PM Motor Magnetic Layout to Revive Repulsive Force
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Permanent magnet electric motors suffer from inefficiencies due to the wastage of repulsive force during the interaction between electromagnets and permanent magnets, primarily caused by the creation of a third pole during repulsion, which damages the repulsive force and reduces overall output power.
Innovation Solution
A new magnetic configuration that revitalizes the repulsive force by minimizing opposing attractions, using a permeable permanent magnet and independent like-field-poles to enhance repulsion and attraction forces without additional current input, resulting in a more efficient magnetic interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional dipolar field-poles configuration is used in PM motors, then the motor structure is simple and easy to manufacture, but the repulsive force is damaged due to creation of third pole, reducing output power and efficiency
Solution Approach 1:
The motor is divided into independent working units, each consisting of one PM field-pole interacting with two energized electromagnetic teeth. This segmentation allows each unit to operate independently with optimized magnetic interactions, eliminating the third-pole problem while maintaining manufacturing simplicity
Solution Approach 2:
Instead of using traditional unlike-pole (dipolar) field-poles, the invention uses like-pole (monopolar) field-poles. This inversion of the conventional approach eliminates the creation of third poles during repulsion, thereby preserving repulsive force and increasing output power
2Power
If additional current is supplied to enhance repulsive force, then the output power increases, but the input power and energy consumption increase proportionally
Solution Approach 1:
The permeable permanent magnet field-poles generate enhanced repulsive force through their own magnetic flux without requiring additional current input. The system uses its existing magnetic field resources more effectively, achieving higher output power without proportional increase in energy consumption
Solution Approach 2:
The invention changes the magnetic parameters by using permeable permanent magnets with optimized permeability characteristics. This parameter change allows the existing magnetic flux to produce stronger repulsive forces, increasing output power without additional electrical energy input
3Productivity
If permeable permanent magnet field-poles are used to enhance repulsive force, then the efficiency increases significantly, but the manufacturing complexity and cost increase
Solution Approach 1:
Instead of making the entire motor complex, the invention applies permeable permanent magnets only to the field-poles where magnetic interaction occurs. This localized application of enhanced material properties achieves high efficiency while minimizing overall manufacturing complexity
Solution Approach 2:
The field-poles use composite construction combining permanent magnet material with high permeability characteristics. This composite approach achieves the desired magnetic properties through material composition rather than complex structural designs, balancing efficiency with manufacturability
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 significantly increases the efficiency of permanent magnet motors by at least double the efficiency of current motors in the same power range, utilizing the repulsive and attractive forces more effectively to enhance output power without increasing input power.
Implementation Method 1
This magnetic configuration revitalizes repulsive force in a PM motor without using additional current
Implementation Method 2
using a permeable permanent magnet and independent like-field-poles to enhance repulsion and attraction forces
Data Source
AI summary
This is a novel magnetic configuration that is to be used to build extra efficient PM motors. This magnetic configuration uses mono polarities of permanent magnet as field-poles instead of dipolar field-poles configuration. Armature teeth are built, energized and used very differently in this magnetic configuration. This configuration revitalizes repulsive force three times inside a running PM motor without using more than usual current. Revitalized repulsive force allows using very strong permanent magnets, which produces heavy attractive force in the same running motor. The revitalized repulsive force along with the heavy attractive force produces extra output power in the motor at no-cost. This magnetic configuration is self-sufficient and unparalleled. It could only be implanted in new designs of PM motors. This magnetic configuration has been built around new experimental findings. The functions of three newly invented electrical machines including a fully-functional prototype validate this magnetic configuration.