基于反演控制的DC-MMC双闭环解耦控制策略研究

马文忠; 赵雨; 张彦; 张奎同; 韩嘉; 王昕睿; 王嘉星

doi:10.19912/j.0254-0096.tynxb.2021-0831

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太阳能学报 ›› 2023, Vol. 44 ›› Issue (1) : 485-492. DOI: 10.19912/j.0254-0096.tynxb.2021-0831

基于反演控制的DC-MMC双闭环解耦控制策略研究

马文忠¹, 赵雨¹, 张彦², 张奎同², 韩嘉², 王昕睿¹, 王嘉星¹

作者信息 +

DOUBLE CLOSED-LOOP DECOUPLING CONTROL OF DC-MMC BASED ON BACKSTEPPING CONTROL

Ma Wenzhong¹, Zhao Yu¹, Zhang Yan², Zhang Kuitong², Han Jia², Wang Xinrui¹, Wang Jiaxing¹

Author information +

文章历史 +

摘要

随着大量分布式电源投入电网,分压式模块化多电平直流变换器（DC-MMC）得到广泛应用。针对模块化多电平变换器控制系统多输入多输出、强耦合非线性的特点,推导变换器拓扑数学模型,建立此类拓扑的电流和能量模型,提出一种基于反演控制的双闭环解耦控制方法。通过消除系统之间的耦合,采用模型反演理论对所建解耦模型进行控制,实现桥臂电流保持稳定并交流分量最小化,增强系统的抗扰动能力。在Matlab/Simulink中搭建DC-MMC双闭环模型,分析表明闭环控制模型具有良好的跟踪效果和调控特性,验证了提出的控制策略控制桥臂电流及高低压侧电流的可行性和有效性,为解耦控制的应用提供了参考依据。

Abstract

With a large number of distributed power supplies put into the grid, divided-voltage DCmodular multilevel converter （DC-MMC） has been widely used. Based on the characteristics ofmultiple input, multiple output, strong coupling and nonlinear of modular multilevel converter system, a converter topology mathematical model is deduced, a current and energy topology model is established, and a double closed-loop decoupling control method based on backstepping of control is proposed in this paper.By eliminating the decoupling in the system, the model backstepping theory is adopted to control the decoupling model. The current of the bridge arm is kept stable and the AC component is minimized to enhance the anti-disturbance ability of the system.The DC-MMC double closed-loop model is built in Matlab/Simulink. The results show that the closed-loop control model has good tracking effect and regulation characteristics, which verifies the feasibility and effectiveness of the proposed control strategy when controlling the current of the bridge arm and the current of the high and low voltage sides, providing a reference for the application of decoupling control.

导出引用

马文忠, 赵雨, 张彦, 张奎同, 韩嘉, 王昕睿, 王嘉星. 基于反演控制的DC-MMC双闭环解耦控制策略研究[J]. 太阳能学报. 2023, 44(1): 485-492 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0831

Ma Wenzhong, Zhao Yu, Zhang Yan, Zhang Kuitong, Han Jia, Wang Xinrui, Wang Jiaxing. DOUBLE CLOSED-LOOP DECOUPLING CONTROL OF DC-MMC BASED ON BACKSTEPPING CONTROL[J]. Acta Energiae Solaris Sinica. 2023, 44(1): 485-492 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0831

中图分类号： TM423

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