| 引用本文: | 庄华,周林,张代红.基于单周控制的四桥臂三相四线制有源电力滤波器的研究[J].电力系统保护与控制,2007,35(24):36-39,25. |
| ZHUANG Hua,ZHOU Lin,ZHANG Dai-hong.Study on one-cycle controlled three-phase four-wire active power filter with four-leg[J].Power System Protection and Control,2007,35(24):36-39,25 |
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| 摘要: |
| 为了将单周控制方法用于三相四线制系统，本文提出将四桥臂三相四线制有源电力滤波器的主电路分为三相桥和N相半桥两个独立的子电路，并分别对其采用单周控制。三相桥的单周控制方程及控制电路与三相三线系统相同；通过对电路的分析着重推出了N相半桥电路的单周控制方程和控制电路。最后进行了整体电路的仿真研究。仿真结果表明：采用该方法电路简单，不仅可以有效地补偿系统的三相谐波电流，还可以补偿中线电流，在三相四线制系统中有一定的应用前景。 |
| 关键词: 有源电力滤波器 单周控制 三相四线制 子电路 N相半桥 |
| DOI：10.7667/j.issn.1674-3415.2007.24.009 |
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| Study on one-cycle controlled three-phase four-wire active power filter with four-leg |
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ZHUANG Hua1, ZHOU Lin2, ZHANG Dai-hong3
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1.Changzhou Institute of Technology, Changzhou 213002, China;2.Chongqing University, Chongqing 400030,China;3.Hengchuang Electric Power Design Institute Ltd, Jiaxing 314033,China
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| Abstract: |
| In order to use one-cycle control method in three-phase four-wire power system, this paper partitions the main circuit of three-phase four-wire APF with four-leg into two sub-circuits, including three-phase bridge circuit and N-phase half-bridge circuit which are based on one-cycle control independently. The one-cycle control equation and control circuit in three-phase bridge is similar to the three-phase three-wire system, the control equation and control circuit in N-phase half-bridge is mainly set up through analysis to the circuit. After that, the simulation of overall circuit is used to validate the scheme. The simulation results verify the control circuit is very simple, and can compensate the neutral current as well as three-phase harmonic and reactive currents effectively. So this control method should have a good application in three-phase four-wire systems. |
| Key words: active power filter one-cycle control three-phase four-wire sub-circuit N-phase half-bridge circuit |
