Title :
A hybrid PWM strategy for Z-source neutral-point-clamped inverter
Author :
Muniz, J.H.G. ; da Silva, E.R.C. ; Dos Santos, E.C., Jr.
Author_Institution :
Eletrical Eng. Dept. (DEE), Fed. Univ. of Campina Grande (UFCG), Campina Grande, Brazil
Abstract :
This paper presents a hybrid PWM strategy for Z-source NPC converter. The technique combines the space-vector PWM with the ease of implementation of a triangular-comparision PWM. Such strategy reduces the effort of the algorithm calculation. The introduction of the distribution ratio in this technique, allows the development of a systematic approach for implementation of either conventional or any modified vector strategies, even including the shoot-through inherent of Z-source inverter. Also, the paper proposes a simple software algorithm to generate the hybrid modulation for the Z-source NPC inverter. Simulated and experimental results demonstrate the validity of the proposed method.
Keywords :
PWM invertors; Z-source neutral-point-clamped inverter; hybrid PWM strategy; hybrid modulation; software algorithm; Capacitors; Converters; Inverters; Pulse width modulation; Software algorithms; Switches;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2011 Twenty-Sixth Annual IEEE
Conference_Location :
Fort Worth, TX
Print_ISBN :
978-1-4244-8084-5
DOI :
10.1109/APEC.2011.5744635