Wireless Power Transfer Voltage Regulation for Misalignment Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power transfer systems experience significant voltage swings and inefficiencies due to misalignment between wireless receivers and transmitters, particularly in movable applications, leading to thermal issues and uneven power distribution.
Innovation Solution
Implementing multiple voltage regulators connected to each wireless receiver, with optional balancing resistors, to regulate output voltage and enable simultaneous power contribution from multiple transmitters, ensuring stable power delivery regardless of alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple wireless transmitters are used to supply power to movable receivers, then power availability is improved, but voltage swings and thermal issues worsen due to misalignment
Solution Approach 1:
The system segments the power reception function by providing multiple independent wireless receivers, each with its own voltage regulator. This segmentation allows each receiver-transmitter pair to operate independently, preventing voltage swings from one pair from affecting others, thus maintaining stable power delivery even when transmitters and receivers are in movable relative positions
Solution Approach 2:
The patent employs voltage regulators that dynamically adjust operating parameters to compensate for misalignment between transmitters and receivers. By changing voltage regulation parameters in real-time, the system maintains stable output voltage despite variations in alignment, thereby resolving the contradiction between power availability and voltage stability
2Adaptability or versatility
If wireless receivers are made movable to enable dynamic power transfer, then application versatility is improved, but alignment between receivers and transmitters deteriorates
Solution Approach 1:
The system uses multiple transmitter-receiver pairs arranged in arrays, where each pair can operate independently. This segmentation allows the system to maintain precise alignment for each individual pair even when the overall system is movable, as misalignment of one pair does not affect the others
Solution Approach 2:
The patent combines multiple transmitter and receiver units into coordinated arrays that work together to provide power. By merging multiple alignment-capable units, the system achieves both movability and maintained alignment precision, as the combined output of properly aligned individual units provides robust power transfer
3Reliability
If voltage regulation is applied to each wireless receiver, then voltage stability is improved, but system complexity increases
Solution Approach 1:
The system assigns dedicated voltage regulators to individual wireless receivers, segmenting the voltage regulation function. While this increases the total number of regulators, each regulator operates independently and simply, reducing the complexity of control logic needed compared to a centralized regulation system
Solution Approach 2:
Each wireless receiver with its voltage regulator operates as a self-contained unit that autonomously regulates its own input voltage to produce stable output voltage. This self-service approach eliminates the need for complex inter-coordination between receivers, simplifying overall system control despite the presence of multiple regulators
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
Stabilizes voltage output, reduces thermal stress, and enhances power distribution efficiency by load sharing across transmitters and receivers, allowing simultaneous power transfer and minimizing system imbalances.
Implementation Method 1
Wireless power transfer refers to various technologies for transmitting energy by means of electric or magnetic fields
Implementation Method 2
each coil includes a tuning capacitor
Data Source
AI summary
System and method for wireless power transfer. The system comprises a plurality of wireless transmitters, connectable to a power source; a plurality of wireless receivers wherein each of the wireless receivers is configured to transiently receive power from at least one of the plurality of wireless transmitters when proximate thereto; and a plurality of voltage regulators, each voltage regulator electrically connected to at least one of the plurality of wireless receivers.