Comparison and its simulation of centralized and distributed MPPT structure

Author

Zhou Jian-ping ; Cui Yi ; Zhu Jian-ping ; Zhao Yong-xi ; Zhang Wei-zhou

Author_Institution

Sch. of Autom. Eng., Shanghai Univ. of Electr. Power, Shanghai, China

fYear

2015

fDate

23-25 May 2015

Firstpage

5054

Lastpage

5057

Abstract

The models of PV arrays with centralized maximum power point tracking (MPPT) and distributed MPPT structures were set up and output characteristics of PV arrays were simulated under different light intensity. The maximum power output of PV arrays is reduced to 40W from 85W for centralized MPPT structure when simulating solar light intensity of one of PV arrays is adjusted to 800 W/m² from 1200 W/m². However, the power output of PV arrays is not obviously decreased with sunlight intensity changed from 1200 W/m² to 800 W/m² in the distributed MPPT structure. The results indicate that the power output of distributed MPPT is superior to that of centralized MPPT under shade situation. However, the response time of PV arrays with distributed MPPT is 0.08 second to reach a stable state, which is longer than response time (0.005 seconds) of centralized MPPT.

Keywords

maximum power point trackers; photovoltaic power systems; MPPT structure; PV arrays; maximum power point tracking; solar light intensity; Maximum power point trackers; Photovoltaic systems; Power systems; Solar energy; Temperature; Time factors; MPPT; PV; centralized; distributed;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference (CCDC), 2015 27th Chinese

Conference_Location

Qingdao

Print_ISBN

978-1-4799-7016-2

Type

conf

DOI

10.1109/CCDC.2015.7162829

Filename

7162829