Modified Second Order Adaptive Filter for Grid Synchronization and Reference Signal Generation

Banishree Misra, Byamakesh Nayak

Abstract


Grid synchronization is a very important phenomenon under distorted and polluted grid conditions. So design of the phase lock loop plays a very crucial role in the filtering performance during grid frequency variation and other transient conditions.  Thus different adaptive filters are gaining popularity on the basis of their disturbance rejection capability and ability to extract the fundamental component from the polluted signal under grid frequency variations. In this set of work the polluted system performance has been analyzed on the basis of three adaptive filters, one is the second order adaptive filter (SOAF) based PLL technique, second is on the basis of second order generalized integrator quadrature signal generator (SOG-QSGI)  based PLL technique and third being the proposed modified second order adaptive filter (modified-SOAF) based PLL technique. The performance of the proposed modified second order adaptive filter has been analyzed on the basis of different parameters like the total computation time of the adaptive filters, settling time of the extracted fundamental signal, dependency of the filter performance  on  frequency, gain value and damping factor.

Keywords


renewable energy

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References

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DOI (PDF): https://doi.org/10.20508/ijrer.v8i1.6879.g7318

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