Patent ID: 11967859
Assignee: EATON INTELLIGENT POWER LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 4:
5. The on-line uninterruptible power supply according to claim 4, wherein the on-line uninterruptible power supply further comprises a control device,
wherein, when the plurality of bi-directional DC-DC converters are all operational, the control device turns on the sixth switch, the seventh switch, the eighth switch, and the ninth switch in each of the plurality of bi-directional DC-DC converters, and
wherein, when the plurality of bi-directional DC-DC converters include a failed bi-directional DC-DC converter, the control device turns off the sixth switch, the seventh switch, the eighth switch, and the ninth switch in the failed bi-directional DC-DC converter and turns on the sixth switches, seventh switches, eighth switches, and ninth switches in other operational bi-directional DC-DC converters.