Control strategy of inverse current sharing DC-DC converter based on anti disturbance observer

JING Zhe; MI Ke; ZHANG Haomiao; YANG Peihao; PAN Lehong

doi:10.19666/j.rlfd.202002038

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Control strategy of inverse current sharing DC-DC converter based on anti disturbance observer

更新时间：2025-09-28

- Control strategy of inverse current sharing DC-DC converter based on anti disturbance observer
- Thermal Power Generation Vol. 49, Issue 8, Pages: 71-77(2020)
- 作者机构：
  
  1. 国网宁夏电力有限公司银川供电公司
  2. 西安热工研究院有限公司
  3. 国网宁夏电力有限公司宁夏营销服务中心
  4. 华能铜川照金煤电公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202002038
  CLC： TM46
- Published Online：30 July 2020，
  
  Published：2020
- 稿件说明：
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JING Zhe, MI Ke, ZHANG Haomiao, et al. Control strategy of inverse current sharing DC-DC converter based on anti disturbance observer[J]. Thermal power generation, 2020, 49(8): 71-77.
DOI：

JING Zhe, MI Ke, ZHANG Haomiao, et al. Control strategy of inverse current sharing DC-DC converter based on anti disturbance observer[J]. Thermal power generation, 2020, 49(8): 71-77. DOI： 10.19666/j.rlfd.202002038.

摘要

传统光伏发电储能系统DC-DC变换电路采用同相均流控制策略

该策略无法抑制电流纹波。本文提出一种反相均流控制策略

并引入抗扰动观测器

通过建立基于抗扰动观测器的光伏发电储能系统两相并联DC-DC变换电路实验平台

分析比较两相电流独立控制、两相电流同相均流控制、两相电流反相均流控制3种控制策略

以及抗扰动观测器和未加抗扰动观测器储能单元总充电情况。实验结果表明

本文所提方案能够有效降低储能单元总充电电流纹波

并能够抑制光伏发电直流母线电压波动。

Abstract

In photovoltaic energy storage system

the conventional DC-DC converter adopts in-phase current sharing control strategy

which can not restrain the current ripple. In this paper

a reverse phase current sharing control strategy is proposed

and an anti disturbance observer is introduced. By building the experimental platform of two-phase parallel DC-DC converter of photovoltaic energy storage system based on anti disturbance observer

three control strategies

such as the two-phase current independent control

the two-phase current in-phase current sharing control and the two-phase current reverse phase current sharing control

are analyzed and compared.Moreover

the total charging situation of energy storage unit of the anti disturbance observer and non-anti disturbance observer are investigated. The experimental results show that

the scheme proposed in this paper can effectively reduce the ripple of the total charging current of the energy storage unit and suppress the voltage fluctuation of the DC bus of photovoltaic power generation.

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