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WANG Peng,LI Shan,GUO Qiang,CHEN Min,SONG Lifeng,LI Xiao.Dual Closed-loop Control Strategy and Parameter Design for Three-phase VIENNA Rectifier[J].JOURNAL OF POWER SUPPLY,2018,16(5):16-24
Dual Closed-loop Control Strategy and Parameter Design for Three-phase VIENNA Rectifier
Received:June 29, 2016  Revised:March 21, 2018
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DOI:10.13234/j.issn.2095-2805.2018.5.16
Keywords:VIENNA rectifier  feed-forward decoupling  dual closed-loop control  zero  loop gain
Fund Project:Chongqing Engineering Research Center of Energy Internet
                 
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WANG Peng School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing , China;Chongqing Engineering Research Center of Energy Internet, Chongqing , China
LI Shan School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing , China;Chongqing Engineering Research Center of Energy Internet, Chongqing , China lishan@cqut.edu.cn
GUO Qiang School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing , China;Chongqing Engineering Research Center of Energy Internet, Chongqing , China
CHEN Min School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing , China;Chongqing Engineering Research Center of Energy Internet, Chongqing , China
SONG Lifeng School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing , China;Chongqing Engineering Research Center of Energy Internet, Chongqing , China
LI Xiao School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing , China;Chongqing Engineering Research Center of Energy Internet, Chongqing , China
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Abstract:
      Through the analysis of the fundamental principle for a VIENNA rectifier, a mathematical model in d-q reference frame is proposed. Due to system characteristics, such as strong coupling and nonlinearity, the decoupling control of d-q frame is realized by means of the feed-forward decoupling control strategy. On one hand, inner current loop is analyzed based on the frequency-domain method, and the zero position and loop gain of inner current loop controller is reasonably configured with the single input-single output(SISO) design tool in MATLAB, thus realizing the co-ntrol of rapidity and stability for grid current. On the other hand, in consideration of the effect of load current disturbance on outer voltage loop, the system robustness is improved by configuring the zero position and loop gain of outer loop controller. In addition, under the condition of load current disturbance, the factors that influence the stability of outer voltage controller are analyzed especially. Finally, a simulation platform was constructed using MATLAB/Simulink, and results demonstrated the correctness and reasonability of parameter design for inner current loop controller and outer voltage loop controller. In this way, the dual closed-loop control system for the VIENNA rectifier can realize excellent stability and dynamic performance, and maintain a satisfying control effect in a wide range of load.
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