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Model Predictive Control of Energy-Stored Quasi-Z-Source Inverter Without Weighting Factor

  • Tian Lan*
  • , Yan Zhang
  • , Wanhong Zhang
  • *Corresponding author for this work
  • Qinghai University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

When the quasi-Z-source inverter with energy storage (ES-qZSI) by model predictive control (MPC), an appropriate weighting factor is designed in the cost function to achieve the best possible performance from the system. However, adding weighting factors directly to a cost function produces both numerical instability and computational complexity, in addition to the inability to distinguish between the role of weighting factors and system dynamics in the performance of the relevant system. This paper proposes an improved MPC algorithm without weighting factors for the ES-qZSI system. The computational cost of MPC is significantly reduced by the voltage vector control method without affecting the control performance. Moreover, the inductance current term in the control logic is considered individually, thus eliminating its weighting factor. Compared with conventional MPC, computational efficiency and control performance are demonstrated via numerical simulation. The simulation results show a good dynamic and static performance for the improved algorithm.

Original languageEnglish
Title of host publicationICIEA 2022 - Proceedings of the 17th IEEE Conference on Industrial Electronics and Applications
EditorsWenxiang Xie, Shibin Gao, Xiaoqiong He, Xing Zhu, Jingjing Huang, Weirong Chen, Lei Ma, Haiyan Shu, Wenping Cao, Lijun Jiang, Zeliang Shu
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages892-899
Number of pages8
ISBN (Electronic)9781665409841
DOIs
Publication statusPublished - 2022
Externally publishedYes
Event17th IEEE Conference on Industrial Electronics and Applications, ICIEA 2022 - Chengdu, China
Duration: 16 Dec 202219 Dec 2022

Publication series

NameICIEA 2022 - Proceedings of the 17th IEEE Conference on Industrial Electronics and Applications

Conference

Conference17th IEEE Conference on Industrial Electronics and Applications, ICIEA 2022
Country/TerritoryChina
CityChengdu
Period16/12/2219/12/22

Keywords

  • MPC
  • energy storage
  • quasi-Z-source inverter (qZSI)
  • weighting factor

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