A sensorless Kalman filter-based active damping technique for grid-tied VSI with LCL filter

Hisham Eldeeb*, Ahmed Massoud, Ayman S. Abdel-Khalik, Shehab Ahmed

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


Employing the LCL passive filter in inverter-based distributed generation to ensure high quality power delivery comes at the expense of poor performance due to the resonance phenomenon. Literature elucidated several active approaches to mitigate this phenomenon. This paper proposes a sensorless active damping technique that is able to restrain the resonant current component through the estimation of the filter capacitor current using the Kalman filter. The Kalman filter is able to improve the quality of the estimated variables in noisy environments accompanied with measurements and model uncertainties. The effect of LCL filter parameter mismatch on the performance of the Kalman filter is assessed. Stability and convergence analyses are also conducted. An effective tuning method for the grid current controller employing a proportional-resonant controller is adopted. Experimental evaluations were conducted to validate the proposed control strategy.

Original languageEnglish (US)
Pages (from-to)146-155
Number of pages10
JournalInternational Journal of Electrical Power and Energy Systems
StatePublished - Dec 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Ltd


  • Active damping
  • Grid-connected inverters
  • Kalman filter
  • LCL filter
  • Power quality
  • Proportional resonant controller

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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