Model Predictive Control for the Reduction of DC-link Current Ripple in Two-level Three-phase Voltage Source Inverters

In the applications of three-phase two-level voltage source inverters (VSIs) relatively large energy storage capacitors are used to absorb the high DC-link current ripples mainly caused by the circulating reactive power, the switched AC phase current flowing to the DC-link, and other dynamic and/or...

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Published in:2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe) pp. 1 - P.9
Main Authors: Xu, Junzhong, Gao, Fei, Soeiro, Thiago Batista, Chen, Linglin, Tarisciotti, Luca, Tang, Houjun, Bauer, Pavol
Format: Conference Proceeding
Language:English
Published: EPE Association 01.09.2020
Subjects:
Capacitors
Cost function
Inverters
Modulation strategy
MPC (Model-based Predictive Control)
Predictive control
Pulse width modulation
Pulse Width Modulation (PWM)
Switches
Voltage control
Voltage Source Converter (VSC)
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Abstract In the applications of three-phase two-level voltage source inverters (VSIs) relatively large energy storage capacitors are used to absorb the high DC-link current ripples mainly caused by the circulating reactive power, the switched AC phase current flowing to the DC-link, and other dynamic and/or asymmetric operating conditions. Especially for electrolytic capacitor technology the typically high current stress and consequent losses is known to limit the power electronics lifetime, thus the design and selection of this component is critical for the whole system. To alleviate this problem, a new model predictive control (MPC) cost function which enables DC-link capacitor current ripple reduction is proposed in this paper. Based on the DC-link current mathematical model and the available VSI switching states, the future DC current ripple can be predicted, and then the optimized space vectors that best tracks the sinusoidal output current and minimizes the DC-link current ripple are chosen. Compared with conventional DC-link capacitor current reduction methods, the proposed approach has the advantage to incorporate an outstanding fast current control dynamics as well as being of relatively simple implementation because there is no need to adjust the switching signals or space vectors in the modulation as function of operational conditions of the system. Simulation and experimental results are presented verifying the effectiveness of the proposed MPC method.
AbstractList In the applications of three-phase two-level voltage source inverters (VSIs) relatively large energy storage capacitors are used to absorb the high DC-link current ripples mainly caused by the circulating reactive power, the switched AC phase current flowing to the DC-link, and other dynamic and/or asymmetric operating conditions. Especially for electrolytic capacitor technology the typically high current stress and consequent losses is known to limit the power electronics lifetime, thus the design and selection of this component is critical for the whole system. To alleviate this problem, a new model predictive control (MPC) cost function which enables DC-link capacitor current ripple reduction is proposed in this paper. Based on the DC-link current mathematical model and the available VSI switching states, the future DC current ripple can be predicted, and then the optimized space vectors that best tracks the sinusoidal output current and minimizes the DC-link current ripple are chosen. Compared with conventional DC-link capacitor current reduction methods, the proposed approach has the advantage to incorporate an outstanding fast current control dynamics as well as being of relatively simple implementation because there is no need to adjust the switching signals or space vectors in the modulation as function of operational conditions of the system. Simulation and experimental results are presented verifying the effectiveness of the proposed MPC method.
Author Soeiro, Thiago Batista
Tarisciotti, Luca
Gao, Fei
Chen, Linglin
Bauer, Pavol
Xu, Junzhong
Tang, Houjun
Author_xml – sequence: 1
  givenname: Junzhong
  surname: Xu
  fullname: Xu, Junzhong
  organization: Key Laboratory of Control of Power Transmission and conversion, Shanghai Jiao Tong University, Ministry of Education,China
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  givenname: Fei
  surname: Gao
  fullname: Gao, Fei
  organization: Key Laboratory of Control of Power Transmission and conversion, Shanghai Jiao Tong University, Ministry of Education,China
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  givenname: Thiago Batista
  surname: Soeiro
  fullname: Soeiro, Thiago Batista
  organization: DCE&S group, Delft University of Technology,Delft,The Netherlands
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  givenname: Linglin
  surname: Chen
  fullname: Chen, Linglin
  organization: Huawei Technologies Co., Ltd,Shenzhen,China
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  givenname: Luca
  surname: Tarisciotti
  fullname: Tarisciotti, Luca
  organization: Universidad Andres Bello,Department of Engineering,Santiago,Chile
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  givenname: Houjun
  surname: Tang
  fullname: Tang, Houjun
  organization: Key Laboratory of Control of Power Transmission and conversion, Shanghai Jiao Tong University, Ministry of Education,China
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  givenname: Pavol
  surname: Bauer
  fullname: Bauer, Pavol
  organization: DCE&S group, Delft University of Technology,Delft,The Netherlands
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Snippet In the applications of three-phase two-level voltage source inverters (VSIs) relatively large energy storage capacitors are used to absorb the high DC-link...
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SubjectTerms Capacitors
Cost function
Inverters
Modulation strategy
MPC (Model-based Predictive Control)
Predictive control
Pulse width modulation
Pulse Width Modulation (PWM)
Switches
Voltage control
Voltage Source Converter (VSC)
Title Model Predictive Control for the Reduction of DC-link Current Ripple in Two-level Three-phase Voltage Source Inverters
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