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{"title":"Improved ADRC Current Low-Frequency Ripple Suppression Strategy Based on VFNF","authors":"Yiyang Liu, Weichao Li, Liang Zhou, Jinyang Han, Zhennan Yang, XiangLin Zhao","doi":"10.1002/tee.24115","DOIUrl":null,"url":null,"abstract":"<p>In the two-stage inverter system, due to the space vector modulation (SVM), the midpoint potential of active neutral point clamped three-level inverter system (ANPC-TLIS) will have triple frequency fluctuation, under the influence of the closed-loop control strategy, the fluctuation amplitude of the lithium battery energy storage system (LBESS) output current will increase. To reduce the low-frequency output current fluctuation, a voltage loop strategy based on active disturbance rejection control (ADRC) with notch filter (NF)is proposed in this paper. In this scheme, the voltage outer-loop control strategy not only maintains voltage stability, but also reduces the fluctuation amplitude of reference current. In addition, during the electromagnetic transient process, the LBESS output current fluctuation frequency is constantly changing because the power supply frequency required by linear motor is constantly changing. To solve this problem, the inverter output current frequency is feedforward to the LBESS controller, forming a variable frequency notch filter (VFNF). Finally, the effectiveness of the proposed strategy is verified by fixed-frequency and variable frequency conditions experiments on RT-LAB experimental platform. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.</p>","PeriodicalId":13435,"journal":{"name":"IEEJ Transactions on Electrical and Electronic Engineering","volume":"19 9","pages":"1561-1572"},"PeriodicalIF":1.0000,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEJ Transactions on Electrical and Electronic Engineering","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/tee.24115","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
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Abstract
In the two-stage inverter system, due to the space vector modulation (SVM), the midpoint potential of active neutral point clamped three-level inverter system (ANPC-TLIS) will have triple frequency fluctuation, under the influence of the closed-loop control strategy, the fluctuation amplitude of the lithium battery energy storage system (LBESS) output current will increase. To reduce the low-frequency output current fluctuation, a voltage loop strategy based on active disturbance rejection control (ADRC) with notch filter (NF)is proposed in this paper. In this scheme, the voltage outer-loop control strategy not only maintains voltage stability, but also reduces the fluctuation amplitude of reference current. In addition, during the electromagnetic transient process, the LBESS output current fluctuation frequency is constantly changing because the power supply frequency required by linear motor is constantly changing. To solve this problem, the inverter output current frequency is feedforward to the LBESS controller, forming a variable frequency notch filter (VFNF). Finally, the effectiveness of the proposed strategy is verified by fixed-frequency and variable frequency conditions experiments on RT-LAB experimental platform. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.
基于 VFNF 的改进型 ADRC 电流低频纹波抑制策略
在两级逆变器系统中,由于空间矢量调制(SVM)的作用,有源中性点箝位三电平逆变器系统(ANPC-TLIS)的中点电位会产生三倍频率波动,在闭环控制策略的影响下,锂电池储能系统(LBESS)输出电流的波动幅度会增大。为了降低低频输出电流波动,本文提出了一种基于主动干扰抑制控制(ADRC)和陷波滤波器(NF)的电压环策略。在该方案中,电压外环控制策略不仅能保持电压稳定,还能降低参考电流的波动幅度。此外,在电磁暂态过程中,由于直线电机所需的电源频率不断变化,LBESS 输出电流波动频率也在不断变化。为解决这一问题,逆变器输出电流频率被前馈到 LBESS 控制器,形成一个变频陷波滤波器(VFNF)。最后,在 RT-LAB 实验平台上通过定频和变频条件实验验证了所提策略的有效性。© 2024 日本电气工程师学会和 Wiley Periodicals LLC。
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