Automatic Transfer Switching With Phase Selection for Balanced Server Power
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Solution Overview
Problem
Power distribution systems in data centers face challenges in balancing power consumption across multiple phases, leading to potential circuit breaker tripping and server shutdowns due to imbalanced power usage, especially when servers draw power from a single phase, causing strain on the AC power source.
Innovation Solution
An automatic transfer switching (ATS) system that includes phase-selection interfaces and switching devices to dynamically route any of the multiple phases of power to single-phase receptacles, ensuring balanced power distribution and switching between power sources when one becomes unavailable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If servers draw power from a single phase to simplify power distribution, then ease of operation is improved, but power balance deteriorates causing circuit breaker tripping and server shutdowns
Solution Approach 1:
The system dynamically monitors power consumption across all phases and automatically adjusts phase assignments for server racks. When imbalance is detected, the controller reassigns servers to different phases to restore balance, making the power distribution adaptive rather than static.
Solution Approach 2:
The system continuously monitors power consumption metrics from all phases and uses this feedback to make real-time decisions about phase assignments. The controller receives power balance information and adjusts routing accordingly, creating a closed-loop control system that prevents circuit breaker tripping.
2Reliability
If multiple phases are distributed to multiple receptacles to balance power consumption, then power balance is improved, but device complexity increases due to phase-selection interfaces and switching devices
Solution Approach 1:
The ATS system performs multiple functions: it provides automatic transfer switching between power sources, distributes power across multiple phases, monitors power consumption, and dynamically reassigns loads. This multi-functional approach consolidates what would otherwise require separate systems into a single integrated platform.
Solution Approach 2:
The controller acts as an intermediary between the power sources and the server racks. It receives power from multiple phases through the ATS system and intelligently distributes it to appropriate receptacles, simplifying the overall system architecture by centralizing control logic.
3Reliability
If automatic transfer switching is implemented to switch between power sources, then reliability is improved, but device complexity increases due to switching devices and control systems
Solution Approach 1:
The system merges automatic transfer switching functionality with power phase distribution and load balancing capabilities into a single integrated ATS system. This consolidation reduces overall complexity by eliminating the need for separate systems while maintaining all required functions.
Solution Approach 2:
The ATS system is designed as a multi-functional platform that handles power source switching, phase distribution, power monitoring, and dynamic load reassignment. This universal approach allows a single system to perform multiple critical functions that would otherwise require separate devices.
Data Source
AI summary
Examples of the disclosure include an automatic transfer switching system comprising a first input to receive phases of first power from a first source, a second input to receive phases of second power from a second source, a receptacle, a phase-selection interface (PSI) configured to receive the first power and output a first selected phase and receive the second power and output a second selected phase, a switching device coupled to the receptacle and the PSI, and at least one controller configured to control the switching device to couple the first input to the receptacle via the PSI to provide the first selected phase when the switching device decouples the second input from the receptacle, and to control the switching device to couple the second input to the receptacle via the PSI to provide the second selected phase when the switching device decouples the first input from the receptacle.