Uninterruptible power supply, non-transitory computer readable medium, and power system

• Main Authors: HANSEN JACOB GREGERS, JOHANSEN JESPER HOUGAARD, BUDDE KRISTIAN
• Format: Patent
• Language: Chinese; English
• Published: 14.09.2021
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

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