Distributed Power Converters for Aircraft Weight Reduction
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Solution Overview
Problem
Aircraft power distribution systems face challenges in minimizing weight and complexity due to the use of high voltage generators, which require heavy insulation to prevent electrical faults, while maintaining efficient power transmission over distance.
Innovation Solution
A power distribution system that employs a series of power converters to step-up low voltage power to high voltage for transmission, and then step-down to low voltage for electrical loads, using a controller module to dynamically adjust power conversion and ensure equal power distribution to motors, reducing the need for high voltage insulation and unnecessary components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If high voltage generators are used to transmit power over long distances, then power transmission efficiency is improved, but system weight increases due to required high voltage insulation
Solution Approach 1:
The power conversion function is segmented across multiple converter modules distributed along the power transmission path. Each converter operates at lower voltage levels, eliminating the need for high voltage insulation throughout the entire system while maintaining efficient power transmission over long distances.
Solution Approach 2:
Multiple power converter modules act as intermediaries between the power source and remote loads. These converters enable power transmission at lower voltages by converting and redistributing power locally, thereby avoiding the need for heavy high voltage insulation in the transmission lines.
2Reliability
If high voltage insulation is added to prevent electrical faults, then system reliability is improved, but device complexity increases
Solution Approach 1:
The system uses multiple relatively simple, lower-voltage converter modules instead of complex high voltage insulation systems. These converters can be more easily replaced and maintained, reducing overall system complexity while maintaining reliability through distributed power conversion.
3Loss of energy
If high voltage transmission is used to minimize transmission losses, then energy efficiency is improved, but manufacturing complexity increases due to insulation requirements
Solution Approach 1:
The power transmission system is segmented into multiple sections with distributed converter modules. Each section operates at lower voltage levels, simplifying manufacturing requirements for insulation and electrical components while maintaining overall energy efficiency through coordinated power conversion across the distributed system.
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 reduces the weight and complexity of the power distribution system by minimizing the use of high voltage insulation, enabling efficient power transmission over long distances while ensuring consistent power delivery to electrical loads, leading to a more reliable, cost-effective, and lighter system.
Implementation Method 1
A power distribution system employs a series of power converters to step-up low voltage power to high voltage for transmission, and then step-down to low voltage for electrical loads
Data Source
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AI summary
A power distribution system (10) includes a first set of power converters (28) arranged with a respective set of power inputs (30), and having a respective set of power outputs (32), and at least one controller module communicatively connected with the first set of power converters (28) and configured to controllably adjust the power conversion of the first set of power converters (28), and method of operating the power distribution system (10).