Automatic Transfer Switching in Power Supplies for Redundant Input Reliability
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Solution Overview
Problem
The dual redundant power supply mode requires two sets of power supply devices, leading to a higher cost without an effective solution in existing technologies.
Innovation Solution
A power supply device with an automatic transfer switch that connects either input power supply to a power factor correction circuit and a DC-DC converter, allowing for automatic switching between power supplies and reducing the need for dual redundant setups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dual redundant power supply mode is adopted with two sets of power supply devices, then reliability of powering is improved, but cost increases
Solution Approach 1:
The patent merges two separate power supply devices into a single integrated device that can automatically switch between two input power sources. The automatic transfer switch combines the functionality of two power supply devices, allowing one device to serve dual purposes - accepting input from either power source while maintaining the reliability benefits of redundancy.
Solution Approach 2:
The single power supply device is designed with multi-functionality to handle both input power sources through the automatic transfer switch. The device can universally accept power from either the first or second input power supply, eliminating the need for separate dedicated power supply devices for each source while maintaining reliability.
2Reliability
If dual redundant power supply mode is adopted with two sets of power supply devices, then reliability of powering is improved, but device complexity increases
Solution Approach 1:
The patent merges two separate power supply devices into a single integrated device that can automatically switch between two input power sources. The automatic transfer switch combines the functionality of two power supply devices, allowing one device to serve dual purposes - accepting input from either power supply while maintaining the reliability benefits of redundancy.
Solution Approach 2:
The automatic transfer switch acts as an intermediary component that manages the complexity of handling two power sources. It mediates between the two input power supplies and the power factor correction circuit, automatically selecting the appropriate source without requiring complex control logic in the main power supply device.
3Extent of automation
If automatic transfer switch is implemented, then switching between power supplies is automated, but device complexity increases
Solution Approach 1:
The automatic transfer switch acts as an intermediary component that manages the complexity of handling two power sources. It mediates between the two input power supplies and the power factor correction circuit, automatically selecting the appropriate source without requiring complex control logic in the main power supply device.
Solution Approach 2:
The power supply system is segmented into distinct functional modules: the automatic transfer switch for source selection, the power factor correction circuit for power quality management, and the DC-DC converter for voltage conversion. This segmentation isolates the automation complexity to a dedicated component rather than distributing it throughout the entire system.
Data Source
AI summary
A power supply device and a control method for the same are disclosed. The method comprises: controlling, when there is the abnormal situation in the first input power supply, a first access point of a first relay and a third access point of the first relay to be disconnected, a second access point of the first relay and a fourth access point of the first relay to be disconnected, a common access point of a third relay and a second access point of the third relay to be connected, a common access point of a fourth relay and a second access point of the fourth relay to be connected, a first access point of a second relay and a third access point of the second relay to be connected, and a second access point of the second relay and a fourth access point of the second relay to be connected.