Permanent Magnet Machine With Segmented Pole Grooves
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Solution Overview
Problem
Existing magnetically operated devices for translational or rotational motion do not effectively utilize a coupled magnet arrangement with permanent magnets oriented in the direction of motion and gapped-spaced-apart configuration, leading to magnetic interplay issues during relative motion.
Innovation Solution
A magnet machine design featuring a first element with a sequenced array of N-pole and S-pole facing magnets and a second element with a single magnet having a pole surface parallel to the first magnets, disrupted by grooves to eliminate end effects, along with a solenoid for starting or braking, enabling continuous operation through magnetic interplay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If permanent magnets are arranged in a sequenced array with N-pole and S-pole facing each other across gaps, then magnetic attraction and repulsion forces are generated for continuous operation, but magnetic interplay and end effects cause magnetic drag during relative motion
Solution Approach 1:
The pole face of the second magnet is segmented into multiple spaced-apart grooves that divide the continuous magnetic field into discrete segments. This segmentation eliminates the end effects that cause magnetic drag while preserving the attractive and repulsive forces between the sequenced N-pole and S-pole magnets of the first element and the segmented pole face of the second magnet, enabling continuous operation with reduced energy loss.
2Ease of operation
If a solenoid is mounted within the grooves to provide starting or braking force, then motion control is enabled, but device complexity increases
Solution Approach 1:
The grooves that were primarily designed to eliminate end effects and reduce magnetic drag are simultaneously utilized as mounting locations for solenoids. This multi-functional design allows the same structural feature to serve both magnetic field optimization and motion control purposes, enabling starting and braking capabilities without proportionally increasing device complexity.
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 design achieves continuous operation with reduced magnetic drag, allowing for efficient linear translation or rotation by leveraging magnetic attraction and repulsion forces, and enables starting and stopping of motion through solenoid control.
Implementation Method 1
magnetic attraction and repulsion forces
Implementation Method 2
produce a Lorentz's force between the first coil and the first magnet groups
Implementation Method 3
solenoid mounted within one or more of the grooves so provide a starting force or a braking force
Data Source
AI summary
A magnet machine may translate or rotate with one element stationary and another element moving. One element has mounted thereon a plurality of magnets arranged in a sequenced array extensive in the direction of operation, the magnets fixed with N-pole magnet faces opposing S-pole magnet faces across gaps between the magnets, and side faces arranged in a plane. A second element has a single or integrated magnet mounted with one pole face positioned parallel to, and gapped apart from the plane of the plurality of magnets. This pole face is disrupted by an array of spaced apart grooves. The direction of motion is in the plane. A solenoid may be mounted within one or more of the grooves so provide a staring force or a braking force to the moving element.