance for each operating condition.
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
The solution provides a highly efficient, reliable, and compact electric motor/generator that is less prone to malfunctioning and easier to start, with the ability to adapt to various voltage, amperage, and frequency requirements, suitable for diverse applications including vehicles and aircraft.
Implementation Method 1
first discs coupled to the rotatable shaft and comprising radially segmented two or more magnetic segments comprising first magnets; and second discs coupled to the housing comprising radially segmented second magnetic segments extending between the first magnetic segments in radial direction and which are provided with second magnets
Implementation Method 2
the first magnets are permanent magnetic segments the second magnets are electromagnets, wherein a pole direction between a magnetic north pole and a magnetic south pole of each of the first and second magnets are directed along the rotatable shaft
Data Source
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Figure 3
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AI summary
The present invention provides a device comprising a housing; a shaft mounted rotatably in or on the housing and having at least one shaft end extending through a side wall of the housing; one, two or more magnetic segments coupled to the rotatable shaft and comprising first magnets; and second magnetic segments which are coupled to the housing and extend between the first magnetic segments in radial direction and which are provided with second magnets, wherein the first magnets are electromagnets and the second magnets are permanent magnetic segments, or vice versa.