Multi-axis Alignment Enclosure for Modular Data Center Power Busways
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Solution Overview
Problem
In large-scale information handling systems deployed as modular data centers, the connection of thick, rigid power busbars between adjacent IT modules is challenging due to surface variations and misalignment, making it difficult to establish efficient power distribution.
Innovation Solution
A power busway assembly comprising first and second power busways with a cable tap box and an adjustable mounting fixture that allows for flexible alignment and connection, enabling the busways to be securely attached despite linear misalignment, facilitating flexible cable connections between them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If thick, rigid power busbars are used to carry sufficient power capacity, then power distribution capability is improved, but connection difficulty at intersecting surfaces increases due to rigidity and misalignment
Solution Approach 1:
The power busbar connection system is divided into multiple segments: the rigid power busbar for power carrying, the flexible connector for alignment adjustment, and the mounting fixture for positioning. This segmentation allows each component to fulfill its specific function - the busbar maintains power capacity while the flexible connector handles misalignment, resolving the contradiction between rigidity and connectability
Solution Approach 2:
A flexible connector is introduced as an intermediary element between the rigid power busbar and the adjacent IT module. This intermediary component absorbs the misalignment caused by surface variations and module shifts, enabling the rigid busbar to maintain its power distribution capability while the flexible connector ensures successful connection despite alignment issues
2Productivity
If busways are aligned to respective IT modules, then power distribution efficiency is improved, but adaptability to surface variations and module shifts decreases
Solution Approach 1:
The mounting system incorporates adjustable and flexible elements that allow dynamic adaptation to misalignment. The flexible connector can bend and the mounting fixture can be positioned at various locations along the busway, enabling the system to adapt to surface variations and module shifts while maintaining efficient power distribution through proper electrical contact
3Power
If rigid metal plates are used for power busbars, then power carrying capacity is improved, but flexibility for connection at misaligned surfaces is reduced
Solution Approach 1:
The system segments the power transmission function from the alignment function. The rigid metal plate busbar retains full power carrying capacity while the separate flexible connector handles the alignment and connection flexibility, allowing both requirements to be satisfied simultaneously without compromising either power capacity or connection adaptability
Solution Approach 2:
Different parts of the connection system have different mechanical properties tailored to their specific functions: the busbar maintains rigid metal construction for optimal power carrying capacity at critical electrical contact points, while the flexible connector provides local flexibility and adaptability at the connection interface, allowing the system to optimize both power capacity and connection flexibility in their respective locations
Data Source
AI summary
A power busway assembly of a power distribution system in a modular data center (MDC) includes first and second power busways attached respectively to first and second information (IT) modules that are approximately aligned. A cable tap box is attached to the first IT module and receives a first free end of the first power busway in an opening in a first surface. A second surface of the cable tap box has a second busway opening that is sized larger than the second power busway to allow an amount of linear misalignment. An adjustable mounting fixture has a central opening that slidingly engages the second free end of the second power busway. An outer portion of the adjustable mounting fixture adjustably attaches to the second surface of the cable tap box to position the second power busway within the second busway opening, enabling flexible cable connections between busways.