A new shunt DC active filter of power supply in a steady high magnetic field facility

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WANG Lei, LIU Xiao-Ning and WANG Can. A new shunt DC active filter of power supply in a steady high magnetic field facility[J]. Chinese Physics C, 2011, 35(5): 494-499. doi: 10.1088/1674-1137/35/5/018
WANG Lei, LIU Xiao-Ning and WANG Can. A new shunt DC active filter of power supply in a steady high magnetic field facility[J]. Chinese Physics C, 2011, 35(5): 494-499.  doi: 10.1088/1674-1137/35/5/018 shu
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Received: 2010-07-06
Revised: 2010-09-28
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A new shunt DC active filter of power supply in a steady high magnetic field facility

Abstract: A DC active power filter is an indispensable part in a high power and high stability power supply system, especially in the power supply system of the Steady High Magnetic Field Facility, which requires that the current ripple should be limited to 50 parts per million. In view of the disadvantages of the series DC active power filter and shunt Pulse Width Modulation DC active filter, this paper puts forward a novel DC active filter by combining the advantages of the transistor regulator and the shunt type. The structure and principle of the new shunt linear active filter are introduced. Meanwhile, the design of several key components that construct the new shunt linear active filter is also analyzed. The simulation model and an experimental prototype of the shunt linear active filter are developed, and the results verify that the parameter design is reasonable and the shunt active filter has a good filter effect.

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