Resonant Wireless Power Circuit for Stable Voltage Under Dynamic Loads
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power transmission systems for customer premise equipment (CPE) face challenges in maintaining stable output voltage due to slow response times in loop control, leading to system power-off issues when the load dynamically changes.
Innovation Solution
The implementation of a wireless power transmission system using series resonant circuits with a DC/AC inverter circuit, a resonant inductor, and a capacitor at the transmitter, and an AC/DC rectifier circuit, resonant inductor, and capacitor at the receiver, where the inductance and capacitance values are calculated to ensure a constant voltage operating frequency, independent of the load, through electromagnetic induction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If loop control is used to maintain stable output voltage, then output voltage stability is improved, but response time becomes slow causing system power-off when load dynamically changes
Solution Approach 1:
The patent applies dynamics by making the operating frequency adjustable rather than fixed. The frequency tuning module dynamically adjusts the operating frequency of the resonant circuit based on load changes, enabling the system to adapt quickly to dynamic conditions while maintaining stable voltage output, thus resolving the contradiction between stability and response speed
Solution Approach 2:
The patent changes the operating frequency parameter of the resonant circuit to optimize system performance. By adjusting the frequency parameter in response to load variations, the system achieves both fast response and stable voltage output, overcoming the limitation of slow loop control response
2Device complexity
If wireless power transmission is implemented without wired connection, then installation complexity is reduced, but maintaining stable power transmission becomes challenging
Solution Approach 1:
The patent uses dynamic frequency adjustment to maintain stable wireless power transmission. The frequency tuning module continuously optimizes the operating frequency based on transmission conditions, ensuring stable power delivery without requiring complex wired connections, thus achieving both simplified installation and stable transmission
Solution Approach 2:
The patent utilizes resonant vibration principles in the wireless power transmission system. By operating at resonant frequencies and dynamically tuning these frequencies, the system achieves efficient and stable wireless power transfer, maintaining stability without the need for complex wired infrastructure
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
This solution provides a stable voltage output that is unaffected by changes in the receiver's load, ensuring a dynamic response and preventing system power-off, by maintaining a constant voltage operating frequency through precise calculation and adjustment of inductance and capacitance values.
Implementation Method 1
power at the transmitter is transmitted to the receiver through electromagnetic induction between the first resonant inductor and the second resonant inductor
Implementation Method 2
series resonant circuits with a DC/AC inverter circuit, a resonant inductor, and a capacitor at the transmitter, and an AC/DC rectifier circuit, resonant inductor, and capacitor at the receiver, where the inductance and capacitance values are calculated to ensure a constant voltage operating frequency
Data Source
AI summary
This application provides a wireless power transmission system. The system includes a transmitter and a receiver, where the transmitter includes a DC/AC inverter circuit, a first resonant inductor, a first capacitor, and a first compensation inductor that are connected in series; and the receiver includes an AC/DC rectifier circuit, a second resonant inductor, a second capacitor, and a second compensation inductor that are connected in series; and power at the transmitter is transmitted to the receiver through electromagnetic induction between the first resonant inductor and the second resonant inductor, and the AC/DC rectifier circuit is configured to provide the rectified power to a load of the receiver. This solution is applicable to a wireless power supply scenario or a wireless charging scenario.