Wireless Power Transmitter Differential Signal Control
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Solution Overview
Problem
Resonance-type wireless power transmission systems face efficiency deterioration due to deviations in electronic components, limited switching speed, phase differences between transmitter and receiver resonators, and harmonic radiation, which affect power transmission efficiency.
Innovation Solution
An apparatus and method for controlling differential signals in a wireless power transmitter that includes a converter to generate differential signals, an amplifier to amplify these signals, a gauge to measure phase difference and amplitude, and a controller to adjust pulse width, ensuring optimal phase and amplitude matching between the transmitter and receiver resonators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If resonance-type wireless power transmission is used, then wireless power transfer is achieved, but transmission efficiency deteriorates due to phase difference between transmitter and receiver resonators
Solution Approach 1:
The patent implements a feedback mechanism where the gauge measures the actual phase difference and amplitude between differential signals, and the controller uses this measurement to adjust the pulse width and timing of differential signals. This closed-loop feedback system dynamically compensates for phase differences caused by component deviations and varying transmission distances, thereby improving power transmission efficiency and reducing energy loss.
Solution Approach 2:
The patent introduces dynamic adjustment capability by making the pulse width and signal timing variable rather than fixed. The controller dynamically modifies these parameters based on real-time measurements from the gauge, allowing the system to adapt to changing conditions such as phase differences and amplitude variations, thus optimizing transmission efficiency under different operating conditions.
2Ease of operation
If electronic components are used in the wireless power transmitter, then the system can operate, but transmission efficiency deteriorates due to component deviation and parasitic components
Solution Approach 1:
The gauge continuously measures the actual performance of electronic components including their deviations and parasitic effects. The controller uses this feedback information to compensate for component imperfections by adjusting signal parameters, thereby maintaining system operability while minimizing energy loss caused by component deviations.
Solution Approach 2:
The patent changes operating parameters such as pulse width, signal amplitude, and timing based on measured component characteristics. By adapting these parameters to match the actual component performance rather than ideal specifications, the system compensates for component deviations and parasitic effects, reducing energy loss while maintaining operability.
3Power
If differential signals are amplified to improve power transfer, then transmission efficiency improves, but harmonic radiation increases
Solution Approach 1:
The gauge measures the characteristics of amplified differential signals including any harmonic content. The controller uses this feedback to adjust the amplification parameters and signal timing to minimize harmonic generation while maintaining adequate power transfer capability, thus reducing harmful harmonic radiation.
Solution Approach 2:
The patent dynamically adjusts amplification parameters such as gain, bandwidth, and signal timing based on measured conditions. By optimizing these parameters, the system achieves adequate power transfer while minimizing the generation of harmonic radiation, balancing power capability with harmful factor reduction.
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 improves transmission efficiency and reduces harmonic radiation by adaptively controlling the differential signals, ensuring high efficiency and effective power transfer in resonance-type wireless power transmission systems.
Implementation Method 1
a converter configured to convert a single signal into differential signals
Implementation Method 2
an amplifier operably coupled to the converter and configured amplify power of the differential signals
Implementation Method 3
a gauge operably coupled to the amplifier and configured to measure a phase difference and amplitude between the amplified differential signals
Implementation Method 4
a controller for converting a pulse width of the differential signals by controlling the converter according to measurements by the gauge
Implementation Method 5
The resonance-type wireless power Tx may generate a magnetic field which vibrates at a specific resonance frequency in a transmission coil
Implementation Method 6
a magnetic induction scheme for wirelessly transmitting power by using a magnetic field induced from a coil
Implementation Method 7
The resonance-type wireless power Rx may charge a battery by intensively receiving the magnetic field which vibrates at the specific frequency through a reception coil
Implementation Method 8
a magnetic induction scheme for wirelessly transmitting power by using a magnetic field induced from a coil
Data Source
AI summary
Various embodiments of the present disclosure relate to an apparatus and method for controlling a differential signal of a wireless power transmitter. For example, an apparatus for controlling a differential signal of a wireless power transmitter may include a converter configured to convert a single signal into differential signals; an amplifier operably coupled to the converter and configured amplify power of the differential signals, thereby providing amplified differential signals; a gauge operably coupled to the amplifier and configured to measure a phase difference and amplitude between the amplified differential signals; and a controller for converting a pulse width of the differential signals by controlling the converter according to measurements by the gauge. Further, various embodiments of the present disclosure also include other embodiments other than the aforementioned embodiments.


