| 引用本文: | 黄海宏,江念涛,黄楠楠,王海欣.三电平有源电力滤波器死区效应分析与补偿[J].电力自动化设备,2017,37(11): |
| HUANG Haihong,JIANG Niantao,HUANG Nannan,WANG Haixin.Analysis and compensation of dead-time effect of three-level active power filter[J].Electric Power Automation Equipment,2017,37(11): |
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| 摘要: |
| 针对有源电力滤波器(APF)的死区效应问题，在三电平APF等效开关电路的基础上，从死区效应生成原理出发，结合三电平开关状态方程，推导出死区时间与电流跟踪误差之间的线性关系，阐释了死区时间带来的影响。提出了一种死区补偿方法，给出了补偿方法的控制原理图，并从控制系统的闭环特性角度分析了系统的性能。对比了无死区系统与死区补偿系统的性能，发现后者具有更好的稳态性能。通过仿真和实验结果表明所提方法能有效抑制死区效应。 |
| 关键词: 三电平有源电力滤波器 死区效应 状态方程 跟踪误差 闭环特性 有源滤波器 |
| DOI：10.16081/j.issn.1006-6047.2017.11.016 |
| 分类号:TN713 |
| 基金项目:国家自然科学基金资助项目(51177037) |
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| Analysis and compensation of dead-time effect of three-level active power filter |
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HUANG Haihong, JIANG Niantao, HUANG Nannan, WANG Haixin
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School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
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| Abstract: |
| In view of the dead-time effect of APF(Active Power Filter),the generation principle of the dead-time effect is analyzed on the basis of three-level switching state equations and three-level APF equivalent switching circuit. The linear relationship between the dead-time and the current tracking error is derived, and the effect of dead-time is illustrated. A dead-time compensation approach is proposed, and its control principle diagram is given. The performance of the system is analyzed in aspects of closed-loop characteristics. Comparisons between the system with and without dead-time compensation indicate that with dead-time compensation, the system has better steady state performance. Simulative and experimental results demonstrate that the proposed method can effectively suppress the dead-time effect. |
| Key words: three-level active power filter dead-time effect state equation tracking error closed-loop characteristic active filters |
