Meander-Shaped Inductive Energy Transfer for Rotational Positioning
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Solution Overview
Problem
Existing devices for inductively transferring electrical energy to sensors and actuators on a fastening element, such as a rod, are limited by their point-to-point system design, which restricts continuous and rotational positioning, requiring multiple power units and preventing simultaneous energy supply to multiple recipients.
Innovation Solution
A device featuring meander-shaped windings on both the primary and secondary sides with overlapping and offset configurations, accompanied by compensation and rectifier circuits, allows for flexible positioning and constant energy transfer to multiple recipients, enabling continuous and rotational movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a point-to-point inductive energy transfer system is used, then energy can be transferred to a single recipient, but continuous positioning and rotational movement of multiple recipients are restricted
Solution Approach 1:
The secondary winding is divided into multiple meander-shaped windings arranged offset to one another along the carrier. Each meander-shaped winding can independently couple with the primary winding at different positions, enabling multiple recipients to be positioned freely along the carrier while maintaining inductive coupling without requiring multiple separate power units
Solution Approach 2:
The meander-shaped windings are arranged in a linear sequence along the carrier rather than being positioned at discrete points. This transforms the system from point-to-point coupling to a continuous linear arrangement, enabling continuous positioning and rotational movement of recipients along the carrier length
2Productivity
If multiple power electronic units are provided on the primary side for each recipient, then each recipient can be supplied with energy, but the system complexity and cost increase
Solution Approach 1:
A single primary winding serves multiple secondary meander-shaped windings simultaneously. The primary winding generates a magnetic field that can inductively couple with any or all of the offset meander-shaped windings along the carrier, allowing one power unit to supply energy to multiple recipients at different positions and orientations
Solution Approach 2:
Multiple secondary windings are merged into a single system architecture with one primary winding. The offset meander-shaped windings share the same primary field source, combining multiple energy transfer paths into a unified system that reduces the total number of power electronic units required
3Adaptability or versatility
If conventional windings are used, then rotational degree of freedom is limited, but free positioning and rotation of sensors and actuators is required
Solution Approach 1:
The meander-shaped winding geometry provides dynamic coupling capability that adapts to different rotational positions. As a recipient rotates or moves along the carrier, the magnetic field coupling between the primary winding and the extended meander-shaped secondary windings maintains sufficient inductive coupling to ensure stable energy transfer throughout the range of motion
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
Enables reliable and constant energy supply to multiple sensors and actuators positioned freely on a fastening element, maintaining energy transfer efficiency across various orientations and positions.
Implementation Method 1
a device for inductively transferring electrical energy and/or data with at least one meander-shaped winding (120) on the secondary side and at least one meander-shaped winding (100) on the primary side
Implementation Method 2
the transfer of the energy can be implemented as a point-to-point system. With such a transfer as a point-to-point system, one power electronic unit must be provided on the primary side per recipient on the secondary side
Data Source
AI summary
A device for inductively transferring electrical energy and/or data from a primary-sided carrier to at least one secondary-sided recipient which can be positioned on the carrier has a meander-shaped winding on the primary side and at least one meander-shaped winding on the secondary side.