An EAFOGI-FLL Based Adaptive Control for Seamless Operation of a Solar Photovoltaic System

This paper presents an enhanced adaptive fourth order generalized integrator with frequency locked loop (EAFOGI-FLL) based control that improves the power quality of a solar photovoltaic system (SPVS) in grid-connected mode (GCM) and standalone mode (SAM), ensures seamless operation, makes the grid...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2022, p.1-6
Main Authors: Chakraborty, Subhadip, Modi, Gaurav, Singh, Bhim
Format: Article
Language:English
Subjects:
Adaptive Control
Adaptive Filter
Adaptive filters
Converters
DC Offset Rejection
DC-Link Control
DSTATCOM
EAFOGI-FLL
Islanded Mode
Microgrid
Nonlinear Load
Power conversion
Power harmonic filters
Power Quality
Reactive power
Seamless Operation
SPVS
Synchronization
Voltage control
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Summary:This paper presents an enhanced adaptive fourth order generalized integrator with frequency locked loop (EAFOGI-FLL) based control that improves the power quality of a solar photovoltaic system (SPVS) in grid-connected mode (GCM) and standalone mode (SAM), ensures seamless operation, makes the grid currents sinusoidal and, also eliminates DC offset. It ensures unity power factor (UPF) operation of the grid to minimize line losses. The control maintains the point of common coupling (PCC) voltages sinusoidal in GCM and SAM even in the presence of nonlinear loads. The FLL enables effective frequency tracking with grid frequency variations and makes the system adaptive. The SPVS is run in maximum power point tracking (MPPT) mode in GCM and, with an improved control in SAM to ensure power balance. The system is analyzed using a developed simulink model in different conditions.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2022.3191210