Hybrid Turbine Engine Capacitor Balancing for Rapid Shaft Assist
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Solution Overview
Problem
Conventional systems for aircraft propulsion fail to provide efficient and efficient electrical energy storage and distribution, and the method for controlling a hybrid turbine engine propulsion systems, and the method for controlling a hybrid turbine engine for an aircraft.
Innovation Solution
A method for controlling a hybrid turbine engine that includes a power conversion device and an energy storage assembly with capacitive components, such as supercapacitors, to rapidly deliver electrical energy while ensuring stability and durability, by precharging, balancing, and converting stored energy into mechanical energy for aircraft maneuvers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional electric generators are used to power onboard electrical systems, then electrical energy can be converted from mechanical energy, but the system generates significant bulk and high electrical losses
Solution Approach 1:
The patent changes the fundamental parameter of energy storage from conventional generators to capacitive energy storage assemblies. This enables rapid energy delivery with significantly reduced electrical losses and eliminates the need for large-capacity electrical energy sources and associated heavy electrical connections, directly resolving the contradiction between energy efficiency and system bulk.
2Speed
If capacitive components are rapidly charged to high voltage to deliver large amounts of electrical energy, then energy delivery speed improves, but wear and degradation of capacitive components increases
Solution Approach 1:
The patent applies preliminary action by precharging capacitive components to a first partial charge value before rapid discharge. The control method monitors voltage across capacitive components and manages charging/discharging cycles to ensure they are charged to optimal levels before use, then rapidly discharged when needed. This preliminary preparation enables fast energy delivery while preventing excessive wear through controlled voltage management and balancing.
Solution Approach 2:
The patent implements feedback control by continuously monitoring the voltage across capacitive components and adjusting charging/discharging operations accordingly. The control method uses voltage feedback to determine when to charge, discharge, or balance capacitive components, ensuring optimal operation and preventing degradation from excessive voltage or improper charging cycles, thus maintaining reliability during rapid energy delivery.
3Quantity of substance
If multiple capacitive components are used in parallel to increase energy storage capacity, then energy storage increases, but voltage imbalance between components worsens
Solution Approach 1:
The patent introduces an intermediary balancing operation that acts as a mediator between multiple capacitive components. The control method includes a balancing step that monitors voltage across individual capacitive components and redistributes charge to equalize voltages. This intermediary balancing action enables the system to maintain voltage stability and composition uniformity even when multiple capacitive components are used in parallel to increase total energy storage capacity.
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 method optimizes the operation of capacitive components, providing rapid energy delivery and reducing wear, enhancing aircraft propulsion and safety during critical maneuvers.
Implementation Method 1
an energy storage assembly connected to the power conversion device, the energy storage assembly comprising a plurality of capacitive components
Implementation Method 2
at least one power conversion device mounted on the low-pressure shaft or high-pressure shaft
Data Source
AI summary
A method for controlling a hybrid turbine engine for an aircraft uses an energy storage assembly having a plurality of capacitive components. The turbine engine having a low-pressure shaft, a high-pressure shaft, and at least one power conversion device mounted on the low-pressure shaft or high-pressure shaft. The method includes precharging the capacitive components until a mean voltage reaches a first partial charge value, balancing the voltages of the capacitive components, charging the capacitive components until the mean voltage reaches a high value, and converting electrical energy stored in the storage assembly into mechanical energy delivered to the low-pressure shaft and/or to the high-pressure shaft in order to assist with maneuvering the aircraft.