• 专利标题: METHOD AND APPARATUS TO SOLVE PFC CAPACITOR REDUCTION OF LINE AFLC RIPPLE WITHOUT PASSIVE FILTERS
  • 申请号: US15555079
    申请日: 2016-03-01
  • 公开(公告)号: US20180041034A1
    公开(公告)日: 2018-02-08
  • 发明人: Neal George StewartWing Ling CHENG
  • 申请人: Edge Electrons Limited
  • 国际申请: PCT/CN2016/075144 WO 20160301
  • 主分类号: H02J3/18
  • IPC分类号: H02J3/18 H04B3/54
METHOD AND APPARATUS TO SOLVE PFC CAPACITOR REDUCTION OF LINE AFLC RIPPLE WITHOUT PASSIVE FILTERS
摘要:
Audio Frequency Load Control (AFLC) signal processing electronics added to a power factor correction (PFC) unit allowing the AFLC system to operate without the need of large and heavy passive bypass or blocking filters at the PFC installations. The AFLC signal processing electronics a first group of additional electronics tuned to the AFLC frequency for detecting the AFLC carrier signal; and a second group of additional electronics for driving an AFLC impedance switch that is connected in parallel with an AFLC impedance. The AFLC impedance is connected in series with the PFC capacitors, and is sufficiently large to offer significant impedance in series with the PFC capacitors that allows the AFLC signal to bypass the PFC unit.
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