Digitally Controlled Switching Network for Uninterruptible Power Supply
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Solution Overview
Problem
Modern data centers face challenges in providing uninterrupted power to protected load devices, as existing PSU architectures lack efficient methods for monitoring power supply sources and switching between AC and DC power supplies to ensure continuous service.
Innovation Solution
The implementation of a power supply output configuration system that utilizes power condition sensing circuitry and a digitally controlled switching network to monitor and switch between primary and secondary power sources, ensuring seamless transitions within one to two AC phase cycles to maintain uninterrupted power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a digitally controlled switching network is implemented to switch between power sources, then the reliability of power supply is improved, but the device complexity increases
Solution Approach 1:
The system divides the power supply architecture into distinct segments: primary AC power source, secondary DC power source, and a digitally controlled switching network. This segmentation allows each component to be independently optimized and controlled, improving overall reliability while managing complexity through modular design.
Solution Approach 2:
A digitally controlled switching network acts as an intermediary between the dual power sources and the protected load devices. This intermediary component intelligently selects and switches between AC and DC sources based on availability and conditions, ensuring continuous power supply while centralizing the complexity in a manageable control system.
2Reliability
If power condition sensing circuitry is added to monitor power sources, then the reliability of power supply is improved, but the device complexity increases
Solution Approach 1:
Power condition sensing circuitry continuously monitors the status of both AC and DC power sources and provides feedback signals to the digitally controlled switching network. This feedback mechanism enables automatic detection of power failures or anomalies, allowing the system to proactively switch to alternative sources and maintain uninterrupted power supply.
3Reliability
If switching between power sources is performed rapidly within one to two AC phase cycles, then the reliability of power supply is improved, but the loss of time during transitions increases
Solution Approach 1:
The system performs preliminary monitoring and evaluation of both power sources before a failure occurs. The power condition sensing circuitry continuously assesses the health and availability of AC and DC sources, so when a switch is needed, the digitally controlled switching network can immediately transition to the pre-validated alternative source, minimizing transition time to within one to two AC phase cycles.
Data Source
AI summary
A power supply output configuration system/method providing a digitally controlled uninterruptable power supply (UPS) to protected load devices (PLD) configured as power supply units (PSU) serviced by one or more power supply sources (PSS) is disclosed. The system generally includes a number of power supply sources (PSS) that are monitored by power condition sensing (PCS) circuitry that determines individual power source states within the PSS. This physical state information is used by a digitally controlled switching network (DSN) that reconfigures the electrical connections between the PSS and the individual PLD elements to properly route power from the PSS to the PLD in the event of individual PSS failures. The DSN receives phase/voltage state information from the PSS to ensure that current between the PSS and PLD is transferred in a synchronized manner and that PSS resources are properly protected during the switching transition.