Invention Grant
US08344706B2 System and method for rejecting DC current in power factor correction systems
有权
在功率因数校正系统中拒绝直流电流的系统和方法
- Patent Title: System and method for rejecting DC current in power factor correction systems
- Patent Title (中): 在功率因数校正系统中拒绝直流电流的系统和方法
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Application No.: US12852585Application Date: 2010-08-09
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Publication No.: US08344706B2Publication Date: 2013-01-01
- Inventor: Charles E. Green
- Applicant: Charles E. Green
- Applicant Address: US OH Sidney
- Assignee: Emerson Climate Technologies, Inc.
- Current Assignee: Emerson Climate Technologies, Inc.
- Current Assignee Address: US OH Sidney
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: G05F1/70
- IPC: G05F1/70 ; H02M5/45

Abstract:
A power factor correction (PFC) system includes a direct current (DC) module, an error control module, an offset module, and a duty cycle control module. The DC module determines an average current value based on a plurality of current values over at least one cycle of an input alternating current (AC) line signal of the PFC system. The error control module generates an error signal based on the average current value. The offset module offsets a desired instantaneous current based on the error signal. The duty cycle control module controls at least one duty cycle of switches of the PFC system based on the offset desired instantaneous current.
Public/Granted literature
- US20110031943A1 SYSTEM AND METHOD FOR REJECTING DC CURRENT IN POWER FACTOR CORRECTION SYSTEMS Public/Granted day:2011-02-10
Information query
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