Multi-Phase PDU Switching for Datacenter Load Balancing
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Solution Overview
Problem
Datacenters face challenges in distributing electric power from multi-phasic power sources to multiple servers due to load imbalance, which can lead to service interruptions or damage, as existing load balancing solutions are inadequate for the stringent requirements of electronic equipment.
Innovation Solution
A power distribution unit (PDU) with multi-way switching devices and a controller that monitors power consumption and adjusts phase distribution dynamically to balance electrical load, using zero-cross detection for seamless phase switching to maintain power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multi-phasic power sources are used to power multiple servers in datacenters, then power density and wiring efficiency are improved, but electrical load imbalance between phases occurs leading to service interruptions or equipment damage
Solution Approach 1:
The patent implements dynamic load balancing by continuously monitoring power consumption of each server and automatically switching phase assignments in real-time. The system adjusts the distribution of phases across servers dynamically based on current load conditions, preventing electrical imbalance from causing service interruptions while maintaining high power density utilization.
Solution Approach 2:
The system employs feedback mechanisms through power consumption monitoring of each server connected to the multi-phasic power source. This feedback information is used to detect phase imbalances and trigger automatic phase switching operations, ensuring that the power distribution remains balanced and reliable while maximizing the utilization of available power phases.
2Reliability
If phase switching is performed to balance electrical load, then load balancing is improved, but service interruptions may occur during switching transitions
Solution Approach 1:
The system performs preliminary monitoring and detection of power consumption patterns before executing phase switching operations. By anticipating when load balancing is needed and preparing switching actions in advance, the system can execute phase transitions more smoothly and minimize service interruption time while achieving the desired load balance.
Solution Approach 2:
The patent ensures continuous power supply during phase switching by implementing seamless transition mechanisms. The system maintains power delivery to servers throughout the switching process, eliminating gaps in service and ensuring that the useful action of powering servers continues uninterrupted even as phase assignments are adjusted for load balancing.
3Ease of operation
If existing load balancing solutions are used, then some load distribution is achieved, but they are inadequate for the stringent requirements of electronic equipment in datacenters
Solution Approach 1:
The patent replaces traditional manual or simple automatic load balancing mechanisms with an intelligent, automated phase switching system. This substitution implements sophisticated monitoring and control that specifically addresses the stringent requirements of datacenter electronic equipment, providing both ease of operation through automation and enhanced reliability through precise equipment protection measures.
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 PDU effectively reduces electrical imbalance, minimizing the risk of service interruptions and equipment damage by optimizing power distribution across phases, ensuring stable operation of electronic devices.
Implementation Method 1
the load balancing routine comprises determining an adjusted phase to be distributed to at least one of the plurality of power outlets by at least one multi-way switching device of the plurality of multi-way switching devices and causing the at least one multi-way switching device to switch to an adjusted switching state
Data Source
AI summary
System and method for distributing electric power from a multi-phasic power source to electronic devices, the electric power being carried by a plurality of phases. The method comprises distributing, via a plurality of multi-way switching devices, electric power from the power source to a plurality of electronic devices, each multi-way switching device corresponding to a given electronic device and being configured to distribute a present phase thereto, accessing information about power consumption of the electronic devices, determining, based on said information, a present degree of electrical imbalance of the power source, and in response to the present degree of electrical imbalance being greater than a threshold, executing a load balancing routine including determining an adjusted phase to be distributed to at least one of the electronic devices and causing the at least one multi-way switching device to switch to an adjusted switching state.