DC Voltage Control Strategy of Flexible Multi-state Switch with Disturbance Rejection

SHEN Cong; ZHANG Guorong; PENG Bo; XIE Runsheng; HOU Likai; DING Xiaotong

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DC Voltage Control Strategy of Flexible Multi-state Switch with Disturbance Rejection

更新时间：2025-12-08

- DC Voltage Control Strategy of Flexible Multi-state Switch with Disturbance Rejection
- Vol. 46, Issue 4, Pages: 1198-1205(2020)
- 作者机构：
  
  合肥工业大学电气与自动化工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：30 April 2020，
  
  Published：2020
- 稿件说明：
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SHEN Cong, ZHANG Guorong, PENG Bo, et al. DC Voltage Control Strategy of Flexible Multi-state Switch with Disturbance Rejection[J]. 2020, 46(4): 1198-1205.
DOI：

SHEN Cong, ZHANG Guorong, PENG Bo, et al. DC Voltage Control Strategy of Flexible Multi-state Switch with Disturbance Rejection[J]. 2020, 46(4): 1198-1205. DOI：

摘要

为抑制系统干扰对柔性多状态开关（flexiblemulti-stateswitch

FMSS）直流电压的影响

提出了一种基于改进型线性扩张状态观测器（linear extended state observer

LESO）的FMSS直流电压控制策略。首先

根据直流电压动态方程和系统变量间的非线性关系设计了直流电压控制外环;然后

采用将干扰观测值前馈的干扰抑制方案

通过选取新的误差函数和状态变量提出了一种用于干扰观测的改进型LESO;最后

根据直流电压响应函数设计了干扰前馈环节。仿真结果表明

在干扰下FMSS直流电压波动比采用经典LESO时减小50%

同时直流电压恢复稳定的时间缩短13%

端口输出有功超调减小42%。因此所提策略能够有效抑制系统干扰对FMSS直流电压的影响。

Abstract

To suppress the influence of system disturbance on the DC voltage of flexible multi-state switch（FMSS）

an FMSS DC voltage control strategy based on an improved linear extended state observer（LESO） is proposed. Firstly

the DC voltage control outer loop is designed according to the DC voltage dynamic equation and the nonlinear relationship between the system variables. Then

the disturbance rejection scheme with feed-forward of the disturbance observation value is adopted

and an improved LESO for disturbance observation is proposed by selecting new error function and state variables. Finally

the disturbance feed-forward link is designed according to the DC voltage response function. The simulation results show that the DC voltage fluctuation of FMSS is reduced by 50% compared to using the conventional LESO

the settling time of the DC voltage is reduced by 13%

and the overshoot of the terminal output active power is reduced by 42%. Therefore

the strategy proposed in this paper can effectively suppress the influence of system disturbance on the DC voltage of FMSS.

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