Modular multilevel inverter with maximum power point tracking for grid connected photovoltaic application

Author

Alajmi, B.N. ; Ahmed, K.H. ; Adam, G.P. ; Finney, S.J. ; Williams, B.W.

Author_Institution

Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK

fYear

2011

fDate

27-30 June 2011

Firstpage

2057

Lastpage

2062

Abstract

A single-phase modular multilevel inverter based photovoltaic system for grid connection is proposed. This photovoltaic system utilizes two conversion stages; a boost converter for tracking the maximum power point and a modular multilevel inverter used as an interfacing unit. The maximum power point tracking is achieved with a fuzzy logic controller, and the modular multilevel inverter regulates the dc link voltage and synchronizes the grid voltage and current in order to achieve unity power factor operation. The proposed system provides high dynamic performance and power quality injected into the grid. The validity of the proposed system is confirmed by simulations.

Keywords

fuzzy control; invertors; maximum power point trackers; photovoltaic power systems; power factor; power generation control; power grids; power supply quality; DC link voltage; boost converter; fuzzy logic controller; grid connected photovoltaic application; maximum power point tracking; photovoltaic system; power quality; single-phase modular multilevel inverter; unity power factor operation; Arrays; Capacitors; Inverters; Niobium; Power harmonic filters; Total harmonic distortion; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics (ISIE), 2011 IEEE International Symposium on

Conference_Location

Gdansk

ISSN

Pending

Print_ISBN

978-1-4244-9310-4

Electronic_ISBN

Pending

Type

conf

DOI

10.1109/ISIE.2011.5984477

Filename

5984477