Authors

Dazhong Ma, Zhiyang Cai, Rui Wang, Qiuye Sun, Peng Wang

Abstract

Although the control strategy regarding quasi‐Z‐source inverter (qZSI) has been widely studied, the dynamic response and steady‐state accuracy of the system with a non‐linear section should be further improved. Based on this, this study proposes an energy shaping control (ESC) method based on the port‐controlled Hamiltonian (PCH) model for qZSIs. Firstly, based on the average state‐space model, the PCH model of the qZSI system is first built, which is an indispensable preprocessing for the following controller design. Based on the proposed model, the ESC method combining the interconnect matrix with damping configuration is proposed to improve the dynamic response and steady‐state accuracy, which is verified through comparing with several existing linear and non‐linear control strategies in detail. Finally, simulation and experimental results verify the effectiveness of the proposed method.

Citation

  • Journal: IET Power Electronics
  • Year: 2020
  • Volume: 13
  • Issue: 16
  • Pages: 3601–3612
  • Publisher: Institution of Engineering and Technology (IET)
  • DOI: 10.1049/iet-pel.2020.0264

BibTeX

@article{Ma_2020,
  title={{Energy shaping controller design of three‐phase quasi‐Z‐source inverter for grid‐tie}},
  volume={13},
  ISSN={1755-4543},
  DOI={10.1049/iet-pel.2020.0264},
  number={16},
  journal={IET Power Electronics},
  publisher={Institution of Engineering and Technology (IET)},
  author={Ma, Dazhong and Cai, Zhiyang and Wang, Rui and Sun, Qiuye and Wang, Peng},
  year={2020},
  pages={3601--3612}
}

Download the bib file

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