UPS Bypass Mode Switch Tube Frequency Control
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Solution Overview
Problem
Existing uninterruptible power supplies (UPS) in ECO mode still consume energy even when in a standby state, hindering efficiency improvements.
Innovation Solution
Switching the UPS to a bypass working mode and adjusting the working frequency of switch tubes in the main loop to a lower frequency, and strategically enabling or disabling rectifier, discharging, and charger circuits based on voltage thresholds to minimize power loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the UPS works in ECO mode with the main part in standby state, then the consumed electric energy is reduced, but certain energy is still consumed by the standby components
Solution Approach 1:
The patent applies dynamics by making the working frequency of switch tubes adjustable rather than fixed. When in bypass working mode, the control module dynamically lowers the working frequency of switch tubes in the main loop from a first frequency to a second frequency, reducing power consumption while maintaining standby readiness. This dynamic adjustment resolves the contradiction between energy saving and reliability.
Solution Approach 2:
The patent changes the working frequency parameter of switch tubes based on the working mode. In bypass working mode, the frequency is changed from a higher first frequency to a lower second frequency to reduce power loss. This parameter change allows the system to consume less energy while remaining in standby state, resolving the contradiction between power loss and standby readiness.
2Loss of energy
If the working frequency of switch tubes is reduced to lower power loss, then the efficiency is improved, but the response speed may be affected
Solution Approach 1:
The system dynamically adjusts the working frequency based on the working mode. When switching from main loop working mode to bypass working mode, the frequency is lowered to reduce power loss. The control module ensures that this frequency change does not adversely affect the response speed when switching back to main loop mode, as the frequency can be quickly adjusted back to the higher first frequency.
Solution Approach 2:
The patent implements periodic adjustment of working frequency according to the working mode requirements. The frequency oscillates between first frequency (main loop mode) and second frequency (bypass mode), allowing the system to achieve low power loss during bypass mode while maintaining high response capability when switching back to main loop mode.
Data Source
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AI summary
The present invention provides an uninterruptible power supplying method and an uninterruptible power supply. The method includes: switching an uninterruptible power supply to a bypass working mode from a main loop working mode, so as to provide mains power for a load through a bypass; determining the working mode of the uninterruptible power supply; and when the uninterruptible power supply is in the bypass working mode, adjusting a working frequency of at least one switch tube in a main loop of the uninterruptible power supply to a second frequency from a first frequency, where the second frequency is less than the first frequency, so as to reduce power loss when the uninterruptible power supply is in the bypass working mode. According to embodiments of the present invention, when the uninterruptible power supply is switched to run in the bypass, the working frequency of the switch tube in the main loop of the uninterruptible power supply can decrease, thereby reducing working loss of the uninterruptible power supply and effectively improving working efficiency of the uninterruptible power supply.