基于扰动微分补偿的微电网变换器级联型自抗扰稳压控制

李佳乐; 赵浛宇; 祁梦心; 崔皓添; 靳梦延; 周雪松

doi:10.19912/j.0254-0096.tynxb.2025-0735

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (9) : 555-566. DOI: 10.19912/j.0254-0096.tynxb.2025-0735

基于扰动微分补偿的微电网变换器级联型自抗扰稳压控制

李佳乐^1~3, 赵浛宇^1~3, 祁梦心^1~3, 崔皓添^1~3, 靳梦延^1~3, 周雪松^1~3

作者信息 +

CASCADED ACTIVE DISTURBANCE REJECTION VOLTAGE STABILIZING CONTROL OF MICROGRID CONVERTER BASED ON DISTURBANCE DIFFERENTIAL COMPENSATION

Li Jiale^1~3, Zhao Hanyu^1~3, Qi Mengxin^1~3, Cui Haotian^1~3, Jin Mengyan^1~3, Zhou Xuesong^1~3

Author information +

文章历史 +

摘要

针对直流微电网中低压负载接口变换器输出电压易受不确定性扰动影响的问题,提出一种基于扰动微分补偿与级联型扩张状态观测器的改进自抗扰控制策略,以更好地抑制低压负载接口变换器输出电压波动。该控制策略将扰动微分补偿与级联思想有机融合,不仅实现对扰动的精确重构,避免因过度放大观测器带宽而导致的系统振荡,且有效缓解跟踪性能与抗扰性能之间的耦合问题。之后,利用Lyapunov理论验证所提控制策略的稳定性,同时,在扰动估计性能、扰动抑制性能、耦合特性和鲁棒性能3个维度进行理论分析,以说明所提改进控制策略对于内扰和外扰均具有良好的抑制效果。最后,通过数字仿真实验验证所提改进控制策略的有效性。

Abstract

To address the issue of output voltage fluctuations in low-voltage load interface converters of DC microgrids caused by uncertain disturbances, an improved active disturbance rejection control （ADRC） strategy is proposed. This strategy integrates disturbance differential compensation with a cascaded extended state observer （ESO） to more effectively suppress voltage variations. By combining the disturbance differential compensation with the cascaded observer architecture, the proposed method achieves accurate disturbance reconstruction without excessively increasing the observer bandwidth, thereby avoiding system oscillation. Moreover, it alleviates the inherent coupling between tracking performance and disturbance rejection capability. The stability of the proposed control approach was proved based on Lyapunov stability theory. Meanwhile, theoretical analyses on disturbance estimation performance, disturbance rejection performance, coupling characteristics and robustness are carried out to illustrate that the proposed improved control strategy effectively suppresses both internal and external disturbances. Finally, numerical simulations validate the effectiveness and feasibility of the proposed improved control strategy.

导出引用

李佳乐, 赵浛宇, 祁梦心, 崔皓添, 靳梦延, 周雪松. 基于扰动微分补偿的微电网变换器级联型自抗扰稳压控制[J]. 太阳能学报. 2026, 47(9): 555-566 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0735

Li Jiale, Zhao Hanyu, Qi Mengxin, Cui Haotian, Jin Mengyan, Zhou Xuesong. CASCADED ACTIVE DISTURBANCE REJECTION VOLTAGE STABILIZING CONTROL OF MICROGRID CONVERTER BASED ON DISTURBANCE DIFFERENTIAL COMPENSATION[J]. Acta Energiae Solaris Sinica. 2026, 47(9): 555-566 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0735

中图分类号： TK513.5

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