A new active power filter topology based on a chopper circuit

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Xiao-Ling Guo, Jian Cheng, Bo Zhang, Jing Zhang and Yuan Huang. A new active power filter topology based on a chopper circuit[J]. Chinese Physics C, 2016, 40(1): 017005. doi: 10.1088/1674-1137/40/1/017005
Xiao-Ling Guo, Jian Cheng, Bo Zhang, Jing Zhang and Yuan Huang. A new active power filter topology based on a chopper circuit[J]. Chinese Physics C, 2016, 40(1): 017005.  doi: 10.1088/1674-1137/40/1/017005 shu
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Received: 2015-04-03
Revised: 2015-08-28
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A new active power filter topology based on a chopper circuit

    Corresponding author: Xiao-Ling Guo,
    Corresponding author: Jian Cheng,
  • 1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • 2. Dongguan Neutron Science Center, Dongguan 523803, China
  • 3.  Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • 4.  BoXingKeYuan Electronic Technology Co., Ltd., Beijing 101300, China

Abstract: Active power filters (APFs) are widely used for their outstanding performance in current and voltage ripple compensation. As modern high-energy accelerators are demanding much more stringent current ripple guidelines, APFs are used in the magnet power supply (MPS) in accelerator systems. However, conventional APFs have many drawbacks due to the traditional topology, such as complex structure, nonadjustable working voltage, requirement of power supply, and so on. This paper proposes a new APF topology, which works as two types of chopper circuits. This APF does not need extra electricity, but uses the power of the MPS current ripple to realize ripple depression. Experimental results prove its feasibility and effectiveness.

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