Split Power Control Electronics With Fiber-Optic Multiplexing
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Solution Overview
Problem
Existing power electronics systems in aircraft are large and heavy due to the integration of control modules with high-power components, leading to thermal stress and reduced reliability, as well as space constraints in limited aircraft real estate.
Innovation Solution
The system employs split power control electronics with fiber-optic multiplexing, where low-power control modules are physically separated from high-power components and located in a temperature-controlled environment, using fiber-optic cables to connect and transmit control signals, reducing thermal stress and complexity while minimizing weight and size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If control modules are integrated with high-power components in power electronics systems, then control and power functions are unified, but thermal stress increases and reliability decreases due to heat generation from high-power components
Solution Approach 1:
The system divides the power electronics into separate modules: high-power components (power electronics modules) and low-power control components (control cards with control modules) are physically segmented and located in different positions within the aircraft power system
Solution Approach 2:
The control modules are extracted from the high-power environment and placed in separate control cards that are remotely located from the power electronics modules, removing the control components from the harmful thermal environment while maintaining functional integration through fiber-optic connections
2Speed
If control modules are located near high-power components, then signal transmission distance is reduced, but thermal stress and overheating increase
Solution Approach 1:
The system replaces traditional electrical signal transmission through copper cables with optical signal transmission through fiber-optic cables, allowing control signals to be transmitted over longer distances without thermal interference while maintaining signal integrity and transmission speed
3Reliability
If traditional copper cables are used for control signal transmission, then electrical connectivity is established, but weight and system complexity increase
Solution Approach 1:
The system substitutes heavy copper electrical cables with lightweight fiber-optic cables for control signal transmission, significantly reducing the weight of the cable system while improving transmission capabilities and reducing electromagnetic interference
4Reliability
If multiple control cards are used for redundant control, then reliability is improved, but device complexity increases
Solution Approach 1:
The system designs control cards with universal functionality that can operate in multiple modes (primary control, standby, or load-sharing redundant mode), allowing the same hardware configuration to provide redundant control capabilities without requiring different specialized components for each control path
Data Source
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AI summary
Provided are embodiments of a system for split power-control electronics with fiber-optic multiplexing. The system includes one or more power electronics modules configured to provide power to a load, and a control card (112, 114) configured to control the one or more power electronics modules. The system also includes a control module (110) configured to receive and process the control card, and one or more connections, the one or more connections configured to connect a control module to the one or more power electronics modules. Also provided are embodiments of a method for operating power electronics modules in a redundant mode.