Uninterruptible power supply, non-transitory computer readable medium, and power system
The invention discloses an uninterruptible power supply, a non-transitory computer readable medium and a power system. The uninterruptible power supply comprises a first input end, a standby input end, an output end for providing output power, an inverter coupled with the first input end, the standb...
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Main Authors | , , |
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Format | Patent |
Language | Chinese English |
Published |
14.09.2021
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses an uninterruptible power supply, a non-transitory computer readable medium and a power system. The uninterruptible power supply comprises a first input end, a standby input end, an output end for providing output power, an inverter coupled with the first input end, the standby input end and the output end, a first sensor for detecting the voltage of the output end of the inverter, a second sensor for detecting the voltage of the first input end, and a bypass switch coupled with the first input end and the output end, a controller coupled to the bypass switch and the first and second sensors, the controller configured to determine a first voltage difference across the bypass switch using at least one of the first and second sensors; applying a high-pass filter to the first voltage difference to obtain a first filtered voltage difference; determining whether the value obtained by the first filtering voltage difference exceeds a threshold value or not; and outputting a fault indication of |
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Bibliography: | Application Number: CN202110263578 |