Wireless Power Harmonic Generator and Filter for Interference Reduction
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Solution Overview
Problem
Wireless power transmission systems face interference and inefficiency due to unwanted harmonics, which can affect neighboring electronic devices and reduce transmission efficiency.
Innovation Solution
The implementation of a wireless power transmission and reception apparatus that utilizes a harmonic generator to create harmonics, a filter to select and attenuate unwanted harmonics, and a harmonic transmission coil to adjust the phase of these harmonics, thereby reducing electromagnetic interference and maintaining transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless power transmission is performed using electromagnetic induction, then power can be transmitted wirelessly to various devices, but unwanted harmonics are generated that cause electromagnetic interference with neighboring electronic devices and reduce transmission efficiency
Solution Approach 1:
The patent generates unwanted harmonics through a harmonic generator and then uses these same harmonics to create canceling electromagnetic signals. By converting the harmful harmonic byproducts into useful canceling signals, the system eliminates electromagnetic interference while maintaining wireless power transmission functionality
Solution Approach 2:
The system proactively generates canceling electromagnetic signals before the harmful harmonics can cause interference. The harmonic transmission coil transmits phase-inverted harmonic signals that preemptively counteract the unwanted harmonics, preventing electromagnetic interference before it affects neighboring devices
2Power
If high-output energy transmission is performed, then more power can be delivered to receiving devices, but electromagnetic interference and transmission inefficiency increase due to unwanted harmonics
Solution Approach 1:
The patent converts the energy wasted in harmful harmonics into useful canceling signals. The harmonic generator creates unwanted harmonics from high-power transmission, and these same harmonics are phase-inverted and transmitted back to cancel interference, thereby recovering energy that would otherwise be lost and improving overall transmission efficiency
3Productivity
If unwanted harmonics are generated during power transmission, then the transmission process can proceed, but neighboring electronic devices and other portions of the device experience interference, malfunctions, and damage
Solution Approach 1:
The system generates phase-inverted harmonic signals that preemptively counteract unwanted harmonics before they can cause interference or damage. The harmonic transmission coil transmits these canceling signals simultaneously with the power transmission, preventing malfunctions and damage to electronic devices while maintaining normal operation
Solution Approach 2:
The system uses the unwanted harmonics generated during power transmission as feedback to create canceling signals. The harmonic generator captures the harmonic content from the transmission process and uses it to generate phase-inverted signals, creating a closed-loop system that continuously compensates for interference and protects device reliability
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 solution effectively attenuates unwanted harmonics, reducing interference with neighboring devices and maintaining transmission efficiency, even during high-output energy transmission.
Implementation Method 1
a transmission coil configured to transmit the transferred power through electromagnetic induction with the wireless power reception apparatus
Implementation Method 2
a reception coil configured to receive power by a harmonic with an n*f0 frequency that is generated through electromagnetic induction with the wireless power transmission apparatus
Data Source
AI summary
Provided is a wireless power reception apparatus for wirelessly receiving power from a wireless power transmission apparatus, the wireless power reception apparatus including a reception coil configured to receive power by a harmonic with an n*f0 frequency that is generated through electromagnetic induction with the wireless power transmission apparatus; a matching circuit configured to transfer the harmonic with the n*f0 frequency to a harmonic generator; the harmonic generator configured to generate at least one harmonic with an m*n*f0 frequency by applying a multiplication factor m to the transferred harmonic with the n*f0 frequency; a filter configured to filter the harmonic with the m*n*f0 frequency; and a harmonic transmission coil configured to transmit the filtered harmonic with the m*n*f0 frequency to the wireless power transmission apparatus, and to attenuate the harmonic with the n*f0 frequency that is generated from the wireless power transmission apparatus.