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

Claim 0:
1. A power factor correction assembly, comprising:
a plurality of power factor correction circuits, each comprising a pulse width modulated rectifier and an isolated DC-DC converter having an input connected to an output of the pulse width modulated rectifier, wherein inputs of the pulse width modulated rectifiers of the plurality of power factor correction circuits are connected in series, and wherein outputs of the isolated DC-DC converters of the plurality of power factor correction circuits are connected in parallel, and wherein each of the power factor correction circuits further comprises a first fuse and a second fuse connected to the input of the pulse width modulated rectifier, a third fuse and a fourth fuse connected to the output of the isolated DC-DC converter, and a first switch, a second switch, a third switch, and a fourth switch connected in series with the first fuse, the second fuse, the third fuse, and the fourth fuse, respectively;
fifth switches connected between inputs of the power factor correction circuits; and
a control device, wherein:
when the plurality of power factor correction circuits are all operational, the control device turns on the first switch, the second switch, the third switch, and the fourth switch in each of the power factor correction circuits and turns off the fifth switches; and
when at least one of the plurality of power factor correction has failed, the control device turns on the fifth switch connected to the input of the at least one failed power factor correction circuit turns off the first switch, the second switch, the third switch, and the fourth switch in the at least one failed power factor correction circuit, and turns on the first switches, second switches, third switches, and fourth switches in operational ones of the plurality of power factor correction circuits and turns off the fifth switches connected to the inputs of the operational ones of the plurality of power factor correction circuits.