Three-Level Neutral Point Clamped Inverter Fed By A Photovoltaic System Under Partial Shading

Abinadabe S. Andrade; Edison R. C. da Silva

doi:10.18618/REP.2016.4.2637

Authors

Abinadabe S. Andrade Federal University of Campina Grande/COPELE/LEIAM, Campina Grande – Paraíba, Brazil
Edison R. C. da Silva Federal University of Campina Grande/COPELE/LEIAM, Campina Grande – Paraíba, Brazil

DOI:

https://doi.org/10.18618/REP.2016.4.2637

Keywords:

NPC Inverter, Partial Shading, Photovoltaic System, Unbalanced DC-link

Abstract

This paper deals with a system composed of a three-level Neutral-Point- Clamped inverter fed by photovoltaic panels. The system is able to operate adequately even under partial shading operation by controlling the dc-link neutral point injected current. System model, pulse width modulation strategy, maximum power point tracking, and control logic for balancing the dc-link capacitors voltages are presented. Analysis of harmonic distortion, thermal stress, limits of control and power losses are included. Experimental results validate the proposed system.

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Author Biographies

Abinadabe S. Andrade, Federal University of Campina Grande/COPELE/LEIAM, Campina Grande – Paraíba, Brazil

was born in Caicó/RN, Brazil, in 1985. He received the B. S. degree in electrical engineering and the M.S. degree from the Federal University of Campina Grande, Brazil, in electrical engineering, in 2010 and 2012, respectively. Currently, he is with the Federal Institute of Paraiba, campus of Cajazeiras, and is also working toward the Ph.D. degree in electrical engineering at the Federal University of Campina Grande. His areas of interest are: photovoltaic systems, power electronics converters.

Edison R. C. da Silva, Federal University of Campina Grande/COPELE/LEIAM, Campina Grande – Paraíba, Brazil

received the B.S.E.E. degree from the Polytechnic School of Pernambuco, Recife, Brazil, in 1965, the M.S.E.E. degree from the University of Rio de Janeiro, Brazil, in 1968, and the Dr. Eng. degree from the University Paul Sabatier, Toulouse, France, in 1972. He was Director of the Research Laboratory on Industrial Electronics and Machine Drives at the Federal University of Paraiba, Brazil, UFCG, for 30 years. He is currently Visiting Professor at the Electrical Engineering Department, Federal University of Paraiba, and Professor Emeritus at the UFCG. He was President of the Brazilian Society on Automatic Control, SBA. His current research work is in the area of power electronics and motor drives. He is a member of the SOBRAEP, SBA and four IEEE Societies.

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