Title :
An improved MPPT method for quasi-Z-source inverter based grid-connected photovoltaic power system
Author :
Liu, Yushan ; Abu-Rub, Haitham ; Ge, Baoming ; Peng, FangZheng ; De Almeida, Anibal T. ; Ferreira, Fernando J T E
Author_Institution :
Sch. of Electr. Eng., Beijing Jiaotong Univ., Beijing, China
Abstract :
The main objective for a grid-connected photovoltaic (PV) inverter is to feed the harvested energy from PV panels to the grid with high efficiency and high electrical power quality. In this paper, an improved maximum power point tracking method applied for a quasi-Z-source PV inverter is proposed to track the maximum power of the PV power system. Furthermore, the DC-link stable voltage control and AC-side power control of the entire system are designed. The simulated results illustrate the validity and correctness of the proposed approach, and an efficient method for PV power generation.
Keywords :
invertors; maximum power point trackers; photovoltaic power systems; power control; power generation control; power supply quality; voltage control; AC-side power control; DC-link stable voltage control; PV power generation; electrical power quality; grid-connected photovoltaic PV inverter; grid-connected photovoltaic inverter; grid-connected photovoltaic power system; improved MPPT method; maximum power point tracking method; quasi-Z-source PV inverter; Inductors; Inverters; Photovoltaic systems; Voltage control; maximum power point tracking; photovoltaic power; quasi-Z-source inverter;
Conference_Titel :
Industrial Electronics (ISIE), 2012 IEEE International Symposium on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4673-0159-6
Electronic_ISBN :
2163-5137
DOI :
10.1109/ISIE.2012.6237356
