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YANG Haizhu,YUE Gangwei,FAN Shuhao.Research on Adaptive Dynamic Droop Control Strategy for DC Microgrid[J].JOURNAL OF POWER SUPPLY,2019,17(2):101-108
Research on Adaptive Dynamic Droop Control Strategy for DC Microgrid
Received:June 01, 2017  Revised:January 06, 2019
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DOI:10.13234/j.issn.2095-2805.2019.2.101
Keywords:DC microgrid  droop control  adaptive dynamic regulation  voltage stability  dynamic performance
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YANG Haizhu School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo , China
YUE Gangwei School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo , China 582215709@qq.com
FAN Shuhao School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo , China
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Abstract:
      Due to the access to distributed energy, DC microgrids are random and unstable. To balance load fluctuations, the traditional DC microgrids often adopt the droop control strategy. This will cause a certain range of voltage offset, which not only affects the system adjustment range but also has an adverse impact on the access of load. In addition, the traditional droop control coefficient is constant:if this coefficient is large, then the voltage will be far from the reference value; otherwise, the dynamic performance will be poor. In view of the above problems, an adaptive dynamic droop control strategy for DC microgrid is proposed in this paper, which not only has good dynamic performance but also achieves system voltage without static error. Simulations and experiments were conducted under the proposed control strategy, and results show that this strategy can effectively achieve the stable operation of DC microgrid.
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