Research and analysis of the improved inverse-droop control strategy for dual mode inverters in micro grid

2016 ◽  
Author(s):  
Chunxue Wen Chunxue Wen ◽  
Jiaoxin Jia Jiaoxin Jia
Keyword(s):  
Control Strategy ◽  
Droop Control ◽  
Dual Mode ◽  
Micro Grid

scholarly journals Droop control strategy of the AC/DC hybrid micro-grid based on quasi-PR control

2017 ◽  
Vol 2017 (14) ◽  
pp. 2634-2642 ◽  
Author(s):  
Dechang Yang ◽  
Zixiao Xu ◽  
Weilin Li ◽  
Fanbin Bu
Keyword(s):  
Control Strategy ◽  
Droop Control ◽  
Micro Grid ◽  
Grid Based

A Control Strategy with Series-Parallel Inverter for Micro-Grid Operation

2014 ◽  
Vol 1044-1045 ◽  
pp. 677-680
Author(s):  
Gui Ying Liu ◽  
Yong Guang Gui ◽  
Shi Ping Su ◽  
Qian Luo ◽  
Jiang Wu ◽  
...  
Keyword(s):  
Control Strategy ◽  
Control Method ◽  
Operation Mode ◽  
Droop Control ◽  
Three Phase ◽  
Islanding Operation ◽  
Integral Controller ◽  
Micro Grid ◽  
Grid Operation ◽  
Parallel Inverter

For the different operation mode of micro-grid, an improved droop control method and a parallel inverter was proposed depending on the study of micro-grid inverter. Grid-connected interface contains a series inverter and a parallel inverter, and can be switched to select different work mode. The parallel inverter can eliminate harmonic, compensate three-phase imbalanced current to improve the quality of the power delivered to the utility grid. In islanding operation mode, the improved droop control strategy was applied, where an integral controller was introduced. So it can reduce the inverter output voltage amplitude. Thereby it can restrain circulation and realize the power of self-distribution. The effectiveness and feasibility are verified by the simulation result.

Comprehensive Control Strategy and Simulation Research on Micro Grid

2014 ◽  
Vol 602-605 ◽  
pp. 2609-2614
Author(s):  
Yu Long Wang
Keyword(s):  
Control Strategy ◽  
Power Distribution ◽  
Hot Spot ◽  
Green Energy ◽  
Simulation Software ◽  
Regulation Mechanism ◽  
Droop Control ◽  
Simulation Research ◽  
Micro Grid ◽  
Grid Operation

Micro grid can integrate various distributed generators and provide local load with green energy. Therefore, it becomes a hot spot of research in every country all over the world. Due to small inertia, large number of models, big difference among internal electric sources of Micro grid operation, it is more difficult to keep stabilization of voltage frequency of common points in the network, and more complicated to control the problems. The article puts forward the improved droop control strategy based on distributed power supply layer, on the basis of traditional droop control, it increases the feed forward regulation mechanism so as to change the droop coefficient, increase the power regulation scope, speed up the common point frequency voltage stability and improve the control precision, which has realized the specific control of power output when the Micro grid synchronizes and closes, as well as the purpose of power distribution according to load demand for islanding. Finally, we use power system simulation software PSCAD/EMTDC V4.4 to verify the practicability of the proposed scheme.

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