Wireless Power Transfer Dynamic Tuning for Disturbance Compensation
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Solution Overview
Problem
Wireless power transfer systems face disturbances due to varying coil distance, external or internal temperatures, and altered impedances, which affect power transfer efficiency and stability.
Innovation Solution
A system with sensors to detect disturbances and a dynamic tuning controller that adjusts operating frequency, input supply voltage, capacitance, inductance, and magnetic materials to optimize wireless power transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If wireless power transfer system operates with fixed parameters, then system design is simple, but power transfer efficiency deteriorates under environmental disturbances
Solution Approach 1:
The patent implements dynamic tuning of the wireless power transfer system by adjusting resonant frequency and impedance parameters in real-time based on detected environmental disturbances. The system transitions from fixed parameters to dynamically adjustable parameters, allowing the transmitter and receiver coils to maintain optimal coupling conditions despite changes in coil distance, temperature, or impedance variations.
Solution Approach 2:
The patent employs a feedback mechanism where sensors detect disturbances in the wireless power transfer system (such as coil distance changes, temperature variations, and impedance alterations), and this information is used to adjust system parameters accordingly. The feedback loop enables the system to counteract disturbances and maintain optimal power transfer efficiency.
2Adaptability or versatility
If system parameters are dynamically adjusted, then adaptability to environmental changes improves, but device complexity increases
Solution Approach 1:
The system implements dynamic adjustment of resonant frequency and impedance through variable capacitors and inductors, allowing the wireless power transfer system to adapt to changing environmental conditions such as temperature variations and coil distance changes while maintaining optimal power transfer conditions.
Solution Approach 2:
Sensors detect environmental disturbances including coil distance, temperature, and impedance changes, feeding this information to a control system that adjusts system parameters in real-time to maintain optimal power transfer despite environmental variations.
Solution Approach 3:
The patent changes physical parameters of the system including resonant frequency, capacitance, and inductance values to optimize power transfer under different operating conditions. By adjusting these parameters dynamically, the system adapts to environmental disturbances without requiring complete system redesign.
3Ease of operation
If operating frequency is optimized for general use, then ease of operation is maintained, but power transfer characteristics deteriorate under varying conditions
Solution Approach 1:
The system maintains ease of operation by automatically adjusting the operating frequency and impedance parameters without user intervention. The dynamic tuning occurs transparently to the user, who simply needs to place the receiver coil near the transmitter, while the system handles the optimization of power transfer characteristics internally.
Solution Approach 2:
The feedback system continuously monitors power transfer efficiency and adjusts operating parameters automatically, maintaining optimal performance without requiring user knowledge or intervention. This preserves ease of operation while significantly improving power transfer characteristics under varying conditions.
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 system dynamically adjusts to maintain optimal coupling and power transfer despite environmental changes, ensuring efficient and stable wireless power delivery.
Implementation Method 1
inductive wireless power transfer, which occurs when magnetic fields created by a transmitting element induce an electric field, and hence, an electric current, in a receiving element
Implementation Method 2
The operating frequency may be selected for a variety of reasons, such as, but not limited to, power transfer characteristics, power level characteristics, self-resonant frequency restraints
Data Source
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AI summary
A system for wireless power transfer includes a wireless transmission system, a wireless receiver system, and a dynamic tuning controller. The wireless transmission system configures an electrical energy signal, using the power from the input power source, for transmission by a transmission antenna. The wireless receiver system is operatively associated with a load and is configured to receive the electrical energy signal from the wireless transmission system, via coupling of the transmission antenna and receiver antenna, and configure the electrical energy signal to transfer power to the load. The dynamic tuning controller is configured to determine an output of the system and determine existence of disturbances to the system, based on the output, control alterations to one or more forward gain elements of one or more of the wireless transmission system, the wireless receiver system, and combinations thereof, if one or more disturbances exist, based on the output.