Coordination Control of DC Microgrid with Two DC Buses

REN Chunguang; ZHAO Yaomin; HAN Xiaoqing; GUO Wenjiao

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Coordination Control of DC Microgrid with Two DC Buses

更新时间：2025-12-08

- Coordination Control of DC Microgrid with Two DC Buses
- Vol. 42, Issue 7, Pages: 2166-2173(2016)
- 作者机构：
  
  太原理工大学电力系统运行与控制山西省重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：31 July 2016，
  
  Published：2016
- 稿件说明：
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REN Chunguang, ZHAO Yaomin, HAN Xiaoqing, et al. Coordination Control of DC Microgrid with Two DC Buses[J]. 2016, 42(7): 2166-2173.
DOI：

REN Chunguang, ZHAO Yaomin, HAN Xiaoqing, et al. Coordination Control of DC Microgrid with Two DC Buses[J]. 2016, 42(7): 2166-2173. DOI：

摘要

为便于不同电压等级的直流负荷接入直流微电网

设计了基于双直流母线构架的直流微电网协调控制策略。双直流母线直流微电网由2电压等级不同的独立直流微电网通过双向DC/DC变换器连接构成。将锂电池超级电容组成的混合储能系统应用于直流子网中

并根据双向变换器两侧子网的电压–功率下垂特性

对两侧电压进行了归一化处理

提出了适用于连接2直流子网的双向DC/DC变换器下垂控制;最后

通过d SPACE验证了系统协调控制策略的可行性。实验结果表明

此控制策略可以根据2直流子网电压大小有效控制子网间的功率传输

实现了整个系统功率的平衡

提高整个系统的运行可靠性。

Abstract

In order to meet the demands of different DC voltage levels of DC loads

we put forward a coordination control strategy of DC microgrid with two DC buses. The proposed system contains two DC microgrids with different voltage levels

and the two microgrids are connected with a bidirectional converter which is used to keep balance of the power in both sides and improve the operational reliability of the entire system. Based on the droop characteristics of bidirectional converter

the droop control of Buck/Boost converter is proposed to achieve a power balance in the whole system. Besides

according to the high power density of super capacitor and the high energy density of battery

hybrid energy storage system（HESS） is adopted to optimize the system operation and prolong the service life of the battery. Finally

the availability of the control strategy is verified by d SPACE. The experimental results show that the power flow between the high and low voltage DC bus can be achieved through the control of the bidirectional converter

ensuring the stable operation of the system.

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