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- 저자 : Mika Salo (검색결과 1 건)
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Multiloop Control Strategy for Four-Wire Current Source Active Power Filter
Sami Pettersson,Mika Salo,Heikki Tuusa 전력전자학회 2007 ICPE(ISPE)논문집 Vol.- No.-
Despite the fact that three-wire active power filters have been implemented using both voltage source and current source technology, the research of four-wire current source active power filters has been truly minimal. Only a few topologies have been presented over the years. This paper proposes a four-wire current source active power filter topology for improving the quality of supply in four-wire systems. The proposed topology is controlled using a multiloop control strategy suitable for a single-chip microcontroller implementation. The control strategy combines the load current feedforward connection and the cascaded closed-loop control of the supply currents and the capacitor voltages of the LC-type supply filter. By using the cascaded closed-loop control, the stability of the system can be achieved without the need to overdimension the supply filter. The performance of the proposed system is verified experimentally using a microcontroller controlled four-wire current source active power filter prototype rated for a 5 ㎸A load.
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