UPS CIRCUIT

摘要

A UPS circuit, comprising a rectification phase leg (PL1) for rectification, which is used for converting a received alternating current into a direct current; inversion phase legs (PL21, PL22, PL23) for inversion, which are used for inverting the direct current output by the rectification phase leg into an alternating current; a failure detection device (D) which is used for detecting whether an inversion phase leg has failed; a redundant inversion phase leg (PL2a), with an input end thereof being connected to an output end of the rectification phase leg; and a control device which is used for receiving a signal sent by the failure detection device and is also used for enabling the redundant inversion phase leg to replace the inversion phase leg which has failed when a failure occurs.

主权项

1. A UPS circuit, comprising:
a rectification phase leg; a first inversion phase leg; a failure detection device configured to detect and indicate a status of the first inversion phase leg; a second inversion phase leg, an input end of which is connected to an output end of the rectification phase leg; a control device configured to replace the first inversion phase leg with the second inversion phase leg responsive to the indicated status of the first inversion leg.