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应用科学学报 >

2019 , Vol. 37 >Issue 4: 447 - 458

DOI: https://doi.org/10.3969/j.issn.0255-8297.2019.04.002

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基于LCL滤波器的复合控制策略

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  • 1. 华北理工大学 机械工程学院, 河北 唐山 063210;
    2. 华北理工大学 理学院, 河北 唐山 063210;
    3. 华北理工大学 电气工程学院, 河北 唐山 063210;
    4. 唐山市拓又达科技有限公司, 河北 唐山 063020
玄兆燕,教授,研究方向:电力电子技术、逆变器技术,E-mail:1455194609@qq.com

收稿日期: 2018-09-29

  修回日期: 2018-12-20

  网络出版日期: 2019-10-11

基金资助

河北省国际科技合作项目基金（No.16394301D）资助

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Compound Control Strategy Based on LCL Filter

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  • 1. College of Mechanical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei Province, China;
    2. College of Science, North China University of Science and Technology, Tangshan 063210, Hebei Province, China;
    3. College of Electrical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei Province, China;
    4. Tangshan Toyoda Science and Technology co., Ltd Tangshan, Tangshan 063020, Hebei Province, China

Received date: 2018-09-29

  Revised date: 2018-12-20

  Online published: 2019-10-11

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摘要

对于LCL型并网逆变器，若直接采用比例积分（proportional integral，PI）和重复控制串联或者并联控制策略，则在动态补偿时会出现系统控制器相互干扰的问题.为此，设计了并网逆变器串并联复合控制策略，将PI控制动态响应快、准比例谐振（quasi-proportionalresonance，QPR）抗干扰能力强与重复控制稳态精度高等优点相结合.动态时，由PI控制器迅速跟踪误差；稳态时，由重复控制器和QPR控制器来实现整个系统的无静差控制.此外，详细分析了各个控制器的设计原理并建立各个控制器的Matlab仿真模型.结果表明，采用串并联复合控制结构具有更快的动态响应速度和更高的稳态补偿性能.

关键词： 比例积分控制; 重复控制; 准比例谐振控制; 串并联复合控制; 陷波滤波器

本文引用格式

玄兆燕, 贾万泳, 陈学斌, 景会成, 赵欣, 马振宇 . 基于LCL滤波器的复合控制策略[J]. 应用科学学报, 2019 , 37(4) : 447 -458 . DOI: 10.3969/j.issn.0255-8297.2019.04.002

Abstract

LCL type grid-connected inverters, when directly adopting the proportionalintegral (PI) and repetitive control series or parallel control strategies, generally suffer the problem of controllers interfering with each other. To overcome the problem, we propose a series-parallel composite control strategy for grid-connected inverters in this paper. This strategy combines the dynamic response of PI control with strong anti-interference ability of quasi-proportional resonance (QPR) and high steady-state accuracy of repeating control. The PI controller performs fast error-tracking dynamic state, whereas in steady state, no static error compensation is required by using repeating control and QPR. The design principle of each controller is analyzed in detail, and the Matlab simulation model of each controller is established. Simulation results show that the series-parallel composite control scheme has better dynamic response speed and steady-state compensation performance.

Key words： proportional-integral (PI) control; repetitive control; quasi-proportional resonance (QPR) control; series-shunt compound control; notch filter

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