Load-Adaptive Aircraft Voltage Converter for Harmonic Clashes
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Solution Overview
Problem
Existing voltage converters in aircraft electrical systems fail to optimally adapt to changing aircraft loads, leading to potential harm by clashing harmonic frequencies and instability, which can compromise safety and efficiency, especially in hybrid electric aircraft.
Innovation Solution
A voltage converter system with a controller that modifies control parameters based on data from aircraft loads, including their state and capacitance, using a Proportional-Integral-Derivative (PID) control system and a lookup table to ensure optimal conversion of input power to output power, preventing harmful frequencies and maintaining stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the voltage converter uses fixed control parameters optimized for normal operation, then the conversion efficiency is maximized under normal conditions, but the system becomes harmful when aircraft loads change due to harmonic frequency clashes
Solution Approach 1:
The patent implements dynamic control parameters that automatically adjust based on detected aircraft load conditions. The controller monitors the electrical system and modifies control parameters in real-time, transitioning from fixed static parameters to dynamic adaptive parameters that respond to changing load configurations, thereby preventing harmonic clashes while maintaining conversion efficiency.
Solution Approach 2:
The patent changes the control parameters of the voltage converter based on detected aircraft load conditions. By modifying parameters such as switching frequency, pulse width modulation duty cycle, or other converter control parameters in response to load changes, the system adapts its operation to avoid harmonic frequency clashes while maintaining optimal conversion efficiency under varying conditions.
2Device complexity
If the voltage converter operates with fixed control parameters, then the system complexity is low, but the adaptability to changing aircraft loads is poor
Solution Approach 1:
The patent implements a feedback mechanism where the controller continuously monitors aircraft load conditions and uses this information to adjust control parameters. The feedback loop detects changes in load configuration (such as circuit breaker positions or load consumption levels) and automatically modifies converter operation, providing adaptability without requiring complex manual intervention or overly complicated control architecture.
Solution Approach 2:
The voltage converter system performs self-adjustment by automatically detecting its own operating conditions and modifying its control parameters accordingly. The controller monitors the electrical system state and autonomously changes control parameters to match current load conditions, enabling the system to serve itself and adapt without external intervention, thereby maintaining low complexity while achieving high adaptability.
3Ease of operation
If the voltage converter does not adapt to load changes, then the ease of operation is high, but the safety of the aircraft electrical system is compromised
Solution Approach 1:
The patent uses feedback from the electrical system state (such as circuit breaker positions and load consumption data) to automatically adjust converter operation. This feedback mechanism enables the system to maintain safety by detecting potentially harmful conditions and correcting them automatically, while requiring no manual intervention from operators, thus preserving ease of operation while significantly improving reliability.
Solution Approach 2:
The voltage converter system autonomously monitors its own operating conditions and self-corrects to prevent harmful situations. By automatically detecting load changes and adjusting control parameters to avoid harmonic clashes and instability, the system protects itself and the broader aircraft electrical system without requiring operator attention, thereby maintaining operational simplicity while enhancing safety and reliability.
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 ensures safe and efficient power supply to aircraft loads by optimizing voltage, current, and frequency, preventing harmonic clashes and maintaining system stability even with sudden changes in load capacitance, thus enhancing aircraft safety and efficiency.
Implementation Method 1
The conversion circuitry is configured to convert the input electrical power to supply the output electrical power based on one or more control parameters
Implementation Method 2
by modifying the control parameters of the converter based on data relating to the aircraft loads, the output electrical power can meet the requirements of the aircraft loads, for example by ensuring the harmonic frequency of the converter does not clash with the harmonic frequency of the aircraft loads
Data Source
Figure 1
AI summary
A voltage converter (1) for an aircraft electrical system (100) comprises: an input power line (2) configured to receive input electrical power; an output power line (3) configured to supply output electrical power to aircraft loads (9, 10, 11, 12); conversion circuitry (4); and a controller (5); wherein the conversion circuitry (4) is configured to convert the input electrical power to supply the output electrical power based on one or more control parameters (6); wherein the controller (5) is configured to receive data (7) relating to the aircraft loads (9, 10, 11, 12) and modify at least one control parameter (6) based on the data (7).