Modular Bidirectional Power Converter for Hot-Swap Reliability
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Solution Overview
Problem
Current power conversion systems are inadequate for the space sector, requiring improved methods and systems that are resilient, efficient, and adaptable to varying voltage demands, especially for In-Space, Lunar, and Mars-based electrical infrastructure.
Innovation Solution
A modular configurable electronic power converter (MCEPC) system that includes bidirectional converter modules with low and high voltage bridges connected in parallel and series, a power bus with filters and disconnects, and a controller module for feedback and instruction communication, allowing for hot swapping and redundancy, optimized for flexibility and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power conversion systems are designed for space sector applications, then reliability and resilience are improved, but device complexity increases
Solution Approach 1:
The power conversion system is divided into multiple independent converter modules that can be individually replaced or maintained. Each module contains complete power conversion functionality, allowing the system to maintain operation with partial degradation. This segmentation improves reliability through redundancy while managing complexity by standardizing modular components.
Solution Approach 2:
The system dynamically adjusts operating parameters such as voltage levels and power distribution routes based on system state and requirements. The controller module modifies conversion ratios and power flow paths to optimize performance and maintain reliability under varying conditions, thereby improving system adaptability without permanently increasing structural complexity.
2Adaptability or versatility
If bidirectional power conversion is implemented, then adaptability to varying voltage demands is improved, but device complexity increases
Solution Approach 1:
Each converter module is designed to perform multiple functions including bidirectional power conversion, voltage regulation, and isolation. The same hardware architecture supports both forward and reverse power flow, eliminating the need for separate converters for different directions. This multi-functionality achieves high adaptability while containing complexity within standardized universal modules.
3Ease of repair
If hot swappable modules are used, then ease of maintenance is improved, but reliability during swapping operations may worsen
Solution Approach 1:
The system prepares for module replacement by pre-configuring redundant power paths and pre-charging bypass circuits before actual module removal. The controller anticipates maintenance needs by redistributing power load to remaining functional modules, ensuring power continuity is maintained throughout the hot-swapping operation. This preliminary preparation eliminates reliability concerns during maintenance activities.
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 MCEPC system provides efficient, resilient, and adaptable power conversion capable of meeting flexible voltage demands, reducing maintenance and repair costs, and maintaining power flow with module failures, while being immune to radiation effects and suitable for various environments.
Implementation Method 1
One or more converter modules are configured to bidirectionally convert voltage from a power input and transmit converted voltage to a power output
Data Source
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AI summary
Systems, methods, and devices for converting electric power are disclosed. Converter modules convert power in a configurable manner in conjunction with a controller.