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Year 2026
 
Issue 4 [08 - 2026], Year XXXV

Design and Parameter Tuning of PI Controllers for Voltage Source Inverters in a Synchronous Reference Frame of Three-Phase Grid-Connected Photovoltaic Systems

https://mij.hoimovietnam.vn/en/archives?article=26047

  • Affiliations:

    Dai Nam University,1 Xom Str., Phu Luong, Hanoi, Vietnam

  • *Corresponding:
    This email address is being protected from spambots. You need JavaScript enabled to view it.
  • Received: 6th-June-2026
  • Revised: 2nd-July-2026
  • Accepted: 10th-July-2026
  • Online: 20th-Aug-2026
Pages: 53 - 62
Views: 15
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Abstract:

This paper presents the modeling, design, and parameter tuning procedure of PI controllers for the current control loop and the voltage control loop of a three-phase Voltage Source Inverter (VSI) in a grid-connected photovoltaic (PV) system. The adopted control structure is the Synchronous Reference Frame ( ) control method due to its effectiveness and its capability to independently decouple reactive power ( ) and active power ( ) compared with other control strategies. The control approach employs the Park transformation to convert AC variables into DC quantities, thereby enabling the effective use of proportional–integral (PI) controllers. The design of PI controllers for the inner current loop and the outer voltage loop in dq control plays a crucial role in ensuring system stability. Therefore, in the controller design and parameter tuning process, the Pole Cancellation method is applied to the current control loop, while the Pole Placement method is employed for the voltage control loop. The effectiveness of the proposed design is validated through simulations conducted in Matlab/Simulink.

How to Cite
Ta, H.Viet Anh and Nguyen, T.Nhat 2026. Design and Parameter Tuning of PI Controllers for Voltage Source Inverters in a Synchronous Reference Frame of Three-Phase Grid-Connected Photovoltaic Systems (in Vietnamese). Mining Industry Journal. XXXV, 4 (Aug, 2026), 53-62. .
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