A Comparative Study of Grid Synchronization Techniques SRF-PLL and DSRF-PLL Under Unbalanced Grid Voltage Condition

  • Atul KunparaEmail author
  • Vithal N. Kamat
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 608)


This paper presents a comparative study of two grid synchronization techniques, synchronous reference frame phase-locked loop (SRF-PLL) and double synchronous reference frame phase-locked loop (DSRF-PLL) that could be used in grid integration of distributed generation systems. As PLL is playing a vital role in the operation of grid-connected power electronic converters, it is very much important to study their behavior in grid voltage fluctuating condition. It is shown that SRF-PLL gives suitable response when the grid voltage is balanced, but during fluctuating condition of voltage its performance gets deteriorated. But DSRF-PLL is able to track grid voltage phase properly in both conditions as it is having two components separated and decoupled from each other using decoupling network. Performance comparison is verified by MATLAB simulation, and the results are presented.


Phase-locked loop Grid synchronization Grid-connected converter 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Gujarat Technological UniversityAhmedabadIndia
  2. 2.Baroda Electric Meters Ltd.AnandIndia

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