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

fYear

2012

fDate

28-31 May 2012

Firstpage

1754

Lastpage

1758

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics (ISIE), 2012 IEEE International Symposium on

Conference_Location

Hangzhou

ISSN

2163-5137

Print_ISBN

978-1-4673-0159-6

Electronic_ISBN

2163-5137

Type

conf

DOI

10.1109/ISIE.2012.6237356

Filename

6237356