Title :
Multilevel cascaded Z source inverter for PV power generation system
Author :
Fayyad, Yara ; Ben-Brahim, L.
Author_Institution :
Dept. of Electr. Eng., Qatar Univ., Doha, Qatar
Abstract :
The paper investigates the use of multilevel cascaded Z source inverter (MC-ZSI) for photovoltaic (PV) power generation system. The control of the proposed system will take into account the multilevel modulation scheme and the independent control of the shoot-through duty ratio of the connected Z source inverters (ZSI). In three phase three cells inverter, there exist nine independent shoot-through duty ratios to control nine ZSI modules. These shoot-through duty ratios will be combined in the conventional phase shift multilevel modulation scheme to form the final gating pulses for the MC-ZSI. For grid connection operation, deadbeat control is used due to its fast response and high accuracy. Simulation results verified the effectiveness and reliability of MC-ZSI.
Keywords :
invertors; photovoltaic power systems; power generation control; power grids; MC-ZSI; PV power generation system; deadbeat control; final gating pulses; grid connection operation; independent control; multilevel cascaded Z source inverter; phase shift multilevel modulation scheme; photovoltaic power generation system; shoot-through duty ratio; three phase three cells inverter; Bridge circuits; Inverters; Power generation; Pulse width modulation; Radiation effects; Topology; Z source inverter; multilevel cascaded inverter; phase shift modulation schemem deadbeat control;
Conference_Titel :
Renewable Energy Research and Applications (ICRERA), 2012 International Conference on
Conference_Location :
Nagasaki
Print_ISBN :
978-1-4673-2328-4
Electronic_ISBN :
978-1-4673-2329-1
DOI :
10.1109/ICRERA.2012.6477274
