Modeling and Analysis of Modular Multilevel Converter in DC Voltage Control Timescale

2019 ◽  
Vol 66 (8) ◽  
pp. 6449-6459 ◽  
Author(s):  
Jiabing Hu ◽  
Jianhang Zhu ◽  
Min Wan
2020 ◽  
Vol 2020 (7) ◽  
pp. 268-274
Author(s):  
Dongsheng Lu ◽  
Zhenquan Wang ◽  
Yue Lou ◽  
Xueying Guo ◽  
Liu Zong ◽  
...  

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1056
Author(s):  
Nian Mei ◽  
Shiyuan Yin ◽  
Yue Wang ◽  
Zhuling Li ◽  
Pengkun Li ◽  
...  

The stability of Modular multilevel converter (MMC) itself is the premise of analyzing the stability of MMC cascading with other cells, so this paper addressed the small-signal stability of MMC with dc voltage control mode which is the common operation mode of grid-side MMC in high-voltage direct current (HVDC) systems. First, the small signal model of MMC with open-loop control mode and dc voltage control mode while considering the dc voltage controller and current controller are established with the harmonic state-space (HSS) modeling method. Subsequently, eigenvalues and participation factors are analyzed to estimate the stability of MMC system and the influence of controller parameters, especially the proportional coefficients of dual-loop controllers, which can improve the design efficiency of control system. Finally, time-domain simulations in MATLAB/Simulink are provided to verify the accuracy of HSS small signal model and the effectiveness of the theoretical stability analysis.


2019 ◽  
Vol 2019 (18) ◽  
pp. 5255-5259 ◽  
Author(s):  
Xin Huang ◽  
Keyou Wang ◽  
Chen Qi ◽  
Guojie Li ◽  
Zheng Zhu

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