Energy balancing in the modular multilevel converter under unbalanced grid conditions

2017 ◽  
Author(s):  
Markus Schroeder ◽  
Florian Mahr ◽  
Johann Jaeger ◽  
Stefan Haensel
Keyword(s):  
Modular Multilevel Converter ◽  
Energy Balancing ◽  
Multilevel Converter ◽  
Unbalanced Grid

Research on the Control Method of STATCOM Based on MMC

2013 ◽  
Vol 448-453 ◽  
pp. 2167-2170
Author(s):  
Kai Li ◽  
Yi Hui Zheng ◽  
Xin Wang ◽  
Li Xue Li ◽  
Gang Yao ◽  
...  
Keyword(s):  
Closed Loop ◽  
Reactive Power ◽  
Control Method ◽  
Modular Multilevel Converter ◽  
Energy Balancing ◽  
Multilevel Converter ◽  
Voltage Fluctuation ◽  
Loop Control ◽  
Voltage Balancing ◽  
High Voltage Direct Current

To realize the STATCOM based on Modular Multilevel Converter (MMC), a simplified double-closed loop structure, simplifying from the control method of High Voltage Direct Current (HVDC) based on MMC, is presented. Considering MMCs DC side using capacitors, a part-controlling method based on energy balancing is proposed, to solve the voltage balancing problem. With the part-controlling fixing the changing capacitors voltage and the simplified double-closed loop control method, voltage fluctuation could be reduced, and the loads reactive power could be compensated. The correctness and the effectiveness of the MMC-STATCOM controlling scheme is verified by Matlab/Simulink.

scholarly journals Energy balancing in modular multilevel converter systems

2017 ◽  
Vol 65 (5) ◽  
pp. 685-694
Author(s):  
P. Blaszczyk ◽  
K. Koska ◽  
P. Klimczak
Keyword(s):  
Control System ◽  
High Voltage ◽  
High Power ◽  
Power Converter ◽  
Modular Multilevel Converter ◽  
Energy Balancing ◽  
Multilevel Converter ◽  
Test Setup ◽  
Clear View ◽  
Hierarchical Levels

Abstract The modular multilevel converter (MMC) is a well-known solution for medium and high voltage high power converter systems. This paper deals with energy balancing of MMCs. The analysis includes multi-converter systems. In order to provide clear view, the MMC control system is divided into hierarchical levels. Details of control and balancing methods are discussed for each level separately. Finally, experimental results, based on multi-converter test setup, are presented.

scholarly journals Steady-State Modeling of Modular Multilevel Converter Under Unbalanced Grid Conditions

2017 ◽  
Vol 32 (9) ◽  
pp. 7306-7324 ◽  
Author(s):  
Xiaojie Shi ◽  
Zhiqiang Wang ◽  
Bo Liu ◽  
Yalong Li ◽  
Leon M. Tolbert ◽  
...  
Keyword(s):  
Steady State ◽  
Modular Multilevel Converter ◽  
Multilevel Converter ◽  
Unbalanced Grid
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