交直流混合微电网中储能变流器无缝切换策略

BI Daqiang

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交直流混合微电网中储能变流器无缝切换策略

更新时间：2025-08-13

- 交直流混合微电网中储能变流器无缝切换策略
- Automation of Electric Power Systems Vol. 40, Issue 10, Pages: 84-89(2016)
- 作者机构：
  
  清华大学电机工程与应用电子技术系,北京市,100084
- 作者简介：
- 基金信息：
- DOI：
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- Published：2016
- 稿件说明：
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BI Daqiang. [J]. Automation of electric power systems, 2016, 40(10): 84-89.
DOI：

BI Daqiang. [J]. Automation of electric power systems, 2016, 40(10): 84-89. DOI：

摘要

设计了一种交直流混合微电网结构，分析了储能变流器在该微电网平台结构中的作用，重点研究了并网切换孤岛、孤岛切换并网的过程。针对不同工况互相切换过程中存在的问题，提出了储能变流器无缝切换策略，包含并网切换孤岛过程补偿算法与孤岛切换并网过程预同步方法。实现了两种工作模式间的无缝切换，变流器输出电压电流平滑过渡。仿真与实验结果验证了所提方法的有效性与可靠性。

Abstract

A hybrid AC/DC microgrid structure is designed

and the role of the energy storage converter in this microgrid is analyzed. The switchings between grid-connected and island modes are the focus of attention. For problems in the transition between different working conditions

the seamless switching control strategy is proposed for the energy storage converter

including the compensation algorithm for the transient process during grid-connected mode transition to the island mode

and the pre-synchronization method for the transient process during the island mode transition to the grid-connected mode. Use of the control method proposed makes it possible to achieve seamless switching between the two working conditions above

and the converter output voltage and current are smooth and impact-free during the switching of operating modes. The validity and reliability of the method proposed are verified by simulation and experimental results.This work is supported by National High Technology Research and Development Program of China(863 Program)(No. 2012AA051201).

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