Application of an integrated transformerless buck-boost converter in photovoltaic MPPT systems

Author

Xiaobin He ; Xinghao Zhang ; Huiying Liu ; Huahui Zhang

Author_Institution

Shanghai Inst. of Space Power-Sources, Shanghai, China

fYear

2015

Firstpage

692

Lastpage

695

Abstract

A new photovoltaic MPPT system has been developed using an integrated transformerless Buck-Boost power converter to improve the efficiency. The paper describes the analysis, modeling and control of the Buck-boost power inverter. The transformerless Buck-boost power inverter includes a superboost converter and a buck converter though a variable mode controller to optimize the PV energy extraction. Finally, experiment research is proceeded to the MPPT system with battery chargers and DC load. Experiment results show that output power increases obviously under different solar radiation.

Keywords

invertors; maximum power point trackers; photovoltaic power systems; variable structure systems; PV energy extraction; battery chargers; buck-boost power inverter; integrated transformerless buck-boost power converter; photovoltaic MPPT systems; solar radiation; superboost converter; variable mode controller; Arrays; Energy exchange; Maximum power point trackers; Regulators; Stability analysis; Topology; Voltage control; Buck-Boost Regulator; Maximum Power Point Tracking (MPPT); high Energy Transfer efficiency;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems (PEDS), 2015 IEEE 11th International Conference on

Conference_Location

Sydney, NSW

Type

conf

DOI

10.1109/PEDS.2015.7203532

Filename

7203532