Simple digital current control strategy for single-phase grid-connected converters

Simple digital current control strategy for single-phase grid-connected converters

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
IET Power Electronics — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

This study proposes a simple digital current control technique for single-phase grid-connected voltage source converters. Unlike conventional strategies, the proposed method does not require any proportional-integral or proportional-resonant controller, fictitious phase generation, reference frame transformation and decoupling network; thus, it has the advantages of simplicity and reduced computational efforts. The suggested digital technique only uses a simple proportional controller in its structure and can be directly implemented on available digital signal processors. A digital controller parameter design procedure is proposed which ensures stability and near-zero steady-state error under all circumstances. Simulation and experimental results confirm that the proposed technique provides a fast and accurate current tracking with minimum harmonic distortions.


    1. 1)
    2. 2)
    3. 3)
    4. 4)
    5. 5)
    6. 6)
    7. 7)
    8. 8)
    9. 9)
    10. 10)
    11. 11)
    12. 12)
      • 12. Miranda, U.A., Rolim, L.G.B., Aredes, M.: ‘A DQ synchronous reference frame current control for single-phase converters’. Power Electronics Specialists Conf., Recife, June 2005, pp. 13771381.
    13. 13)
    14. 14)
    15. 15)
    16. 16)
    17. 17)
    18. 18)
      • 18. Gonzalez, M., Cárdenas, V., Pazos, F.: ‘DQ transformation development for single-phase systems to compensate harmonic distortion and reactive power’. Power Electronics Congress, October 2004, pp. 177182.
    19. 19)
      • 19. Saitou, M., Matsui, N., Shimizu, T.: ‘A control strategy of single-phase active filter using a novel d-q transformation’. Industry Applications Conf., October 2003, pp. 12221227.
    20. 20)
    21. 21)
      • 21. Ciobotaru, M., Teodorescu, R., Blaabjerg, F.: ‘A new single-phase PLL structure based on second order generalized integrator’. Thirty-seventh IEEE Power Electronics Specialists Conf., June 2006, pp. 16.
    22. 22)

Related content

This is a required field
Please enter a valid email address