Modular ATSPU Power System for Server Rack Redundancy
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Solution Overview
Problem
Existing power management systems for datacenters are large and expensive, lacking efficient and cost-effective solutions for redundant power supply to ensure continuous operation during primary power source interruptions.
Innovation Solution
A power system comprising a backplane assembly, detachably mountable automatic transfer switch and power supply units (ATSPSUs), and battery modules, which autonomously and communicatively manage direct current (DC) power distribution, switching between primary and secondary AC power sources, and battery backup, optimizing power usage and recharging to avoid overloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing power management systems use secondary power sources to ensure continuous operation during power interruptions, then reliability is improved, but device complexity and cost increase
Solution Approach 1:
The power system is divided into modular components: multiple power supply units (PSUs) that can be independently configured, battery modules that are detachably mounted, and a backplane assembly that coordinates them. This segmentation allows the system to provide redundant power protection without requiring a single large complex system, as each module can be independently sized and configured based on specific needs.
Solution Approach 2:
The battery modules are detachably mounted to the backplane assembly, allowing them to be nested within the existing rack structure. The PSUs connect to DC bus bars that are already present in the rack, nesting the backup power capability within the existing infrastructure rather than requiring separate external systems.
2Reliability
If existing power management systems use secondary power sources to ensure continuous operation during power interruptions, then reliability is improved, but cost increases
Solution Approach 1:
The system uses multiple standard PSUs that can be individually purchased and configured, rather than requiring a single expensive integrated system. The battery modules are separate detachable units that can be independently replaced or upgraded, reducing overall system cost through modular standard components.
Solution Approach 2:
The PSUs are configured to draw from multiple AC sources (primary and secondary) and can operate in multiple modes (normal operation, backup mode, battery charging). This multi-functionality eliminates the need for separate dedicated backup power systems, reducing overall cost while maintaining reliability.
3Reliability
If battery modules are used to provide backup power, then reliability is improved, but energy management complexity increases
Solution Approach 1:
The backplane assembly monitors the state of charge of battery modules and automatically manages charging/discharging cycles. The system includes feedback mechanisms that track power consumption, battery status, and AC source availability, automatically adjusting operation to maintain reliability without requiring complex manual energy management.
Solution Approach 2:
The battery modules are automatically recharged from AC power sources when available, and automatically discharge to provide backup power when needed, without requiring external intervention. The system self-manages the energy storage and release cycles, reducing management complexity.
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 system provides reliable and efficient DC power supply to datacenter components, reducing costs and minimizing the impact of power source failures, while allowing for standardized components and flexible operation to manage peak demands and prioritize loads effectively.
Implementation Method 1
Each of the one or more ATSPSUs is configured to generate direct current (DC) power from alternating current (AC) input power and output the DC power to DC bus bars of the server rack
Implementation Method 2
Each of the one or more BMs is configured to provide backup DC power to the DC bus bars in the event of discontinuity in the supply of DC power to the DC bus bars by the ATSPSUs
Data Source
AI summary
Power systems and methods for supplying direct current power to a server rack employ multiple power supply units. A method for supplying direct current power to a server rack includes receiving an alternating current (AC) power input. A first portion of the AC power input is transferred to a first automatic transfer switch (ATS). A first DC power input is generated from the first portion of the AC power input via a first power supply unit (PSU) and transferred to the server rack. A second portion of the AC power input is transferred to a second ATS. A second DC power input is generated from the second portion of the AC power input via a second PSU and transferred to the server rack.