Tunable Wireless Power Architectures for Dynamic Coupling
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Solution Overview
Problem
Existing wireless energy transfer systems face challenges in maintaining efficient and constant energy delivery due to changes in positioning, coupling, and orientation of system components, leading to fluctuations in power delivery.
Innovation Solution
The implementation of tunable wireless energy transfer systems using coupled resonators with adjustable components such as inductors and capacitors, along with impedance matching networks, to maintain efficient energy transfer despite changes in system configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If fixed resonator parameters are used in wireless energy transfer systems, then system simplicity is maintained, but energy transfer efficiency fluctuates due to changes in positioning and coupling
Solution Approach 1:
The patent implements dynamic tuning of resonator parameters (inductance and capacitance values) to adapt to changing coupling conditions between source and device. This allows the system to maintain optimal resonant frequency matching despite variations in positioning, distance, or orientation, thereby resolving the contradiction between maintaining simple fixed parameters and achieving consistent high efficiency.
Solution Approach 2:
The system changes physical parameters of the resonators (inductance L and capacitance C) dynamically to optimize energy transfer. By adjusting these parameters based on detected coupling conditions, the system maintains resonant frequency alignment and maximizes transfer efficiency without requiring complex mechanical reconfiguration.
2Stability of the object's composition
If resonator parameters are dynamically adjusted to maintain constant power delivery, then power stability is improved, but system complexity increases due to additional control mechanisms
Solution Approach 1:
The patent employs feedback mechanisms where the system detects changes in coupling conditions (such as variations in mutual inductance or resonant frequency mismatch) and automatically adjusts resonator parameters in response. This closed-loop control maintains stable power delivery to the load despite external disturbances, resolving the contradiction between power stability and control complexity.
Solution Approach 2:
The system performs self-adjustment of resonator parameters without requiring external intervention. The control mechanism automatically detects deviations from optimal operating conditions and adjusts inductance or capacitance values to restore resonance, enabling the system to maintain stable power delivery through self-correcting behavior.
3Loss of energy
If fixed impedance matching is used, then device simplicity is maintained, but power delivery efficiency decreases when coupling conditions change
Solution Approach 1:
The patent implements dynamic impedance matching by adjusting the resonator parameters (inductance and capacitance) to maintain optimal impedance correspondence between source and device as coupling conditions change. This dynamic adaptation ensures maximum power transfer efficiency across varying operating conditions without requiring complex external matching networks.
Solution Approach 2:
The system changes the electrical parameters of the resonators to optimize impedance matching dynamically. By adjusting inductance and capacitance values based on real-time coupling conditions, the system maintains efficient power transfer despite variations in distance, orientation, or load characteristics.
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 stable and efficient wireless energy transfer over varying distances and orientations by dynamically adjusting resonator parameters to optimize coupling and power delivery.
Implementation Method 1
power may be exchanged wirelessly between at least two resonators
Implementation Method 2
coupled resonators
Data Source
AI summary
Described herein are improved configurations for a wireless power transfer. The parameters of components of the wireless energy transfer system are adjusted to control the power delivered to the load at the device. The power output of the source amplifier is controlled to maintain a substantially 50% duty cycle at the rectifier of the device.