Radial Generator Stator Layout for Split FADEC and Ignitor Power
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Solution Overview
Problem
Gas-turbine engine powered vehicles face inefficiencies due to the need for larger and heavier power supplies to accommodate the higher electrical energy demands of components like ignitors, which results in increased weight and reduced operational efficiency.
Innovation Solution
The implementation of a radial generator with stator teeth of different axial lengths, allowing for windings that produce varying levels of electrical energy to meet the distinct requirements of different components, such as FADEC and ignitors, enabling more efficient energy use and reducing the need for oversized power supplies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a radial generator is designed with uniform axial length stator teeth to accommodate the higher electrical energy demand of the ignitor, then the ignitor receives sufficient electrical energy, but the FADEC receives excess electrical energy requiring a larger and heavier power regulator
Solution Approach 1:
The stator teeth are segmented into different axial length groups (first group with first axial length, second group with second axial length) to provide different electrical energy levels to different components. This segmentation allows the generator to deliver tailored power levels - higher voltage to the ignitor and lower voltage to the FADEC - eliminating the need for a large power regulator and reducing overall system weight.
Solution Approach 2:
Different stator teeth are given different local properties (axial lengths) to match the specific electrical energy requirements of different components. The first stator teeth have a first axial length optimized for ignitor power needs, while the second stator teeth have a second axial length optimized for FADEC power needs, allowing each component to receive precisely the energy it requires without waste or excess.
2Ease of manufacture
If a radial generator is designed with uniform axial length stator teeth, then the structure is simpler, but the FADEC power supply must be oversized to handle variable electrical energy demands of different components
Solution Approach 1:
The stator teeth are segmented into different axial length groups (first group with first axial length, second group with second axial length) to provide different electrical energy levels to different components. This segmentation allows the generator to deliver tailored power levels - higher voltage to the ignitor and lower voltage to the FADEC - eliminating the need for a large power regulator and reducing overall system weight.
Solution Approach 2:
Different stator teeth are given different local properties (axial lengths) to match the specific electrical energy requirements of different components. The first stator teeth have a first axial length optimized for ignitor power needs, while the second stator teeth have a second axial length optimized for FADEC power needs, allowing each component to receive precisely the energy it requires without waste or excess.
3Use of energy by moving object
If stator teeth have different axial lengths with different windings, then different levels of electrical energy are produced for different components, but the manufacturing precision requirements increase
Solution Approach 1:
The stator teeth are segmented into different axial length groups (first group with first axial length, second group with second axial length) to provide different electrical energy levels to different components. This segmentation allows the generator to deliver tailored power levels - higher voltage to the ignitor and lower voltage to the FADEC - eliminating the need for a large power regulator and reducing overall system weight.
Solution Approach 2:
Different stator teeth are given different local properties (axial lengths) to match the specific electrical energy requirements of different components. The first stator teeth have a first axial length optimized for ignitor power needs, while the second stator teeth have a second axial length optimized for FADEC power needs, allowing each component to receive precisely the energy it requires without waste or excess.
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
This approach allows for a smaller and lighter power supply for the FADEC, leading to improved fuel efficiency, extended operational time, and reduced weight in vehicles, enhancing overall performance.
Implementation Method 1
A radial generator having uniform, axial length stator teeth may therefore be designed to accommodate windings that produce the relatively higher electrical energy demand of the ignitor
Data Source
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AI summary
An example electrical machine configured to generate electrical energy used by two or more components of a gas-turbine engine is described herein. The electrical machine comprises one or more first stator teeth having a first axial length that support first windings configured to generate a first level of the electrical energy used by a first component of the two or more components. The electrical machine also comprises one or more second stator teeth having a second axial length that support second windings configured to generate a second level of the electrical energy used by a second component of the two or more components, the first axial length different than the second axial length.