RF Wireless Power Transfer Control for Aircraft Interference Limits
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Solution Overview
Problem
Aircraft design faces challenges with cabling weight, and existing wireless power transfer technologies face inefficiencies and interference issues in powering wireless components within aircraft networks.
Innovation Solution
A system and method for wireless power transfer using radiative radio frequency (RF) technology with a WPT transmit controller to manage power levels within a predetermined range, incorporating feedback loops and geographical location adjustments to optimize power transmission and prevent interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple WPT transmission devices are used to power wireless components in aircraft, then power delivery reliability is improved, but electromagnetic interference between devices increases
Solution Approach 1:
The system employs a feedback mechanism where the WPT transmit controller receives information about the operational status and power levels of multiple transmission devices, continuously adjusts transmission parameters to maintain power delivery within predetermined ranges, and coordinates device operation to minimize electromagnetic interference while ensuring reliable power supply to wireless components
Solution Approach 2:
The controller dynamically changes transmission parameters including power levels, frequency, and timing of multiple WPT transmission devices based on real-time conditions, ensuring that the combined effect provides reliable power delivery while maintaining electromagnetic field levels within acceptable ranges and preventing harmful interference
2Reliability
If WPT transmission power levels are increased to ensure sufficient power delivery, then power supply reliability is improved, but risk of exceeding maximum power levels and causing interference increases
Solution Approach 1:
The system implements dynamic power level adjustment where the WPT transmit controller continuously monitors the combined power output of multiple transmission devices and adapts individual device power levels in real-time to maintain the total power delivery within the predetermined range, ensuring sufficient power supply while preventing excessive power levels that could cause interference
Solution Approach 2:
A feedback loop continuously monitors the actual power delivery levels from multiple WPT transmission devices and provides real-time adjustment signals to the transmit controller, which then modifies transmission parameters to keep power levels within the safe and effective predetermined range, balancing reliability and interference prevention
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
Ensures reliable power delivery to wireless components while minimizing weight and interference, enhancing flexibility and simplicity in aircraft wireless networks.
Implementation Method 1
radio frequency (RF) power transfer is used. Radio-frequency (RF) WPT is a widely adopted radiative method that utilizes radio signals at a given operational frequency
Implementation Method 2
Key component in the link is the RF-to-DC converter, which converts the received RF power signal into a DC power
Data Source
AI summary
Systems for wireless power transfer (WPT) include one or more WPT transmission devices and one or more WPT receiver devices to wirelessly receive power transmitted by the one or more WPT transmission devices. The WPT receiver devices are arranged at a fixed position relative to each of the WPT transmission devices. A WPT transmit controller of the systems is coupled to the one or more WPT transmission devices to control WPT transmission properties of the one or more WPT transmission devices in order to harmonize and adapt the transmit power level at the fixed position of the one or more WPT receiver devices.