Power Distribution Unit Dynamic AC DC Switching
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Solution Overview
Problem
Conventional power distribution systems in data centers, relying on uninterruptible power systems (UPS), face inefficiencies and increased power consumption due to decreased conversion efficiency when switching between AC and DC power sources.
Innovation Solution
A power distribution system that dynamically switches between AC and DC power sources using a power distribution unit equipped with a battery, where the power distribution controller detects voltage thresholds to determine whether to use the AC input or the battery's DC power, thereby reducing unnecessary power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional UPS system is used to convert AC to DC and charge batteries, then power supply stability is improved, but power consumption increases and conversion efficiency decreases
Solution Approach 1:
The system dynamically switches between AC power input and battery power output based on real-time voltage detection. The power distribution controller continuously monitors AC voltage and automatically selects the optimal power source, making the power supply system adaptive rather than static. This resolves the contradiction by enabling the system to maintain reliability through automatic switching while minimizing power consumption by avoiding unnecessary AC-to-DC conversion when battery power suffices.
Solution Approach 2:
The system changes its operational parameters by switching between different power sources based on detected voltage levels. When AC voltage is within acceptable thresholds, the system uses AC power; when voltage exceeds thresholds or AC is unavailable, it switches to battery power. This parameter-based switching resolves the technical contradiction by optimizing power consumption while maintaining supply stability through conditional source selection.
2Duration of action of stationary object
If AC power is continuously converted to DC through the UPS, then power supply continuity is maintained, but conversion efficiency decreases and additional power consumption occurs
Solution Approach 1:
The invention extracts the essential function of power supply continuity from the UPS conversion process. Instead of continuously converting AC to DC through the UPS, the system directly supplies AC power to servers when available, extracting only the necessary voltage monitoring and switching functions. This resolves the contradiction by maintaining power supply continuity while eliminating unnecessary conversion losses.
Solution Approach 2:
The power distribution controller acts as an intermediary that monitors AC voltage and intelligently switches between AC and battery power sources. This intermediary component enables the system to maintain power supply continuity by automatically selecting the appropriate source, while avoiding continuous AC-to-DC conversion and its associated energy losses. The intermediary resolves the contradiction by enabling continuity through smart switching rather than continuous conversion.
3Stability of the object's composition
If the UPS system converts AC to DC for all power distribution, then power supply consistency is improved, but system power consumption increases
Solution Approach 1:
The system dynamically adjusts its power distribution strategy based on real-time conditions. Rather than consistently converting AC to DC through the UPS, the system adaptively switches between direct AC distribution and battery-based DC distribution. This dynamic approach maintains power supply consistency through intelligent source selection while minimizing system power consumption by avoiding unnecessary conversions.
Solution Approach 2:
The system changes its operational parameters by switching power sources based on detected voltage levels and power availability. When AC voltage is stable, the system uses AC power distribution; when voltage fluctuates or battery power is available, it switches to DC distribution. This parameter-based switching maintains power supply consistency while reducing system power consumption by optimizing the choice of power source.
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
This solution enhances power supply efficiency, reduces energy costs, and maintains normal server operations by dynamically selecting the optimal power source, replacing the inefficiencies of traditional UPS systems.
Implementation Method 1
a battery configured for providing a direct current (DC)
Data Source
AI summary
A power distribution system includes at least one server and a power distribution unit coupled to the at least one server. The power distribution unit includes a power distribution controller and a power input unit, a battery and a power switcher coupled to the power distribution controller. The power distribution controller detects a voltage of an alternating current (AC) received from power source by the power input unit. If the voltage is greater than a first threshold and smaller than a second threshold, the power distribution controller switches the power switcher to be coupled to the power input unit, and provides the alternating current (AC) to the at least one server. Conversely, the power distribution controller switches the power switcher to be coupled to the battery, and provides a direct current (DC) to the at least one server. Accordingly, power consumption and waste during power supply may be effectively reduced.