Abstract
An adaptive phase-locked loop (PLL) structure is proposed which offers fast and smooth tracking of phase-angle jumps. Correlatively, it offers soft startup stage and avoids undesired frequency swings caused by phase jumps. The adaptive mechanism adjusts the gain of frequency estimation loop in order to mitigate large transients of frequency during sudden phase angle variations. This reduces the coupling of phase and frequency variables and allows tremendously faster and smoother estimation of both variables. The proposed adaptive mechanism can be applied to different PLL and adaptive notch-filter systems three of which including the enhanced PLL (EPLL), the synchronous reference frame PLL (SRF-PLL), and the second order generalized integrator frequency-locked loop (SOGI-FLL) are studied in this paper.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
