| 引用本文: | 张国荣,李奉顺,蒋继勇.基于电感电流和重复预测的APF数字电流控制策略[J].电力自动化设备,2018,(6): |
| ZHANG Guorong,LI Fengshun,JIANG Jiyong.Digital current control of APF based on inductance current and repetitive predictor[J].Electric Power Automation Equipment,2018,(6): |
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| 摘要: |
| 电流控制策略对有源电力滤波器的补偿精度有很大影响。针对传统电流控制器设计复杂、效果不佳等问题，提出一种基于电感电流和重复预测的数字电流控制策略。以输出滤波电感电流为研究对象，采用基于外推法的重复预测器实现对下一拍输出指令电流的准确预测，采用分割求和算法，将一个开关周期划分为3个时间间隔，通过求和得到3个时间间隔内滤波电感电流的总变化量来直接获取电压矢量作用时间。该电流控制策略具有计算简单、稳态性能好、动态响应快等优点。仿真结果验证了其有效性。 |
| 关键词: 有源电力滤波器 电感电流 重复预测 分割求和 电流控制 |
| DOI：10.16081/j.issn.1006-6047.2018.06.028 |
| 分类号:TN713 |
| 基金项目:国家高技术研究发展计划(863计划)资助项目(2015AA050104)；广东省引进创新科研团队计划资助项目(2011N015) |
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| Digital current control of APF based on inductance current and repetitive predictor |
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ZHANG Guorong1, LI Fengshun1, JIANG Jiyong2
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1.School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China;2.State Grid Anhui Zhongxing Electric Power Design Institute Co.,Ltd.,Hefei 230022, China
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| Abstract: |
| Current control strategy has a great influence on the compensation accuracy of APF(Active Power Filter). Due to the disadvantages of designed complexity and ineffective of the conventional current controller, a digital current control strategy based on the inductance current and repetitive predictor is presented. It takes the output filter inductance current as the object, achieving accurate prediction of the next shot of command current by using repetitive predictor based on extrapolation. A division-summation algorithm is adopted, dividing one switch period into three time intervals and then summarizing all of the individual inductance current variations to obtain the voltage vector action time. The current control strategy has advantages of simple calculation, good steady-state performance and fast dynamic response. The simulative results confirm its validity. |
| Key words: active power filter inductance current repetitive predictor division-summation electric current control |
