Modular Power Supply Hot Swap Design
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Solution Overview
Problem
The existing power supply systems with redundancy to ensure high reliability result in increased costs and size due to duplication of components, and there is a need to enhance the mean time between failures (MTBF) while minimizing these costs.
Innovation Solution
A modular power supply design that allows for hot swapping of components, where higher failure rate components are on one portion and lower failure rate components are on another, with a detecting unit managing the connection and disconnection of these portions while the power supply is operational, ensuring compatibility and voltage matching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundancy is incorporated to allow continued operation in case of failure, then reliability is improved, but costs and size increase due to duplication of components
Solution Approach 1:
The power supply is divided into modular portions (first portion with higher failure rate components, second portion with lower failure rate components) that can be independently replaced. This segmentation allows redundancy to be implemented only for critical components rather than duplicating the entire power supply system.
Solution Approach 2:
Different portions of the power supply have different failure rates, and redundancy is strategically applied to the first portion with higher failure rate components (fans, filters, fuses) while the second portion with lower failure rate components (rectifying stage, conversion stage) operates without duplication. This local quality approach optimizes the balance between reliability and component quantity.
2Loss of time
If components are swapped to maintain operation, then downtime is reduced, but system complexity increases due to hot swap management requirements
Solution Approach 1:
A detecting unit is provided that proactively monitors the operational status of components in the first portion and detects when they fail or need replacement. This preliminary detection allows for planned hot swapping operations rather than reactive repairs, reducing downtime while managing complexity through automated monitoring.
Solution Approach 2:
The detecting unit provides feedback about the operational status of components to the control system, enabling intelligent management of hot swap operations. This feedback mechanism automates the complexity of hot swap management by continuously monitoring component health and coordinating replacement operations.
Data Source
AI summary
There is described a modular power supply and a method of connecting and disconnecting the modular parts thereof. First and second portions of the power supply may be connected and disconnected in a hot swap manner while the power supply is in operation.