scholarly journals Logarithmic droop‐based decentralized control of parallel converters for accurate current sharing in islanded DC microgrid applications

2021 ◽  
Vol 15 (6) ◽  
pp. 1240-1254
Author(s):  
Monica P. ◽  
Kowsalya M. ◽  
Josep M. Guerrero
Keyword(s):  
Decentralized Control ◽  
Dc Microgrid ◽  
Current Sharing ◽  
Parallel Converters

scholarly journals The Hierarchical Control Algorithm for DC Microgrid Based on the Improved Droop Control of Fuzzy Logic

Energies ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2995 ◽  
Author(s):  
Liang Zhang ◽  
Kang Chen ◽  
Shengbin Chi ◽  
Ling Lyu ◽  
Guowei Cai
Keyword(s):  
Fuzzy Logic ◽  
Control Algorithm ◽  
Voltage Drop ◽  
Hierarchical Control ◽  
Voltage Regulation ◽  
Droop Control ◽  
Dc Microgrid ◽  
Current Sharing ◽  
The Difference ◽  
Bus Voltage

In the direct current (DC) microgrid composed of multiple distributed generations, due to the different distances between various converters and the DC bus in the system, the difference of the line resistance will reduce the current sharing accuracy of the system. The droop control was widely used in the operation control of the DC microgrid. It was necessary to select a large droop coefficient to improve the current sharing accuracy, but a too large droop coefficient will lead to a serious bus voltage drop and affect the power quality. In view of the contradiction between the voltage regulation and load current sharing in the traditional droop control, a hierarchical control algorithm based on the improved droop control of the fuzzy logic was proposed in this paper. By improving the droop curve, the problems of voltage regulation and current sharing were solved simultaneously. The effectiveness of the algorithm was verified by simulation.

Distributed Secondary Control for Current Sharing and Voltage Restoration in DC Microgrid

2020 ◽  
Vol 11 (3) ◽  
pp. 2487-2497 ◽  
Author(s):  
Lantao Xing ◽  
Yateendra Mishra ◽  
Fanghong Guo ◽  
Pengfeng Lin ◽  
Yang Yang ◽  
...  
Keyword(s):  
Secondary Control ◽  
Dc Microgrid ◽  
Current Sharing
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