Wireless Power Supply Inverter Voltage Control
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Solution Overview
Problem
Existing wireless power-supplying devices face issues with element damage due to characteristic variations in production lots and temperature changes, as well as changes in induction caused by magnetic flux shielding materials, leading to unexpected voltages and potential damage.
Innovation Solution
A power-supplying device with an inverter circuit, resonance circuit, and switching control unit that adjusts switching signal parameters to maintain inter-terminal voltages within predetermined limits, preventing element damage by controlling the voltage converter or inverter circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If characteristic variations in production lots and temperature changes occur, then circuit characteristics change, but element damage may occur due to unexpected voltages
Solution Approach 1:
The switching control unit continuously monitors circuit characteristics and adjusts switching signal parameters based on feedback about actual operating conditions, including temperature variations and production lot differences, to maintain voltages within safe limits and prevent element damage
Solution Approach 2:
The system dynamically changes switching signal parameters (such as duty cycle, frequency, or phase) to compensate for characteristic variations in production lots and temperature changes, ensuring that inter-terminal voltages remain within predetermined safe limits despite environmental or manufacturing variations
2Adaptability or versatility
If magnetic flux shielding materials are arranged around installation place, then induction of resonance coil changes, but unexpected voltage may be applied to elements
Solution Approach 1:
The switching control unit detects changes in resonance coil induction caused by magnetic flux shielding materials and adjusts switching signal parameters accordingly, using feedback about actual induction levels to prevent unexpected voltages from damaging elements
Solution Approach 2:
The system dynamically adapts switching signal parameters in response to changes in magnetic flux shielding material configuration, allowing the power supply device to maintain safe operating voltages across different installation environments with varying magnetic shielding 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
Prevents element damage by ensuring inter-terminal voltages do not exceed safe limits, thereby protecting the device from voltage-related issues.
Implementation Method 1
a resonance circuit connected to the inverter circuit and configured to transfer alternating current power to a power-receiving device in a wireless manner
Implementation Method 2
an inverter circuit; a resonance circuit connected to the inverter circuit and configured to transfer alternating current power
Data Source
AI summary
A power-supplying device including an inverter circuit, a resonance circuit connected to the inverter circuit and configured to transfer alternating current power to a power-receiving device in a wireless manner, and a switching control unit that adjusts a parameter of respective switching signals that control ON and OFF of respective switching elements constituting the inverter circuit so that an inter-terminal voltage of a specific element constituting the inverter circuit or the resonance circuit does not exceed a predetermined limit value.