Fundamental-Frequency-Modulated Six-Level Diode-Clamped Multilevel Inverter for Three-Phase Stand-Alone Photovoltaic System

Author

Ozdemir, Engin ; Ozdemir, Sule ; Tolbert, Leon M.

Author_Institution

Fac. of Tech. Educ., Kocaeli Univ., Kocaeli, Turkey

Volume

56

Issue

11

fYear

2009

Firstpage

4407

Lastpage

4415

Abstract

This paper presents a fundamental-frequency-modulated diode-clamped multilevel inverter (DCMLI) scheme for a three-phase stand-alone photovoltaic (PV) system. The system consists of five series-connected PV modules, a six-level DCMLI generating fundamental-modulation staircase three-phase output voltages, and a three-phase induction motor as the load. In order to validate the proposed concept, simulation studies and experimental measurements using a small-scale laboratory prototype are also presented. The results show the feasibility of the fundamental frequency switching application in three-phase stand-alone PV power systems.

Keywords

induction motors; invertors; photovoltaic power systems; fundamental frequency switching application; fundamental-frequency-modulated diode-clamped multilevel inverter; fundamental-modulation staircase three-phase output voltages; simulation; small-scale laboratory prototype; three-phase induction motor; three-phase stand-alone photovoltaic system; Fundamental switching; harmonic elimination; multilevel inverter; photovoltaic (PV) system; photovoltaic system;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2008.928096

Filename

4559380