光储孤岛直流微电网混合模式平滑切换策略

潘豪; 王震; 康庄; 程鹏; 贾利民

doi:doi:10.19912/j.0254-0096.tynxb.2024-1671

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光储孤岛直流微电网混合模式平滑切换策略

更新时间：2026-02-06

- 光储孤岛直流微电网混合模式平滑切换策略
- 光储孤岛直流微电网混合模式平滑切换策略
- 太阳能学报 2026年47卷第1期页码：377-385
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：doi:10.19912/j.0254-0096.tynxb.2024-1671
  中图分类号： TM72
- 网络首发：2026-02-05，
  
  纸质出版：2026-02-05
- 稿件说明：
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潘豪, 王震, 康庄, 等. 光储孤岛直流微电网混合模式平滑切换策略[J]. 太阳能学报, 2026,47(1):377-385.

潘豪, 王震, 康庄, et al. 光储孤岛直流微电网混合模式平滑切换策略[J]. 2026, 47(1): 377-385.
潘豪, 王震, 康庄, 等. 光储孤岛直流微电网混合模式平滑切换策略[J]. 太阳能学报, 2026,47(1):377-385. DOI： doi:10.19912/j.0254-0096.tynxb.2024-1671.

潘豪, 王震, 康庄, et al. 光储孤岛直流微电网混合模式平滑切换策略[J]. 2026, 47(1): 377-385. DOI： doi:10.19912/j.0254-0096.tynxb.2024-1671.

摘要

该文针对光储孤岛直流微电网中光伏系统不同运行模式切换的平稳性及母线电压控制精度问题

提出一种自适应模式平滑切换策略。首先

提出计及时延补偿的母线电压二次调整方法

减少传输时延导致的母线电压补偿偏差。其次

设计基于变系数Sigmoid函数的加权平均策略

自适应调整参考电流和模式切换时间

确保光伏系统在下垂与MPPT两种模式之间的平滑切换效果

避免控制环路变化带来的系统参数突变。在加权平均策略的基础上

引入自适应指数趋近律滑模修正方法提升系统平滑切换效率与鲁棒性

并通过动态调整滑模趋近律参数减少系统切换过程中的抖振。最后

通过硬件在环实验平台验证所提策略的有效性

结果表明该策略在应对孤岛直流微电网模式切换及电压稳定方面具有良好表现。

Abstract

In this paper

an adaptive smooth switching strategy is proposed for PV-storage islanded DC microgrids （IDCMGs） to ensure smooth switching between different operating modes of PV systems and improve the accuracy of bus voltage control. Firstly

a secondary control-based bus voltage adjustment method with time delay compensation is proposed to mitigate the bus voltage deviation caused by transmission delays. Secondly

a weighted average strategy based on a variable-coefficient sigmoid function is designed to adaptively adjust the reference current and mode switching time

ensuring smooth switching of the PV system between droop and MPPT modes and avoiding abrupt changes in system parameters caused by changes in the control loop. Based on the weighted average strategy

an adaptive exponential reaching law sliding mode correction method is introduced to enhance the efficiency and robustness of smooth switching

and the parameters of the sliding mode reaching law are dynamically adjusted to suppress chattering during the switching process. Finally

the effectiveness of the proposed strategy is verified using a hardware-in-the-loop （HIL） experimental platform

and the results demonstrate that the strategy exhibits excellent performance in handling IDCMG mode switching and voltage stability.

关键词

Keywords

references

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