More-Electric Engine Power Architecture With Electronic SLMD Module
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Solution Overview
Problem
Conventional more-electric engine (MEE) systems require separate backup power generating systems for primary and secondary power, increasing costs, weight, and complexity due to reliance on distinct mechanical architectures.
Innovation Solution
A MEE system with a first and second power generating sub-system, along with an electronic source/load management and distribution (SLMD) module, allowing operation in multiple modes to adjust power delivery to electrical sub-systems, enabling fault tolerance and efficient power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate backup power generating systems are provided for primary and secondary power, then reliability is improved, but device complexity and weight increase
Solution Approach 1:
The patent merges the primary and secondary power generating systems into a single integrated power generating system that can serve both functions. The electronic SLMD module manages power distribution dynamically, allowing one power generating system to support both primary and secondary buses, thereby eliminating the need for separate backup systems while maintaining reliability.
Solution Approach 2:
The integrated power generating system is designed to perform multiple functions - it can generate power for both the primary power bus and secondary power bus. The electronic SLMD module enables the system to adapt its configuration, allowing the same power generating system to fulfill different power supply roles based on operational needs, thus achieving universality.
2Reliability
If separate backup power generating systems are provided for primary and secondary power, then reliability is improved, but weight increases
Solution Approach 1:
By merging the primary and secondary power generating systems into one integrated system, the patent eliminates the weight of redundant separate backup systems. The single power generating system shares common components and infrastructure, significantly reducing overall system weight while the electronic SLMD module ensures reliable power distribution through intelligent management.
3Device complexity
If an electronic SLMD module is implemented for flexible power distribution, then device complexity is reduced, but control difficulty increases
Solution Approach 1:
The electronic SLMD module is designed with self-service capabilities, automatically monitoring system status, detecting faults, and adjusting power distribution without requiring complex external control. The module independently manages the complexity of power management, simplifying the overall system architecture while maintaining ease of operation through autonomous decision-making algorithms.
Data Source
AI summary
A more-electric engine (MEE) system configured to operate in a plurality of operating modes includes a first power generating sub-system and a second power generating sub-system. The first power generating sub-system is configured to output electric power to a first power bus. The second power generating sub-system is configured to output electric power to a second power bus. The MEE system further includes an electronic source/load management and distribution (SLMD) module in power and signal communication with each of the first power generating sub-system, the second power generating sub-system, and the plurality of electrical sub-systems. The electronic SLMD module is configured to selectively operate the MEE system in one of a first operating mode or a second operating mode among the plurality of operating modes. The first and second operating modes adjust the delivery of the first and second electric power to the first and second power buses.