Closed-Loop Precharge Control of Modular Multilevel Converters During Start-Up Processes

2015 ◽  
Vol 30 (2) ◽  
pp. 524-531 ◽  
Author(s):  
Binbin Li ◽  
Dandan Xu ◽  
Yi Zhang ◽  
Rongfeng Yang ◽  
Gaolin Wang ◽  
...  
Keyword(s):  
Closed Loop ◽  
Multilevel Converters ◽  
Start Up ◽  
Modular Multilevel Converters

Nonlinear control for modular multilevel converters with enhanced stability region and arbitrary closed loop dynamics

2021 ◽  
Vol 126 ◽  
pp. 106590
Author(s):  
Guacira Costa de Oliveira ◽  
Gilney Damm ◽  
Renato Machado Monaro ◽  
Luís F.N. Lourenço ◽  
Miguel Jimenez Carrizosa ◽  
...  
Keyword(s):  
Nonlinear Control ◽  
Stability Region ◽  
Closed Loop ◽  
Multilevel Converters ◽  
Loop Dynamics ◽  
Modular Multilevel Converters ◽  
Enhanced Stability

scholarly journals Study of start-up decoupling controller for modular multilevel converter

2021 ◽  
Vol 261 ◽  
pp. 01026
Author(s):  
Xinlin Zhang ◽  
Yanchi Zhang ◽  
Da Xie ◽  
Bowen Zhao
Keyword(s):  
Power Systems ◽  
Pulse Width Modulation ◽  
Control Method ◽  
Switching Function ◽  
Modular Multilevel Converter ◽  
Multilevel Converter ◽  
Simulation Experiments ◽  
Multilevel Converters ◽  
Start Up ◽  
Modular Multilevel Converters

Modular multilevel converters are widely used in power systems because of their significant advantages. In this paper, a dynamic mathematical model is established by analyzing the topology, operating principle and switching function of the modular multilevel converter, so as to construct an inner and outer loop decoupling controller in dq coordinates. The carrier phase-shift pulse-width modulation is selected to control the sub-module operation, and the uncontrolled pre-charging method is adopted to charge the sub-module. Finally, simulation experiments are carried out in MATLAB/Simulink, and the results show that the control method achieves smooth start-up of the modular multilevel converter.

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