A Fast and Adaptive PLL For Single Phase Grid-Connected PV Systems

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Mehdi Ehsanian Mehdi Ehsanian; Ehsanian Mehdi

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: JOURNAL OF IRANIAN ASSOCIATION OF ELECTRICAL AND ELECTRONICS ENGINEERS Year:2022 | Volume:19 | Issue:1 Page(s): 191-200

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Information Journal Paper

Title

A Fast and Adaptive PLL For Single Phase Grid-Connected PV Systems

Author(s)

Ehsanian Mehdi Ehsanian" target="_blank">Mehdi Ehsanian Mehdi Ehsanian | Ehsanian Mehdi | Issue Writer Certificate

Keywords

Phase

frequency

amplitude

photovoltaic

phase jumps

PLL

grid voltage

SOGI

FLL

Abstract

Phase, frequency, and amplitude of grid voltage are important information in grid-connected photovoltaic systems. For proper and stable operation of a system, a fast and correct estimation of grid information under grid variations and disturbances is very crucial. In this paper, an adaptive Phase-locked loop (PLL) structure is proposed which tracks the Phase jumps of grid voltage fast and smoothly. If a jump occurs in grid voltage Phase transient state at the frequency estimation of frequency lock loop (FLL) will be almost zero. The settling times of the estimated Phase, frequency, and amplitude of the proposed PLL are also slightly low. The proposed PLL consists of the second-order generalized integrator (SOGI) and frequency locked loop (FLL). The whole system has been simulated in MATLAB/Simulink. The settling time of estimated frequency and amplitude for proposed PLL are 0.023 and 0.024 s, respectively.

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