Title :
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
fDate :
April 29 2012-May 2 2012
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;
Conference_Titel :
Electrical & Computer Engineering (CCECE), 2012 25th IEEE Canadian Conference on
Conference_Location :
Montreal, QC
Print_ISBN :
978-1-4673-1431-2
Electronic_ISBN :
0840-7789
DOI :
10.1109/CCECE.2012.6335006
