A model predictive control method based on space vector modulation for MMC
ID:243
Submission ID:72 View Protection:ATTENDEE
Updated Time:2020-10-15 20:29:05 Hits:315
Oral Presentation
Abstract
In this paper, a new control method for modular multilevel converters(MMCs) is proposed. The inner-loop circulating current control is using a model predictive controller instead of a traditional PI controller. In this controlling method, the reference voltage vector is obtained firstly according to the load current, which is the primary controlling objective. Then, the equivalent number of submodules(SMs) that should be inserted in the next sampling period is determined based on the principle of minimum voltage deviation of submodules. Finally, the equivalent number is adjusted to suppress the circulating current. Switching states obtained by comparing the adjusted equivalent number with a carrier wave will be applied to the switching devices. The simulation results performed in MATLAB/Simulink software verify the effectiveness of the proposed method.
Keywords
circulating current suppression,model predictive control,modular multilevel converter,space vector modulation
Submission Author
Weifeng Zhang
China University of Mining and Technology
Guojun Tan
China University of Mining and Technology
Qiang Wang
China University of Mining and Technology
Xu Zhang
China University of Mining and Technology
Comment submit