Research on Energy Coordination Control Strategy in DC Microgrid

Authors

Zibao Lu, College of Physics and Electronic Information, Anhui Normal University, Wuhu 241000, China;Anhui Provincial Engineering Laboratory on Information Fusion and Control of Intelligent Robot, Wuhu 241000, ChinaFollow
Hao Ding, College of Physics and Electronic Information, Anhui Normal University, Wuhu 241000, China
Fangyun Sun, College of Physics and Electronic Information, Anhui Normal University, Wuhu 241000, China
Ziqiong Ding, College of Physics and Electronic Information, Anhui Normal University, Wuhu 241000, China
Li Gong, College of Physics and Electronic Information, Anhui Normal University, Wuhu 241000, China
Rui Zheng, College of Physics and Electronic Information, Anhui Normal University, Wuhu 241000, China;Anhui Provincial Engineering Laboratory on Information Fusion and Control of Intelligent Robot, Wuhu 241000, China

Abstract

Aiming of the bus voltage stability and energy flow balance in DC microgrids,a switching control strategy based on the energy balance relationship of DC microgrid is proposed. The bus voltage balance of DC microgrid is transformed into energy balance, and DC microgrid is modeled as a linear switching system with five modes. A controller is designed for each mode to stabilize the bus voltage. To achieve the seamless and smooth switching between modes, on the basis of maintaining the stability of any switching, the corresponding mode switching rules are given based on the energy flow characteristics of microgrid.Theoretical analysis shows that the switching control strategy can effectively achieve bus voltage stability and energy balance. The results of simulation on both individual modes and mode switching show that the control strategy can control bus voltage fluctuations withinof the rated voltage and quickly return to the desired voltage in the case of power imbalance.

Recommended Citation

Lu, Zibao; Ding, Hao; Sun, Fangyun; Ding, Ziqiong; Gong, Li; and Zheng, Rui (2023) "Research on Energy Coordination Control Strategy in DC Microgrid," Journal of System Simulation: Vol. 35: Iss. 6, Article 8.
DOI: 10.16182/j.issn1004731x.joss.22-0160
Available at: https://dc-china-simulation.researchcommons.org/journal/vol35/iss6/8

First Page

1215

Revised Date

2022-03-22

DOI Link

http://dx.doi.org/10.16182/j.issn1004731x.joss.22-0160

Last Page

1225

CLC

TP391.9

Recommended Citation

Zibao Lu, Hao Ding, Fangyun Sun, Ziqiong Ding, Li Gong, Rui Zheng. Research on Energy Coordination Control Strategy in DC Microgrid[J]. Journal of System Simulation, 2023, 35(6): 1215-1225.

DOI

10.16182/j.issn1004731x.joss.22-0160