Planar Halbach Coil Array for Miniaturized Sinusoidal Magnetic Fields
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Solution Overview
Problem
Existing Helbeck permanent magnet array structures face challenges in miniaturization, rigidity, inability to achieve sinusoidal magnetic fields, and low electromagnetic utilization rates due to rigid structures and limitations of permanent magnet materials.
Innovation Solution
The development of Helbeck array planar coil structural units with concentric and spiral coil arrangements, including single-layer, double-layer, and multi-layer planar spiral structures, and various connection and expansion modes to form a flexible, planar coil structure that generates a Helbeck permanent magnet array characteristic magnetic field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If concentrated winding electromagnetic coil is used to form Helbeck permanent magnet array structure, then magnetic field generation capability is improved, but structural rigidity increases and miniaturization becomes difficult
Solution Approach 1:
The electromagnetic coil is divided into multiple independent planar coil units arranged in a Helbeck array configuration. Each planar coil unit can be independently controlled and positioned, transforming the rigid concentrated winding structure into a modular segmented system that maintains magnetic field generation capability while enabling flexibility and miniaturization.
Solution Approach 2:
The invention transitions from traditional three-dimensional concentrated winding coils to two-dimensional planar coil structures. This dimensional reduction allows the coils to be arranged in flat arrays, significantly reducing structural complexity and enabling miniaturization while maintaining the required magnetic field generation through optimized planar winding patterns.
2Strength
If Helbeck permanent magnet array structure is used, then strong magnetic field is achieved, but the structure becomes rigid and difficult to miniaturize
Solution Approach 1:
The invention replaces permanent magnet materials with electromagnetic coils actuated by control systems. This substitution eliminates the inherent rigidity of permanent magnet arrays while maintaining strong magnetic field generation capability, allowing for flexible planar coil configurations that can be easily miniaturized and reconfigured.
Solution Approach 2:
The static permanent magnet structure is replaced with dynamic electromagnetic coils that can adjust their magnetic field characteristics in real-time. The planar coil units can be independently controlled to generate, strengthen, or cancel magnetic fields as needed, providing dynamic adaptability that rigid permanent magnet structures cannot achieve.
3Power
If conventional electromagnetic coil is used, then magnetic field is generated, but sinusoidal magnetic field distribution is difficult to achieve due to magnetic leakage
Solution Approach 1:
Each planar coil unit in the Helbeck array is designed with specific winding patterns and orientations optimized for its local position in the array. By tailoring the local magnetic field contribution of each coil unit, the collective array achieves a sinusoidal magnetic field distribution across the target region, compensating for magnetic leakage effects through localized field shaping.
Solution Approach 2:
The invention incorporates control systems that can measure the actual magnetic field distribution and adjust the current in each planar coil unit accordingly. This feedback mechanism enables real-time optimization of the magnetic field waveform, ensuring sinusoidal distribution is achieved despite magnetic leakage and other non-ideal effects.
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 enables miniaturization, flexibility, and improved electromagnetic utilization rates while maintaining strong magnetic field intensity and sinusoidal distribution, reducing magnetic leakage and costs.
Implementation Method 1
the first substructures and the third substructures are concentric planar spiral coils with opposite magnetic circuits in a vertical direction after being electrified
Data Source
AI summary
The disclosure relates to the technical field of electromagnetic coils, in particular to a Helbeck array plane coil structural unit. The Helbeck array plane coil structural unit includes three substructures: the first substructure, the second substructure and the third substructure. The disclosure adopts the plane electromagnetic coil to form the Helbeck array permanent magnetic field effect, and aims to solve the problems that the existing Helbeck array permanent magnetic structure is difficult to be miniaturized, rigid structure, unable to get rid of the limitation of permanent magnetic materials, difficult to realize the truly sinusoidal distributed magnetic field and low electromagnetic utilization rate.