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Controller parameters design of a fractional‐order LCL‐type grid‐connected inverter

Jiang, Yuanhuai ; Wang, Xiaogang

International journal of circuit theory and applications, 2024-02, Vol.52 (2), p.769-792 [Periódico revisado por pares]

Bognor Regis: Wiley Subscription Services, Inc

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  • Título:
    Controller parameters design of a fractional‐order LCL‐type grid‐connected inverter
  • Autor: Jiang, Yuanhuai ; Wang, Xiaogang
  • Assuntos: Capacitors ; Control systems design ; Controllers ; Design parameters ; Feedback ; fractional‐order ; grid‐connected inverter (GCI) ; Inductors ; Integers ; Inverters ; LCL filter ; parameter design ; PI controller ; PR controller ; Proportional integral ; Resonance
  • É parte de: International journal of circuit theory and applications, 2024-02, Vol.52 (2), p.769-792
  • Notas: Funding information
    Guangzhou Science and Technology Project (grant/award number: 202102010404).
  • Descrição: Summary The grid‐connected inverter (GCI) based on the fractional‐order LCL (FOLCL) filter can achieve good attenuation of resonant peak and simplify the control system design by omitting the capacitor current feedback as long as the orders of the inductor and capacitor are set appropriately. This paper investigates the parameter design methods of four types of controllers based on a single‐phase FOLCL‐type GCI without capacitor current feedback; the four controllers are the integer‐order proportional integral controller, fractional‐order proportional integral controller, integer‐order proportional resonance controller, and fractional‐order proportional resonance controller. Closed‐loop constraints based on steady‐state error, phase margin, and gain margin are given to design the specific parameters of each controller. The methods can accurately and quickly obtain the appropriate controller parameters to meet the system performance requirements without repeated trial and error. Simulations and hardware‐in‐the‐loop experiments verify the validity of the theoretical analyses. This paper proposes parameter design methods of four types of controllers for a fractional‐order LCL‐type grid‐connected inverter without capacitor current feedback, which simplify the design of the control system and can obtain the appropriate controllers' parameter values accurately and quickly to meet system requirements without repeated trial.
  • Editor: Bognor Regis: Wiley Subscription Services, Inc
  • Idioma: Inglês
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