Open AccessPower quality improvement of single phase weak grid interfaced hybrid solar PV and wind system using double fundamental signal extracter‐based control
Author(s) -
Gupta Tripurari Nath,
Murshid Shadab,
Singh Bhim
Publication year - 2019
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2018.6647
Subject(s) - photovoltaic system , total harmonic distortion , maximum power point tracking , grid connected photovoltaic power system , wind power , control theory (sociology) , electronic engineering , grid , renewable energy , integrator , engineering , computer science , electrical engineering , voltage , inverter , control (management) , geometry , mathematics , artificial intelligence
In this study, a double fundamental signal extracter using third‐order signal integrator‐based control technique is used for the improvement of power quality of single phase grid interfaced with hybrid wind energy generation system (WEGS) and solar photovoltaic (PV) array under weak grid conditions. The control algorithm is proposed for the extraction of dual fundamental components of load current and to extract fundamental grid voltage for synchronisation to the grid. The main objective of the system is to establish secure, reliable and safe integration while mitigating several power quality issues such as total harmonic distortion (THD) of the grid current, DC current injection. The system operates in distribution static compensator mode in the absence of renewable energy sources and also, maintains the grid current THD as per the limit of the IEEE‐519 standard. For optimal power extraction from WEGS as well as the solar PV array, perturb and observe algorithm is used. The prototype developed in the laboratory is tested under different operating conditions such as variable wind speed, grid voltage sag/swell, variable solar insolation, and varying load conditions.