Title :
Phase-shifted pulse-width-amplitude modulation for quasi-Z-source cascade multilevel inverter based PV power system
Author :
Yushan Liu ; Abu-Rub, Haitham ; Baoming Ge ; Fang Zheng Peng
Author_Institution :
Sch. of Electr. Eng., Beijing Jiaotong Univ., Beijing, China
Abstract :
A phase-shifted pulse-width-amplitude modulation (PS-PWAM) is proposed for quasi-Z-source cascade multilevel inverter (qZS-CMI) applied to photovoltaic (PV) power system. The detailed modulating principle is disclosed. A switching loss model is built to evaluate the qZS-CMI´s power dissipation when the PS-PWAM and the traditional phase-shifted SPWM (PS-SPWM) are respectively employed. The simulation and experimental results verify that the proposed PS-PWAM has a lower power loss and higher voltage utilization than the traditional PS-SPWM for the qZS-CMI.
Keywords :
PWM invertors; photovoltaic power systems; PS-PWAM; PV power system; modulating principle; phase-shifted pulse-width-amplitude modulation; photovoltaic power system; power loss; qZS-CMI power dissipation; quasi-z-source cascade multilevel inverter; voltage utilization; Bridge circuits; Insulated gate bipolar transistors; Inverters; Modulation; Switches; Switching loss; Voltage control; Phase-shifted pulse-width-amplitude modulation; photovoltaic power system; quasi-Z-source cascade multilevel inverter;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2013 IEEE
Conference_Location :
Denver, CO
DOI :
10.1109/ECCE.2013.6646686
