Wireless Power Transmitter Resonator Selection for Efficiency
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Solution Overview
Problem
Wireless power transmission efficiency is reduced due to varying distances between source and target resonators, leading to impedance mismatching and inefficient power transfer.
Innovation Solution
A method is introduced to detect and select the most suitable source resonating unit based on the power requirements and coupling factors of target devices, allowing for optimized power transmission by turning on or off resonating units and adjusting power transmission accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single source resonator is used for wireless power transmission, then the system structure is simple, but power transmission efficiency is reduced due to varying distances and impedance mismatching
Solution Approach 1:
The patent divides the source resonator into multiple source resonating units (first source resonating unit, second source resonating unit, etc.), each capable of independently transmitting power to target devices. This segmentation allows the system to select the most appropriate resonating unit based on coupling factors and power requirements, thereby improving power transmission efficiency while maintaining manageable system complexity through modular architecture.
2Loss of energy
If multiple source resonating units are deployed to improve power transmission efficiency, then power transmission efficiency is enhanced, but device complexity increases
Solution Approach 1:
The patent implements dynamic selection and control of source resonating units based on real-time coupling factors and power requirements of target devices. The system can dynamically turn on or off specific resonating units and adjust their operating states to match the needs of target devices, thereby improving power transmission efficiency while managing complexity through adaptive control rather than static configuration.
Solution Approach 2:
The patent changes operational parameters (coupling factor, power transmission level, resonating unit activation state) based on the specific requirements of target devices. By adjusting these parameters dynamically, the system optimizes power transmission efficiency for each scenario without requiring a permanently complex configuration of all resonating units to be active simultaneously.
3Loss of energy
If source resonating units are selected based on coupling factor, then power transmission efficiency is improved, but the control complexity increases
Solution Approach 1:
The patent employs feedback mechanisms where the system detects coupling factors between source resonating units and target devices, then uses this information to select the optimal source resonating unit for power transmission. This feedback-based selection process improves power transmission efficiency by matching the right resonating unit to the target device based on real-time coupling conditions, while the automated feedback loop manages control complexity systematically.
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
This approach enhances the efficiency of wireless power transmission by ensuring that power is transmitted through the resonating unit with the highest coupling factor or largest power transmission capability, thereby improving overall system efficiency and adaptability to varying device loads.
Implementation Method 1
A magnetic coupling or resonance coupling may be formed between the source resonator and the target resonator
Implementation Method 2
Wireless power refers to type of energy that is transferred from a wireless power transmitter to a wireless power receiver
Data Source
AI summary
A wireless power transmission system, and a method for controlling wireless power transmission and wireless power reception are provided. According to an aspect, a method for controlling a wireless power transmission may include: detecting a plurality of target devices used to wirelessly receive power; selecting a source resonating unit from among a plurality of source resonating units, based on the amount of power to be transmitted to one or more of the plurality of target devices, a coupling factor associated with one or more of the plurality of target devices, or both; and wirelessly transmitting power to a target device using the selected source resonating unit.