Wireless Power Measurement Circuit Using Capacitive Coupling Simulation
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Solution Overview
Problem
Current wireless power transmission systems using electric field coupling require complex and cumbersome measurement setups for characterizing power transmission and reception modules, involving physical connections and arrangements that complicate the measurement process.
Innovation Solution
A measurement circuit and apparatus that simulate the electric field coupling state between power transmission and reception modules using a series capacitor and additional capacitors, allowing for precise characterization without the need for actual physical arrangement, enabling direct connection and measurement of electrical characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If actual physical arrangement of power transmission and reception modules is used for measurement, then measurement accuracy is improved, but device complexity and measurement setup complexity increase
Solution Approach 1:
The patent uses a measurement circuit that copies or simulates the electrical characteristics of the actual wireless power transmission system. The circuit includes components that replicate the impedance and coupling behavior of the real system, allowing accurate measurements without requiring the actual physical arrangement of power transmission and reception modules.
Solution Approach 2:
The measurement circuit acts as an intermediary between the measurement instrument and the power transmission module. It provides a simplified interface that translates complex wireless power transmission characteristics into measurable electrical signals, eliminating the need for direct physical coupling measurements.
2Measurement precision
If actual physical arrangement of modules is used for measurement, then measurement accuracy is improved, but ease of operation deteriorates due to cumbersome setup
Solution Approach 1:
The measurement circuit creates a simplified copy of the power transmission module's electrical characteristics. This allows operators to perform measurements using standard electrical connection methods rather than complex physical positioning and alignment procedures required by actual wireless power transmission systems.
3Measurement precision
If actual physical arrangement is used for measurement, then capacitive coupling state is accurately measured, but measurement time and productivity decrease
Solution Approach 1:
The measurement circuit replicates the capacitive coupling behavior in a simplified electrical configuration. This allows rapid measurement of coupling characteristics without the time-consuming process of physically positioning and aligning power transmission and reception modules.
Solution Approach 2:
The measurement circuit is pre-configured with components that simulate the capacitive coupling characteristics. This preliminary setup eliminates the need for real-time physical arrangement during measurement, significantly reducing measurement time while maintaining accuracy.
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 easy and precise characterization of power transmission and reception modules, reducing measurement complexity and workload while accurately reproducing the capacitive coupling state, facilitating the development of compact and efficient measurement apparatuses.
Implementation Method 1
a series capacitor connected between the first power-transmission-side terminal and the first power-reception-side terminal and simulating a coupling state between the power transmission apparatus and the power reception apparatus
Data Source
AI summary
A measurement apparatus includes a pseudo-coupling circuit, a power reception circuit, and a characteristics measuring unit. The pseudo-coupling circuit includes a first power-transmission-side terminal, a second power-transmission-side terminal, a first power-reception-side terminal, and a second power-reception-side terminal. A capacitor is connected between the first power-transmission-side terminal and the first power-reception-side terminal. A capacitor is connected between the first power-transmission-side terminal and the second power-transmission-side terminal. A capacitor is connected between the first power-reception-side terminal and the second power-reception-side terminal. A power transmission module to be measured is connected to the first and second power-transmission-side terminals. The power reception circuit and the characteristics measuring unit are connected to the first and second power-reception-side terminals.