Open AccessDual reference phase shifted pulse width modulation technique for a N ‐level inverter based grid connected solar photovoltaic system
Author(s) -
Kartick Jana Chandra,
Sujit Biswas K.,
Suparna KarChowdhury
Publication year - 2016
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
eISSN - 1752-1424
pISSN - 1752-1416
DOI - 10.1049/iet-rpg.2015.0393
Subject(s) - photovoltaic system , inverter , pulse width modulation , maximum power point tracking , grid connected photovoltaic power system , voltage , solar micro inverter , grid , control theory (sociology) , maximum power principle , grid tie inverter , power (physics) , transient (computer programming) , ac power , electronic engineering , computer science , engineering , electrical engineering , physics , mathematics , control (management) , geometry , artificial intelligence , quantum mechanics , operating system
This study presents a control algorithm of a grid tied solar photovoltaic (PV) system using a dual reference phase shifted pulse width modulation technique for a single‐phase cascaded N ‐level inverter. The grid tied inverter consists of several five‐level hybrid inverter modules which are connected to the solar PV panels having equal DC voltage magnitudes. The proposed control technique for the multilevel inverter generate the near‐sinusoidal current with near‐unity power factor to the grid and balance the capacitor voltages across the DC links. The voltage and frequency of the multilevel inverter can be adjusted using closed loop control, such that, the maximum power flow to the grid can be achieved even under varying grid voltage. The performance of the complete system has been verified under different transient states. Experimental results verify the effectiveness of the proposed technique.