Wireless Power Receiver Regulator Dynamic Control
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Solution Overview
Problem
Conventional power receivers in wireless power transmission systems suffer from significant power losses due to regulator circuitry, which adversely affect the overall efficiency of power transfer from the transmitter to the load.
Innovation Solution
A power receiver with input circuitry that converts wireless power and a regulator that controls current and voltage reference signals to minimize power loss, including a controller that dynamically adjusts these signals to optimize power transfer and communicate with the transmitter to adjust transmit power levels based on load requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If regulator circuitry is used to meet system load requirements, then the power receiver can handle dynamic power loads, but significant power losses occur in the regulator
Solution Approach 1:
The patent implements a feedback control mechanism where the controller continuously monitors the rectified voltage level and adjusts the current reference signal and desired rectified voltage level accordingly. This closed-loop control optimizes the operating point of the regulator to minimize power losses while maintaining the ability to handle dynamic power loads, directly resolving the contradiction between adaptability and energy loss.
Solution Approach 2:
The system dynamically adjusts the current reference signal and desired rectified voltage level based on real-time conditions. By making the regulator's operating parameters variable rather than fixed, the system can adapt to changing load requirements while operating at optimal efficiency points, thereby reducing power losses without sacrificing adaptability.
2Reliability
If conventional regulator circuitry is used, then system load requirements are met, but overall efficiency of power transfer is adversely affected
Solution Approach 1:
The patent changes the operating parameters of the regulator by dynamically adjusting the current reference signal and desired rectified voltage level based on the rectified voltage level. This parameter optimization ensures the regulator operates at points that minimize power losses while still meeting system load requirements, thus improving overall efficiency without compromising reliability.
3Device complexity
If the regulator operates without dynamic control, then the circuit is simpler, but power loss cannot be optimized
Solution Approach 1:
The controller uses feedback from the rectified voltage level to dynamically adjust the current reference signal and desired rectified voltage level. This feedback mechanism enables power loss optimization through relatively simple additional circuitry, achieving a good balance between device complexity and energy efficiency.
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 solution significantly reduces power loss within the regulator, enhancing the efficiency of wireless power transfer by dynamically controlling current and voltage levels, thereby improving the overall efficiency of the system.
Implementation Method 1
a power transmitter and a power receiver that (i) picks up power transmitted wirelessly by the power transmitter
Implementation Method 2
input circuitry that converts wireless power transmitted wirelessly from a power transmitter into an input signal
Data Source
AI summary
A power receiver for a wireless power transmission system that includes a power transmitter has input circuitry that converts power received from the power transmitter into an input signal. A regulator regulates the input signal to generate a regulated output signal based on a current reference signal and a voltage reference signal, and a load receives the regulated output signal. The regulator controls at least one of the current reference signal and the voltage reference signal to control power loss within the regulator. In one embodiment, the regulator globally controls the voltage of the rectified input signal and locally controls the current reference signal to limit power loss in the regulator as well as meet system load requirements.