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公开(公告)号：US11967859B2
公开(公告)日：2024-04-23
申请号：US17299730
申请日：2019-12-03
Applicant: Eaton Intelligent Power Limited
Inventor： Cheng Luo , Huiting Xin , Han Li , Dawei Zheng , Hualiang Li
CPC classification number: H02J9/062 , H02M1/007 , H02M1/4233 , H02M3/33571 , H02M3/33573 , H02M3/33584
Abstract: The present invention provides a power factor correction circuit (21, 22), a power factor correction assembly (2) and an on-line uninterruptible power supply including the same. The power factor correction circuit (21) comprises a pulse width modulated rectifier (211, 221) and an isolated DC-DC converter (212, 222), wherein an output of the pulse width modulated rectifier (211, 221) is connected to an input of the isolated DC-DC converter (212, 222). The power factor correction assembly (2) comprises a plurality of power factor correction circuits (21, 22) described above, wherein inputs of pulse width modulated rectifiers (211, 221) in the plurality of power factor correction circuits (21, 22) are connected in series, and outputs of isolated DC-DC converters (212, 222) in the plurality of power factor correction circuits (21, 22) are connected in parallel. The power factor correction assembly (2) of the present invention needs no line-frequency transformer and has the advantages of small size, low cost and improved operation reliability.
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2.发明公开公开(公告)号：US20240235251A1
公开(公告)日：2024-07-11
申请号：US18613225
申请日：2024-03-22
Applicant: Eaton Intelligent Power Limited
Inventor： Cheng Luo , Huiting Xin , Han Li , Dawei Zheng , Hualiang Li
CPC classification number: H02J9/062 , H02M1/007 , H02M1/4233 , H02M3/33571 , H02M3/33573 , H02M3/33584
Abstract: The present invention provides a power factor correction circuit, a power factor correction assembly and an on-line uninterruptible power supply including the same. The power factor correction circuit comprises a pulse width modulated rectifier and an isolated DC-DC converter, wherein an output of the pulse width modulated rectifier is connected to an input of the isolated DC-DC converter. The power factor correction assembly comprises a plurality of power factor correction circuits described above, wherein inputs of pulse width modulated rectifiers in the plurality of power factor correction circuits are connected in series, and outputs of isolated DC-DC converters in the plurality of power factor correction circuits are connected in parallel. The power factor correction assembly of the present invention needs no line-frequency transformer and has the advantages of small size, low cost and improved operation reliability.
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公开(公告)号：US20220021298A1
公开(公告)日：2022-01-20
申请号：US17299730
申请日：2019-12-03
Applicant: Eaton Intelligent Power Limited
Inventor： Cheng Luo , Huiting Xin , Han Li , Dawei Zheng , Hualiang Li
Abstract: The present invention provides a power factor correction circuit (21, 22), a power factor correction assembly (2) and an on-line uninterruptible power supply including the same. The power factor correction circuit (21) comprises a pulse width modulated rectifier (211, 221) and an isolated DC-DC converter (212, 222), wherein an output of the pulse width modulated rectifier (211, 221) is connected to an input of the isolated DC-DC converter (212, 222). The power factor correction assembly (2) comprises a plurality of power factor correction circuits (21, 22) described above, wherein inputs of pulse width modulated rectifiers (211, 221) in the plurality of power factor correction circuits (21, 22) are connected in series, and outputs of isolated DC-DC converters (212, 222) in the plurality of power factor correction circuits (21, 22) are connected in parallel. The power factor correction assembly (2) of the present invention needs no line-frequency transformer and has the advantages of small size, low cost and improved operation reliability.
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