改进重复控制在低采样频率逆变器中的应用

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摘要针对低采样频率逆变器传统控制方法控制效果不理想的问题,提出采用分数相位超前补偿重复控制(FPLCRC)策略;在分析传统重复控制存在问题的基础上,给出相位超前补偿提高控制系统稳定性的原理,根据逆变器稳定性和稳态误差的要求,分别设计补偿环节的陷波器、低通滤波器和分数超前拍次,并采用拉格朗日插值方法予以实现;最后通过MATLAB/Simulink进行建模和分析,所搭建的逆变器实验平台验证了方法的正确性和可行性。

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	赵强松
	叶永强
	徐国峰
	竺明哲
	潘雪

关键词 ：低采样频率, 逆变器, 重复控制, 分数相位超前补偿, 拉格朗日插值

Abstract：For the less effectiveness of conventional control methods,this paper proposes the fractional phase lead compensation repetitive control (FPLCRC) scheme.At the basis of analyzing the problems of conventional repetitive control at low sampling frequency,the principle that phase lead compensation can improve the stability of inverter is provided.The notch filter,the low pass filter,and the fractional phase lead compensator are designed,respectively to meet the requirement of the inverter stability and the steady error.Fractional phase lead compensator can be implemented by Lagrange interpolation.MATLAB/Simulink is the model and simulation platform and an inverter experimental platform is used to validate the effectiveness of the proposed control strategy.

Key words： Low sampling frequency inverter repetitive control fractional phase lead compensation Lagrange interpolation

收稿日期: 2014-12-22 出版日期: 2015-10-21

PACS:

TM464

基金资助:国家自然科学基金(61473145)、中央高校基本科研业务费专项资金和江苏省研究生培养创新工程(KYLX_0279)、河南省高等学校重点科研项目计划(15A413020)资助

作者简介: 赵强松男,1982年生,博士研究生,研究方向为逆变器控制,重复控制理论。叶永强男,1972年生,教授,博士生导师,研究方向为电力电子控制及应用控制理论。(通信作者)

引用本文:

赵强松,叶永强,徐国峰,竺明哲,潘雪. 改进重复控制在低采样频率逆变器中的应用[J]. 电工技术学报, 2015, 30(19): 120-127. Zhao Qiangsong, Ye Yongqiang, Xu Guofeng, Zhu Mingzhe, Pan Xue. Application of Improved Repetitive Control Scheme to Inverter with Low Sampling Frequency. Transactions of China Electrotechnical Society, 2015, 30(19): 120-127.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2015/V30/I19/120

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