Enhanced Load Power Sharing Accuracy in Droop-Controlled DC Microgrids with Both Mesh and Radial Configurations

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ID: 77375
2015
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Abstract
The rational power sharing among different interface converters should be determined by the converter capacity. In order to guarantee that each converter operates at the ideal condition, considering the radial and mesh configuration, a modified strategy for load power sharing accuracy enhancement in droop-controlled DC microgrid is proposed in this paper. Two compensating terms which include averaging output power control and averaging DC voltage control of neighboring converters are employed. Since only the information of the neighboring converter is used, the complexity of the communication network can be reduced. The rational distribution of load power for different line resistance conditions is realized by using modified droop control that can be regarded as a distributed approach. Low bandwidth communication is used for exchanging sampled information between different converters. The feasibility and effectiveness of the proposed method for different network configurations and line resistances under different communication delay is analyzed in detail. Simulation results derived from a DC microgrid with three converters is implemented in MATLAB/Simulink to verify the proposed approach. Experimental results from a 3 × 10 kW prototype also show the performance of the proposed modified droop control scheme.
Reference Key
liu2015enhancedenergies Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Liu, Yiqi;Wang, Jianze;Li, Ningning;Fu, Yu;Ji, Yanchao;
Journal energies
Year 2015
DOI
DOI not found
URL
http://www.mdpi.com/1996-1073/8/5/3591
Keywords
Engineering (General). Civil engineering (General) Information technology Technology Computer applications to medicine. Medical informatics Science (General) applied optics. photonics electronic computers. computer science colonies and colonization. emigration and immigration. international migration

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