Multi-Timescale Rectifier Feedback for Stable Wireless Power
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Solution Overview
Problem
Existing wireless power transfer systems lack dynamic feedback controls that can effectively manage power transfer over multiple time-scales, leading to inefficiencies and instability in power delivery to receivers.
Innovation Solution
A tunable multi-timescale wireless rectification system is introduced, which includes a plurality of antennas, rectifying devices, impedance-matching components, and DC-to-DC converters. This system employs antenna and impedance feedback controls that operate on fast timescales to optimize power transfer, while rectification and DC feedback controls operate on slower timescales to stabilize power delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing wireless power transfer systems use simple power delivery without multi-timescale feedback controls, then the device complexity is reduced, but power transfer efficiency and stability deteriorate
Solution Approach 1:
The feedback control system is segmented into multiple independent controllers operating at different timescales: fast-timescale controllers (antenna and impedance feedback) and slow-timescale controllers (rectification and DC feedback). Each controller handles specific aspects of power transfer optimization, allowing the system to achieve high stability without requiring a single complex monolithic controller. This segmentation enables parallel operation of simpler controllers rather than one complex sequential controller.
Solution Approach 2:
The system implements dynamic feedback controls that adapt to changing operating conditions by operating at multiple timescales. Fast-timescale controllers respond immediately to rapid changes in antenna and impedance characteristics, while slow-timescale controllers adjust rectification and DC parameters in response to gradual changes. This dynamic multi-timescale approach allows the system to maintain optimal performance across varying conditions without requiring excessive complexity in any single control mechanism.
2Productivity
If dynamic feedback controls are implemented to optimize power transfer, then power transfer efficiency is improved, but the device complexity increases
Solution Approach 1:
The feedback control functionality is divided into separate modular controllers: antenna feedback controller, impedance feedback controller, rectification feedback controller, and DC feedback controller. Each module handles a specific aspect of power transfer optimization independently, making the overall complex function manageable through simpler, specialized components that can be implemented and tuned separately.
Solution Approach 2:
The system implements multiple feedback loops operating at different timescales to continuously monitor and adjust power transfer parameters. Fast feedback loops monitor antenna and impedance characteristics for immediate adjustments, while slow feedback loops monitor rectification and DC output for gradual optimization. This multi-layered feedback approach enables high efficiency by continuously adapting to changing conditions without requiring any single feedback mechanism to be overly complex.
3Speed
If fast-timescale feedback controls are used for antenna and impedance optimization, then response speed is improved, but the control system complexity increases
Solution Approach 1:
The control system is segmented into fast-timescale controllers (antenna and impedance feedback) that operate independently from slow-timescale controllers. The fast controllers focus exclusively on rapid response requirements for antenna and impedance optimization, using simplified control logic tailored to their specific functions rather than attempting to handle all control aspects in a single complex system.
Solution Approach 2:
The system implements dynamic control where antenna and impedance parameters are adjusted in real-time at fast timescales in response to immediate changes in operating conditions. This dynamic adjustment capability allows the system to respond rapidly to changing conditions without requiring the entire control system to be maximally complex, as only the relevant fast-timescale controllers are actively engaged for each specific response.
4Stability of the object's composition
If rectification and DC feedback controls operate on slower timescales, then system stability is improved, but the adaptability to rapid changes deteriorates
Solution Approach 1:
The feedback control system is segmented into different timescale layers: slow-timescale controllers (rectification and DC feedback) provide stable baseline operation, while fast-timescale controllers (antenna and impedance feedback) provide rapid adaptation capability. This segmentation allows each controller layer to specialize in its appropriate timescale without compromising the other, achieving both stability and adaptability through coordinated operation of simpler specialized controllers.
Solution Approach 2:
The system implements a dynamic multi-timescale control architecture where rectification and DC feedback operate on slower timescales to maintain stable power delivery and prevent oscillations, while antenna and impedance feedback operate on faster timescales to adapt rapidly to changing conditions. This dynamic arrangement allows the system to exhibit both stability (through slow-timescale control) and adaptability (through fast-timescale control) simultaneously, with each timescale layer handling the temporal characteristics appropriate to its function.
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 achieves optimized power transfer efficiency and stability by dynamically adjusting antenna and impedance characteristics, as well as rectification and DC power conversion, across multiple time-scales, ensuring reliable power delivery to a wide range of devices.
Implementation Method 1
an array of antennas receives electromagnetic radiation (EMR) and converts the received EMR to an alternating current (AC) power
Implementation Method 2
a plurality of rectifying devices converts the AC power to a direct current (DC) power
Data Source
Figure 1A
Figure 1B
Figure 1C~1D
AI summary
Systems and methods are provided for various tunable multi-timescale wireless rectification systems. Tunable multi-timescale wireless rectification systems may include multiple feedback control loops, systems, or sub-systems that modify characteristics of components of a wireless rectification system on various timescales. A wireless rectification system may include antennas, impedance-matching components, rectifying devices, DC-to-DC converters, and/or load controllers. Two or more feedback controls may function on different timescales to modify one or more characteristics or functionalities of components of the wireless rectification system in response to monitored AC and/or DC power values at various locations within the wireless rectification system. Feedback controls operating on various timescales may include antenna feedback controls, impedance feedback controls, rectifying feedback controls, and/or DC feedback controls.