Wireless Power Supply Voltage Control Under Source Overload
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Solution Overview
Problem
The increase in the number of power receiving apparatuses in a wireless power supply system can lead to output power exceeding the rated capacity of the power source, causing a stoppage of power transmission to all apparatuses.
Innovation Solution
A wireless power supply system with a power source voltage controller that performs primary-side power reduction control to lower the output voltage when the output power exceeds the rated capacity, ensuring that the power transmission continues to all receiving apparatuses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple power receiving apparatuses are connected to receive power simultaneously, then the power supply capacity is improved, but the output power may exceed the rated capacity of the power source causing complete stoppage of power transmission
Solution Approach 1:
The power source voltage controller dynamically adjusts the output voltage of the AC power source apparatus based on real-time monitoring of output power. When the output power approaches the rated capacity, the controller automatically reduces the voltage to prevent overload, enabling the system to adaptively manage multiple power receiving apparatuses without complete stoppage
Solution Approach 2:
The system implements a feedback mechanism where the power source voltage controller continuously monitors the output power of the AC power source apparatus and adjusts the voltage accordingly. This closed-loop control ensures that the power transmission remains within safe operating limits while maximizing the number of serving apparatuses
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 prevents the complete shutdown of power transmission by adjusting the output voltage to maintain power supply within allowable limits, thereby avoiding the stoppage of power transmission to all receiving apparatuses.
Implementation Method 1
a secondary-side coil for magnetic coupling with the primary-side coil
Implementation Method 2
a primary-side resonant circuit including a primary-side coil and a primary-side capacitor; a secondary-side resonant circuit including a secondary-side coil for magnetic coupling with the primary-side coil and a secondary-side capacitor
Data Source
AI summary
A wireless power supply system includes: an AC power source apparatus; a plurality of power transmission apparatuses connected in parallel to the AC power source apparatus; a power receiving apparatus configured to be supplied with power from the power transmission apparatuses in a wireless manner; and a power source voltage controller configured to control an output voltage of the AC power source apparatus, in which in a case where an output power of the AC power source apparatus exceeds a rated output power, the power source voltage controller is configured to perform a primary-side power reduction control to lower the output voltage so that the output power falls below a preset allowable output power.