Permanent Magnet Generator Reducing Cogging Torque
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Solution Overview
Problem
Magnetic motor systems using permanent magnets face issues with energy conversion losses due to cogging torque and require additional electrical power inputs, making them ineffective during power outages.
Innovation Solution
A permanent magnet generator system with a pendulating master magnet and oscillating slave magnets, where the magnetic fields are restricted in oscillation using pegs or springs, allowing for circular rotation without additional electrical power and reducing cogging torque by aligning magnetic fields for repulsive force generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If additional electrical power input is used to drive the magnetic motor, then the device can operate continuously, but it becomes useless during power outages and increases energy consumption
Solution Approach 1:
The generator uses the rotational motion of the rotor itself to generate electrical power through electromagnetic induction. The slave magnets rotating past the stator windings induce current that powers the actuator, creating a self-sustaining system that doesn't require external electrical input during operation.
2Force
If opposing magnetic fields are allowed to approach one another prior to direct alignment, then magnetic interaction is maximized, but energy conversion losses in the form of cogging torque occur
Solution Approach 1:
The actuator performs preliminary action by precisely positioning the master magnet and controlling the timing of magnetic field interactions. This ensures that slave magnets are properly aligned before direct magnetic engagement, maximizing force while minimizing cogging torque through controlled sequential activation.
Solution Approach 2:
The system uses dynamic control where the actuator adjusts the positioning and timing of magnetic field interactions based on the rotational position of the rotor. This dynamic adjustment optimizes magnetic coupling at each moment, reducing energy losses from improper alignment while maintaining strong magnetic interaction.
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 system achieves efficient energy conversion with reduced cogging torque losses and operates without additional electrical power inputs, ensuring functionality during power outages.
Implementation Method 1
When the push button is engaged, the master permanent magnet and a first of the plurality of the slave permanent magnet's magnetic fields come into contact and repel each other, driving a circular rotation of the rotor
Implementation Method 2
A permanent magnet generator comprising a stator comprising a pendulating master permanent magnet and a push button. The master permanent magnet is restricted in its oscillation. The rotor comprising a plurality of oscillating slave permanent magnets
Data Source
AI summary
A permanent magnet generator consisting of a stator including a pendulating master permanent magnet and a push button. The master permanent magnet is restricted in its oscillation. The master permanent magnet is oriented with a predetermined polarity towards a rotor. The rotor including a plurality of oscillating slave permanent magnets and an axel. The slave permanent magnets are equivalently spaced around an outer edge of said rotor. The slave permanent magnets are restricted in their oscillations and the slave permanent magnets are oriented with the predetermined polarity the outer edge of the rotor. When the push button is engaged, the master permanent magnet and a first of the plurality of the slave permanent magnet's magnetic fields come into contact and repel each other, driving a circular rotation of the rotor. When the circular rotation of the rotor aligns the master permanent magnet and the plurality of the slave permanent magnet's magnetic fields in sequence.