An analysis of the three-level neutral-point clamped (NPC) inverter with two independent DC sources

Author

Ghoddami, Hamidreza ; Yazdani, Amirnaser

Author_Institution

Univ. of Western Ontario, London, ON, Canada

fYear

2012

fDate

April 29 2012-May 2 2012

Firstpage

1

Lastpage

5

Abstract

In addition to its other merits, the three-level neutral-point clamped (NPC) inverter allows two dc sources, which may be an advantage in photovoltaic systems for enhanced maximum power-point tracking capability and higher energy yield. This paper takes a look at the impact of power mismatch between the two dc sources on the performance of the inverter. The paper develops a mathematical model for the calculation of the inverter mid-point current (and its harmonic components), for three different pulse-width modulation (PWM) strategies.

Keywords

PWM invertors; maximum power point trackers; photovoltaic power systems; NPC inverter; PWM strategies; independent DC sources; inverter mid-point current; mathematical model; maximum power-point tracking capability; photovoltaic systems; power mismatch; pulse-width modulation strategies; three-level neutral-point clamped inverter; Abstracts; Inverters; Pulse width modulation; Control; mathematical model; photovoltaic (PV); power electronics; three-level neutral-point clamped (NPC) inverter;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical & Computer Engineering (CCECE), 2012 25th IEEE Canadian Conference on

Conference_Location

Montreal, QC

ISSN

0840-7789

Print_ISBN

978-1-4673-1431-2

Electronic_ISBN

0840-7789

Type

conf

DOI

10.1109/CCECE.2012.6335006

Filename

6335006