Smart Tap-Off Box and Rack PDU Layout for High-Density Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power distribution systems in data centers face challenges in handling high-density energy-intensive loads, particularly with the increasing need for air cooling in AI/ML applications, which complicates rear-rack airflow and access. Additionally, conventional power outlets are limited by physical size, amperage ratings, and compatibility, leading to inefficiencies and safety concerns.
Innovation Solution
A high-density power distribution system that incorporates smart tap-off boxes (TOBs) attached to an overhead busway, which resolve three-phase input power into single-phase output circuits with overcurrent protection. This system includes compact rack power distribution units (rPDUs) with mixed-amperage sockets and a monitoring system for real-time power data and remote control capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If power supply sizes increase to handle higher amperage loads, then power distribution capability is improved, but outlet counts per circuit decrease and breaker counts increase per rack power distribution unit
Solution Approach 1:
The patent divides the power distribution system into modular components: overhead busways that distribute power above the rack, and compact rack PDUs that receive power from the busways. This segmentation allows the bulk of power distribution infrastructure (busways with integrated breakers) to be separated from the rack-mounted units, reducing breaker counts per individual rack PDU while maintaining overall power distribution capability.
2Power
If power supply sizes increase to handle higher amperage loads, then power distribution capability is improved, but rear-rack airflow is hindered as well as access to rear-rack components
Solution Approach 1:
The patent moves the power distribution infrastructure from the horizontal rack plane to the vertical dimension by installing overhead busways above the rack. This dimensional shift relocates breakers and power distribution components away from the rear-rack space, preserving airflow paths and component access in the horizontal plane while maintaining power distribution capability through the vertical dimension.
Data Source
AI summary
A high-density power distribution system incorporates smart tap-off boxes (TOB) connected to an overhead busway and receiving therefrom a three-phase input power supply. The smart TOB resolves the three-phase input power into 3N single-phase output power circuits (where N is a positive integer) each connected to an overcurrent protection (OCP) device associated with an amperage level. A set of 3N conductors connected to the smart TOB carries the single-phase output power circuits to a rack power distribution unit (PDU, rPDU) in a server cabinet (e.g., via rack connection devices connecting the conductors to the rPDU), the rPDU including a linear array of output power sockets corresponding to the single-phase output power circuits.