3D Platform for Coupling Coefficient Evaluation of an Inductive Power Transfer Systems.

Area of Science:

• Electrical Engineering
• Electromagnetics
• Wireless Power Transfer

Background:

• Inductive Wireless Power Transfer (IPT) systems require precise characterization of the coupling coefficient for optimal performance.
• Accurate measurement of mutual inductance between transmitter and receiver coils is crucial for system design and efficiency.

Purpose of the Study:

• To present a novel, computer-controlled 3D platform for evaluating the coupling coefficient in IPT systems.
• To enable precise spatial mapping of the coupling coefficient between transmitter and receiver coils.

Main Methods:

• Development of a custom 3D positioning mechanism integrated with a computer application.
• Implementation of an inductance measurement circuit to quantify mutual inductance at various spatial positions.
• Data acquisition and visualization on a connected computer for detailed analysis.

Main Results:

• The platform successfully measures mutual inductance and calculates the coupling coefficient in 3D space.
• Demonstrated ability to evaluate coupling coefficients at multiple spatial points, providing a comprehensive spatial map.
• Data collected can be used to extrapolate polynomial functions relating coupling coefficient to coil distance and misalignment.

Conclusions:

• The developed 3D platform is an effective tool for the design and evaluation phases of inductive wireless power transfer systems.
• This system facilitates a deeper understanding of coil coupling dynamics, enabling performance optimization.
• The ability to map and model coupling coefficients aids in predicting system behavior under varying spatial configurations.