Hierarchical Control With Voltage Balancing and Energy Management for Bipolar DC Microgrid

Sung-Hun Kim; Hyung-Jun Byun; Won-Sang JeongJunsin YiChung-Yuen Won

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Hierarchical Control With Voltage Balancing and Energy Management for Bipolar DC Microgrid

机译：Hierarchical Control With Voltage Balancing and Energy Management for Bipolar DC Microgrid

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Bipolar dc microgrid (MG) based on two voltage levels with three wires has higher reliability and flexibility than unipolar dc MG. However, the voltages of bipolar buses are coupled and the voltage of the PN bus affects the voltages of the bipolar buses in bipolar dc MG. In this article, a hierarchical control with voltage balancing and energy management based on the characteristics of bipolar dc MG is proposed. To perform distributed power sharing with coupled voltages, droop-based primary controls for three buses and the coupling relationships between three buses are analyzed. Furthermore, in secondary control, balancing and voltage restoration controls are proposed to compensate for voltage drops caused by the balanced and unbalanced loads. To design the proposed hierarchical control, the stability analysis is performed. Additionally, a tertiary control based on an artificial neural network is proposed for state-of-charge management of bipolar dc MG. Experimental results of the proposed hierarchical control are verified by a lab-scale bipolar dc MG and performance analysis is performed with experimental and ideal results.

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来源
《IEEE Transactions on Industrial Electronics》 |2023年第9期|9147-9157|共11页
作者
Sung-Hun Kim; Hyung-Jun Byun; Won-Sang JeongJunsin YiChung-Yuen Won;
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作者单位

Sungkyunkwan University;

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原文格式 PDF
正文语种英语
中图分类无线电电子学、电信技术;
关键词
Artificial neural network (ANN); bipolar dc microgrid (MG); droop control; hierarchical control; secondary control; voltage balancing; Voltage control; Energy management; Microgrids; Artificial neural networks; Equivalent circuits; Couplings; Wires;

Hierarchical Control With Voltage Balancing and Energy Management for Bipolar DC Microgrid

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