Power quality enrichment using an adaptive grid interfacing inverter control scheme in photovoltaic application

A. K. Rao Dadinaboina1,2, P. Kantha Rao2, C. Sasi1, R. Ramesh3, P. Narendra Babu4
1Department of Electrical Engineering, Annamalai University, Chidambaram, India
2SRKR Engineering College, Bhimavaram, India
3Jyothishmathi Institute of Technological Sciences, Karimnagar, India
4School of Electrical and Electronics Engineering, VIT Bhopal University, Bhopal, India

Tóm tắt

This article proposes a grid-following inverter control scheme using an interconnected generalized integrator and fuzzy PID dc-bus voltage controller (FPID-IGI) in photovoltaic (PV) applications. The proposed FPID-IGI controller is designed to extract the maximum power from the PV system to the local loads with a unity power factor (UPF) with power quality improvement. The proposed FPID-IGI controller is working based on the fundamental components (FC) separation from the load and grid characteristics. The proposed control scheme is considered for dc offset minimization, grid-synchronization and power quality enhancement in grid-tied PV systems. The proposed FPID-IGI controller is implemented under several grid and load perturbation conditions on the matlab/simulink software. The achieved results are found satisfactory under several grid and load perturbation conditions. The comparative analysis is included in the paper to show the proposed control’s scheme strength in terms of mitigation of dc-offset and harmonics, FC separation, etc. Finally, the harmonic content in grid voltages and currents are found satisfactory and are in the IEEE-519 and IEC standard limits.

Tài liệu tham khảo

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