Dynamic Rectifier Boost Switching for Weak Wireless Power Input
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Solution Overview
Problem
Wireless power transfer (WPT) devices often receive alternating current that is too weak or noisy, making it inefficient for charging communication devices like smartphones and tablets.
Innovation Solution
A WPT boost system that includes a switch network with multiple switches and a controller to modulate the rectified voltage, dynamically boosting the input voltage by adjusting the ON/OFF states of switches and using field effect transistors to enhance the rectified voltage for efficient charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional rectifier is used to convert wireless power input, then the alternating current is converted to rectified voltage, but the rectified voltage is too weak or noisy for efficient device operation and charging
Solution Approach 1:
The patent implements dynamic boosting by controlling switches to modulate the rectified voltage in real-time. The controller adjusts the ON/OFF states of switches based on the detected rectified voltage level, dynamically enhancing the voltage when it falls below a threshold and maintaining stability when sufficient, thereby resolving the contradiction between voltage level and quality
Solution Approach 2:
The system employs feedback control where the controller continuously monitors the rectified voltage signal and adjusts the switch control signals accordingly. This closed-loop feedback mechanism ensures that the rectified voltage maintains both sufficient level and quality by compensating for fluctuations and noise in real-time
2Productivity
If the rectified voltage is too weak, then wireless power transfer can occur, but the charging efficiency is insufficient for practical device operation
Solution Approach 1:
The system performs preliminary detection of the rectified voltage level and proactively activates the boosting function before the voltage becomes insufficient for charging. By anticipating the voltage drop and applying boost in advance, the system maintains charging efficiency throughout the power transfer process
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 effectively increases the rectified voltage, improving the efficiency of wireless charging and reducing noise, enabling stable operation and recharging of communication devices.
Implementation Method 1
the switch network is further configured to rectify the wireless power input and generate a rectified voltage
Implementation Method 2
transmit a signal input to at least one switch of the plurality of switches based on the rectified voltage signal to change an ON/OFF state of the at least one switch of the plurality of switches, wherein a resultant change of the ON/OFF state of the at least one switch modulates the rectified voltage
Implementation Method 3
another switch of the plurality of switches is a first field effect transistor electrically coupled to the first conductor and configured receive a wireless power input and output an output voltage back to the first conductor based upon the signal input
Data Source
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AI summary
A system for rectifying power is disclosed. The system includes a switch network that includes a plurality of switches configured to receive wireless power input and generate a rectified voltage. The system further includes a first conductor coupled to the first receiver and the switch network configured to transmit a first alternating current to the switch network. The system further includes a second conductor electrically coupled to the first receiver and the switch network, configured to transmit a second alternating current having a second voltage to the first receiver. The system further includes a controller configured to determine a rectified voltage signal and to transmit an input to at least one switch of the plurality of switches based on the rectified voltage signal to change an ON/OFF state of the at least one switch of the plurality of switches, modifying the voltage.