Dual-Output UPS Architecture for AC/DC Backup Redundancy
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Solution Overview
Problem
Current power shelf architectures in data centers often lack sufficient power backup redundancy during power failures, which can disrupt critical IT equipment operations.
Innovation Solution
A dual output uninterruptible power supply (UPS) system with AC and DC outputs, incorporating a rectifier, inverter, battery backup, and stepdown converter, providing redundancy by switching to DC power during anomalies and sharing power with the power shelf.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard power shelf architecture is used, then the system structure is simple, but the power backup redundancy is insufficient during power failures
Solution Approach 1:
The power supply system is segmented into multiple independent power paths: a first power path providing AC output through an inverter, and a second power path providing DC output through a step-down converter. This segmentation allows each path to independently support critical loads during different failure scenarios, thereby improving power backup redundancy without requiring a complete system redesign.
Solution Approach 2:
The UPS system is designed with multi-functionality to serve different purposes through its dual outputs. The first output (AC) serves general AC-powered equipment, while the second output (DC) specifically serves DC-powered equipment or acts as a backup during AC path failures. This universal design allows a single system to address multiple power supply needs and failure modes.
2Reliability
If a dual output UPS system is implemented, then power availability during outages is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple power conversion functions into a single integrated UPS system. The rectifier, inverter, battery backup, and step-down converter are combined in one system with a unified control mechanism that automatically manages power distribution between the two outputs based on detected anomaly conditions, reducing the complexity of managing separate systems.
Solution Approach 2:
The control mechanism acts as an intermediary that monitors power conditions and automatically switches between normal operation and anomaly response modes. It manages the complexity of coordinating multiple power paths by providing centralized control, automatically detecting failures, and routing power through appropriate converters without requiring manual intervention.
3Reliability
If the second output provides DC power during anomalies, then redundancy is enhanced, but the energy conversion losses increase
Solution Approach 1:
The system dynamically adjusts its operating mode based on real-time power conditions. During normal operation, the system operates in a high-efficiency mode with minimal conversions. Upon detecting an anomaly condition, it dynamically switches to the anomaly response mode where the second output provides DC power through the battery backup and step-down converter, optimizing the balance between redundancy and energy efficiency.
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
Ensures continuous power availability and increased uptime during power outages by supplying AC or DC power as needed, enhancing redundancy and efficiency in power distribution.
Implementation Method 1
a rectifier configured to receive alternating current (AC) power
Implementation Method 2
a first output connected to the rectifier through an inverter. The first output is configured to output an AC power supply
Implementation Method 3
a second output connected to the rectifier through a battery backup
Implementation Method 4
a stepdown converter. The second output is configured to output a direct current (DC) power supply
Data Source
AI summary
An uninterruptible power supply (UPS) includes a rectifier configured to receive alternating current (AC) power. The UPS further includes a first output connected to the rectifier through an inverter. The first output is configured to output an AC power supply. The UPS also includes a second output connected to the rectifier through a battery backup and a stepdown converter. The second output is configured to output a direct current (DC) power supply in response to a detected power anomaly condition, thereby providing extra redundancy that allows for increased power availability and uptime.