Bi-directional PDU Link for Fault-Tolerant Power Routing
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Solution Overview
Problem
In data centers, power distribution systems face challenges in maintaining continuous power supply to servers and equipment when one power distribution unit (PDU) fails, leading to potential power outages and equipment shutdowns.
Innovation Solution
Implementing a bi-directional link system between PDUs, where each PDU has an electric power router that can detect faults in the primary power source and communicatively engage another PDU to manage power receipt and routing, ensuring seamless power distribution through alternate power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single power source is used to supply power to a PDU, then the system is simple and cost-effective, but the system lacks reliability when the power source fails
Solution Approach 1:
The patent combines multiple power sources with a single PDU system, allowing the PDU to receive power from either its primary power source or an alternate power source through a bi-directional link. This merging of power sources resolves the contradiction by providing redundancy (improving reliability) while keeping the overall system architecture integrated rather than completely separate (managing complexity).
Solution Approach 2:
The patent implements preliminary action by pre-configuring the bi-directional power link and alternate power source before a failure occurs. The electric power router is pre-programmed to automatically detect failures and switch power sources without human intervention. This preliminary setup ensures immediate failover capability (improving reliability) while maintaining a manageable system structure (controlling complexity).
2Loss of time
If manual intervention is required to switch power sources during a failure, then the system structure is simple, but the response time is slow and downtime increases
Solution Approach 1:
The patent implements feedback through the electric power router, which continuously monitors the status of the primary power source and automatically triggers a switch to the alternate power source when a failure is detected. This automated feedback loop eliminates manual intervention delays (reducing time loss) while maintaining a relatively simple system structure (managing automation complexity).
Solution Approach 2:
The system performs self-service by automatically detecting power failures and switching to alternate power sources without requiring human operator intervention. The electric power router autonomously manages the power source selection and switching, significantly reducing downtime (improving time efficiency) while keeping the control mechanism integrated within the existing PDU architecture (managing automation complexity).
3Reliability
If a bi-directional power link is implemented between PDUs, then power reliability is improved through alternate power sources, but the device complexity and cost increase
Solution Approach 1:
The patent applies universality by designing the bi-directional power link to serve multiple functions: it acts as a communication channel for fault detection, a power transfer path for alternate power supply, and an integration mechanism for coordinating between multiple PDUs. This multi-functionality improves power reliability while avoiding the need for completely separate redundant systems, thereby managing complexity.
Solution Approach 2:
The patent introduces another dimension by utilizing the existing communication infrastructure between PDUs to also carry power transfer capabilities. Instead of adding purely physical redundant power paths, the solution leverages the bi-directional communication dimension to enable power sharing, thus improving reliability while minimizing additional hardware complexity.
Data Source
AI summary
Power distribution systems having a bi-directional link for delivery of power between each other are disclosed. According to an aspect, a PDU includes a first power inlet configured to receive electric power from a power source. The PDU includes a second power inlet configured to receive electric power from another power distribution unit. The PDU also include an electric power router configured to determine whether the power source is in a fault condition for delivering electric power to the first power inlet. Further, the electric power router is configured to communicatively engage the other PDU for managing receipt of electric power from the other PDU based on the fault condition. The electric power router is configured to receive, at the second power inlet, electric power from the other PDU. The electric power router is also configured to route, to power outlets, the electric power received from the other PDU.