Brushless DC Motor with Off-Center Magnets
Solution Overview
Problem
Conventional electromagnetic motors are inefficient and unable to effectively replace internal combustion engines, requiring more energy to produce comparable power levels, which exacerbates the issue of dwindling oil-based fuel sources and increased global demand.
Innovation Solution
A DC brushless motor design featuring a shaft with off-center permanent magnets and radially equidistant electromagnets and coils, controlled by a relay switch and sensor system for efficient energy transmission and rotation, allowing for synchronous operation of discs and energy generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional electromagnetic motors are used to replace internal combustion engines, then oil-based fuel consumption is reduced, but energy efficiency deteriorates requiring significantly more energy to generate comparable power levels
Solution Approach 1:
The motor employs periodic switching of electromagnets in a specific sequence to create continuous rotational motion. The controller activates electromagnets alternately as the disc rotates, with each electromagnet attracting the permanent magnet in sequence, providing periodic electromagnetic forces that maintain efficient continuous rotation rather than requiring excessive continuous energy input.
Solution Approach 2:
The invention replaces the mechanical friction-based contact system of traditional motors with a magnetic field-based system. Electromagnets create magnetic fields that interact with permanent magnets mounted on the rotating disc, eliminating the need for mechanical brushes and commutators. This substitution reduces mechanical losses and improves overall energy efficiency by using electromagnetic forces instead of mechanical contact.
2Productivity
If off-center permanent magnets are mounted on rotating discs with radially equidistant electromagnets, then rotational efficiency is improved, but device complexity increases due to precise positioning requirements
Solution Approach 1:
The permanent magnets are deliberately mounted off-center on the rotating disc rather than at the center. This asymmetric positioning creates an optimal magnetic interaction pattern with the radially equidistant electromagnets, allowing the magnetic field to effectively drive rotation. The off-center position ensures that the permanent magnet passes close to each electromagnet in sequence, maximizing magnetic coupling efficiency while maintaining manageable structural complexity.
Solution Approach 2:
The electromagnets are positioned at radially equidistant locations around the disc, creating a symmetric radial arrangement. This equipotential-like positioning ensures that each electromagnet is at an equal distance from the center of rotation, providing uniform magnetic field strength and consistent interaction with the off-center permanent magnet throughout the rotation cycle, thereby simplifying the control requirements.
3Loss of energy
If relay switches and sensors are added to control electromagnet activation, then energy transmission efficiency is improved, but device complexity increases
Solution Approach 1:
Sensors detect the position of the permanent magnet on the rotating disc and provide feedback signals to the controller. Based on this position feedback, the controller activates the appropriate electromagnet at the correct moment in the rotation cycle. This feedback mechanism ensures that electromagnetic energy is transmitted only when needed and at optimal times, maximizing energy transmission efficiency while using simple on/off control logic rather than complex continuous control.
Solution Approach 2:
The sensor system automatically detects the permanent magnet's position and triggers the relay switch to activate the electromagnet without requiring external intervention. The system self-regulates the timing and sequencing of electromagnet activation based on the rotational position, providing automatic energy management that improves transmission efficiency while keeping the control architecture relatively simple through autonomous operation.
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 motor achieves significant energy conservation and efficiency, providing a viable substitute for internal combustion engines and reducing dependence on oil-based products.
Implementation Method 1
a magnetic force generated by the electromagnet with respect to the at least one permanent magnet would be effective for inducing movement of the permanent magnet and consequent rotation of the at least one disc
Implementation Method 2
at least one coil is mounted to the frame in rotational magnetic proximity to the at least one permanent magnet
Data Source
AI summary
A motor includes a frame, a shaft rotatably mounted onto the frame, and at least one disc mounted onto the shaft. At least one permanent magnet is mounted on the disc, and at least one electromagnet and at least one coil are mounted to the frame in rotational magnetic proximity to the permanent magnet. A battery is connectable to the electromagnet and the coil for energizing the electromagnet and for receiving electrical current from the coil for charging the battery. A relay switch controls the transmission of electrical power from the battery to the electromagnet. A sensor generates a signal to the relay switch to activate electrical power to the electromagnet upon sensing that the permanent magnet is positioned with respect to the electromagnet such that a magnetic force generated by the electromagnet would be effective for inducing movement of the permanent magnet and consequent rotation of the disc.