DC Side Voltage Ripple Suppression Strategy on Flexible Multi-state Switch

ZHANG Guorong; GUI Hongming; PENG Bo; ZHOU Ziqiang; LU Yi; WANG Chaoliang

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DC Side Voltage Ripple Suppression Strategy on Flexible Multi-state Switch

更新时间：2025-12-08

- DC Side Voltage Ripple Suppression Strategy on Flexible Multi-state Switch
- Vol. 46, Issue 4, Pages: 1133-1141(2020)
- 作者机构：
  
  1. 合肥工业大学电气与自动化学院
  2. 国网浙江省电力有限公司电力科学研究院
- 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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ZHANG Guorong, GUI Hongming, PENG Bo, et al. DC Side Voltage Ripple Suppression Strategy on Flexible Multi-state Switch[J]. 2020, 46(4): 1133-1141.
DOI：

ZHANG Guorong, GUI Hongming, PENG Bo, et al. DC Side Voltage Ripple Suppression Strategy on Flexible Multi-state Switch[J]. 2020, 46(4): 1133-1141. DOI：

摘要

柔性多状态开关是由多端共直流母线变流器组成的新型馈线互联电力装置

而电网电压不平衡时柔性多状态开关直流母线电压产生的波动

会严重影响其正常运行和设备的使用寿命。为此

分析了直流侧电压波动原理

提出了一种新的正负序双环直流侧电压控制策略。正序采用功率前馈控制稳定直流电压稳态误差

负序采用单正弦信号谐振反馈控制以抑制直流电压周期性波动。最后搭建了仿真平台

对不同情况下的直流侧电压波动进行了仿真实验

仿真结果验证了所提方案的有效性。该策略能有效地抑制柔性多状态开关在多端口同时不平衡下的直流侧电压的纹波

输出电流无谐波电流且电流峰值被限定在额定范围内。

Abstract

The flexible multi-state switch（FMSS） is a new type of feeder interconnection power device

which is composed of the multi-terminal common DC bus converter. When the grid voltage is unbalanced

the fluctuation of DC voltage of the FMSS will seriously affect its normal operation and the service life of the device. After analyzing the principle of DC-side voltage fluctuation

a new dual-loop DC-side voltage control strategy is proposed to solve this problem. The positive-sequence loop uses power feedforward control to stabilize the DC voltage steady-state error

and the negative-sequence loop uses the single sinusoidal signal resonance feedback control to suppress periodic ripple of DC voltage. Finally

a simulation platform is built to simulate the DC-side voltage fluctuation under different conditions. The simulation results verify the effectiveness of the proposed scheme. This strategy can effectively suppress the ripple of the DC side voltage of the flexible multi-state switch under multi-port simultaneous unbalance

the output current has no harmonic current

and the current peak is limited to the rated range.

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Related Author

XU Feng

WANG Chaoliang

JIANG Quanyuan

GENG Guangchao

ZHANG Jin

SUN Jianjun

KONG Li

PEI Wei

Related Institution

State Grid Zhejiang Electric Power Co., Ltd.Research Institute

College of Electrical Engineering, Zhejiang University

School of Electrical Engineering and Automation, Wuhan University

University of Chinese Academy of Sciences

Institute of Electrical Engineering, Chinese Academy of Sciences

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