Wireless Power Supply Adaptive Frequency Control
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Solution Overview
Problem
Existing wireless power supplying systems face instability due to mismatches in resonance frequencies between the transmitting and receiving coils, leading to unstable electromagnetic coupling and power output.
Innovation Solution
An adaptive adjustment method that detects the operating status of the wireless power transmitting unit and adjusts the master frequency to ensure it aligns with the resonance frequencies of both the transmitting and receiving coils, maintaining the current within a normal operating range to stabilize power output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the master frequency is fixed without adjustment, then the system structure is simple, but the resonance frequency mismatch causes unstable power output
Solution Approach 1:
The patent implements a feedback mechanism where the system detects the actual resonance frequencies of transmitting and receiving coils, compares them with the master frequency, and automatically adjusts the master frequency to maintain alignment. This closed-loop control ensures stable power output while adapting to frequency drift caused by environmental factors and component variations.
Solution Approach 2:
The patent transforms the static master frequency into a dynamic parameter that can be automatically adjusted based on real-time detection of coil resonance frequencies. The system continuously monitors and adapts the master frequency to maintain optimal electromagnetic coupling, resolving the contradiction between simplicity and stability.
2Reliability
If the resonance frequencies of transmitting and receiving coils are not aligned, then the system can operate with fixed components, but deep electromagnetic coupling cannot be achieved
Solution Approach 1:
The system uses feedback control to detect the resonance frequencies of both transmitting and receiving coils, compare them with the master frequency, and automatically adjust the master frequency to achieve alignment. This ensures deep electromagnetic coupling is maintained despite variations in coil characteristics or environmental conditions.
Solution Approach 2:
The patent changes the master frequency parameter dynamically to match the resonance frequencies of the coils. By adjusting this key parameter based on detected conditions, the system achieves and maintains optimal electromagnetic coupling without requiring physical modifications to the coil structures.
3Reliability
If the master frequency drifts from resonance frequencies, then the system operates with fixed parameters, but the power output becomes unstable
Solution Approach 1:
The patent implements automatic frequency adjustment through feedback control. The system continuously detects the resonance frequencies, compares them with the current master frequency, and automatically adjusts the master frequency to maintain alignment. This automation ensures stable power output without manual intervention, resolving the contradiction between reliability and automation extent.
Solution Approach 2:
The system performs self-adjustment of the master frequency based on its own detection of resonance frequency mismatches. The wireless power supply system automatically corrects its own frequency drift without external control, maintaining stable operation through self-service frequency alignment.
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
The method ensures stable power output by maintaining the master frequency close to the resonance frequencies of both coils, enabling deep electromagnetic coupling and normal operation of the wireless power supplying system.
Implementation Method 1
the oscillating circuit 113 is used to generate a frequency signal, the control circuit 112 is electrically connected to the oscillating circuit 113 to control a master frequency f0 of the frequency signal generated by the oscillating circuit 113, and the transmitting coil 114 generates a resonance frequency f1 based on the master frequency f0 of the frequency signal
Implementation Method 2
The receiving coil 121 of the electric power receiving unit 120 is electromagnetically coupled to the transmitting coil 114 to receive the electric power outputted by the electric power transmitting unit 110
Data Source
AI summary
It is disclosed a wireless power supplying system and an self adaptive adjustment method thereof. The method includes: a step for detecting an operating status of an electric power sending unit and determining, based on the detected operating status, whether the electric power transmitting unit satisfies a condition of a normal operation of the system and a step for determining, based on the above determination result, whether to adjust a master frequency of an oscillating circuit so that the master frequency of the oscillating circuit is between a resonance frequency of a transmitting coil and a resonance frequency of a receiving coil. The master frequency of the oscillating circuit is adjusted automatically, so that the master frequency is always close to the resonance frequency of the transmitting coil and that of the receiving coil, thereby maintaining stably the power output of the system.